External cost as an indicator for sustainable electricity generation system

This research applies the Impact Pathway Approach [1] for identifying the external cost for the fossil-fuel electricity production in Ukraine. Using the SimPact Computer Code and Willingness to Pay survey, it calculates the external costs of the morbidity and mortality of population due to the air p...

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Veröffentlicht in:Системні дослідження та інформаційні технології
Datum:2010
Hauptverfasser: Matsuki, Y., Brondzia, О., Maslukivska, O.
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Veröffentlicht: Навчально-науковий комплекс "Інститут прикладного системного аналізу" НТУУ "КПІ" МОН та НАН України 2010
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Zitieren:External cost as an indicator for sustainable electricity generation system / Y. Matsuki, О. Brondzia, O. Maslukivska // Систем. дослідж. та інформ. технології. — 2010. — №4. — С. 18-32. — Бібліогр.: 46 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
id nasplib_isofts_kiev_ua-123456789-50066
record_format dspace
spelling Matsuki, Y.
Brondzia, О.
Maslukivska, O.
2013-10-04T14:38:41Z
2013-10-04T14:38:41Z
2010
External cost as an indicator for sustainable electricity generation system / Y. Matsuki, О. Brondzia, O. Maslukivska // Систем. дослідж. та інформ. технології. — 2010. — №4. — С. 18-32. — Бібліогр.: 46 назв. — англ.
1681–6048
https://nasplib.isofts.kiev.ua/handle/123456789/50066
303.833.7:504.75.05
This research applies the Impact Pathway Approach [1] for identifying the external cost for the fossil-fuel electricity production in Ukraine. Using the SimPact Computer Code and Willingness to Pay survey, it calculates the external costs of the morbidity and mortality of population due to the air pollutants emitted from an electricity generation plant using as an example Triypilska Electric Power Generation Plant in Ukrainka town. Based on the research results there were made recommendations to include the external costs into the price of electricity in Ukraine generated from the fossil fuel combustion.
Застосовано підхід шляху впливу (Impact Pathway Approach) для визначення зовнішніх витрат виробництва електроенергії з викопних джерел в Україні. За допомогою комп’ютерної програми SimPact та методики опитування щодо бажання платити обраховано вартість зовнішніх витрат від впливу викидів теплоелектростанції на захворюваність та смертність населення на прикладі Трипільської ТЕС у м. Українка. На основі отриманих результатів було зроблено рекомендації щодо включення вартості зовнішніх ефектів до ціни електроенергії в Україні, отриманої за допомогою спалювання викопних енергоносіїв.
Использован подход пути влияния (Impact Pathway Approach) для определения внешних издержек производства электроэнергии из ископаемых энергоресурсов в Украине. При помощи компьютерной модели SimPact и методики опроса желания платить были исчислены внешние издержки от влияния выбросов теплоэлектростанции на заболеваемость и смертность населения на примере Трипильской ТЭС в г. Украинка. На основе полученных результатов были сделаны рекомендации о внесении стоимости внешних издержек в цену электроэнергии в Украине, полученную в результате сжигания ископаемых энергоносителей.
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Навчально-науковий комплекс "Інститут прикладного системного аналізу" НТУУ "КПІ" МОН та НАН України
Системні дослідження та інформаційні технології
Теоретичні та прикладні проблеми і методи системного аналізу
External cost as an indicator for sustainable electricity generation system
Зовнішні витрати від забруднення при виробництві електроенергії як індикатор стійких електрогенеруючих систем
Внешние издержки от загрязнения при производстве электроэнергии как индикатор устойчивых электрогенерирующих систем
Article
published earlier
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
title External cost as an indicator for sustainable electricity generation system
spellingShingle External cost as an indicator for sustainable electricity generation system
Matsuki, Y.
Brondzia, О.
Maslukivska, O.
Теоретичні та прикладні проблеми і методи системного аналізу
title_short External cost as an indicator for sustainable electricity generation system
title_full External cost as an indicator for sustainable electricity generation system
title_fullStr External cost as an indicator for sustainable electricity generation system
title_full_unstemmed External cost as an indicator for sustainable electricity generation system
title_sort external cost as an indicator for sustainable electricity generation system
author Matsuki, Y.
Brondzia, О.
Maslukivska, O.
author_facet Matsuki, Y.
Brondzia, О.
Maslukivska, O.
topic Теоретичні та прикладні проблеми і методи системного аналізу
topic_facet Теоретичні та прикладні проблеми і методи системного аналізу
publishDate 2010
language English
container_title Системні дослідження та інформаційні технології
publisher Навчально-науковий комплекс "Інститут прикладного системного аналізу" НТУУ "КПІ" МОН та НАН України
format Article
title_alt Зовнішні витрати від забруднення при виробництві електроенергії як індикатор стійких електрогенеруючих систем
Внешние издержки от загрязнения при производстве электроэнергии как индикатор устойчивых электрогенерирующих систем
description This research applies the Impact Pathway Approach [1] for identifying the external cost for the fossil-fuel electricity production in Ukraine. Using the SimPact Computer Code and Willingness to Pay survey, it calculates the external costs of the morbidity and mortality of population due to the air pollutants emitted from an electricity generation plant using as an example Triypilska Electric Power Generation Plant in Ukrainka town. Based on the research results there were made recommendations to include the external costs into the price of electricity in Ukraine generated from the fossil fuel combustion. Застосовано підхід шляху впливу (Impact Pathway Approach) для визначення зовнішніх витрат виробництва електроенергії з викопних джерел в Україні. За допомогою комп’ютерної програми SimPact та методики опитування щодо бажання платити обраховано вартість зовнішніх витрат від впливу викидів теплоелектростанції на захворюваність та смертність населення на прикладі Трипільської ТЕС у м. Українка. На основі отриманих результатів було зроблено рекомендації щодо включення вартості зовнішніх ефектів до ціни електроенергії в Україні, отриманої за допомогою спалювання викопних енергоносіїв. Использован подход пути влияния (Impact Pathway Approach) для определения внешних издержек производства электроэнергии из ископаемых энергоресурсов в Украине. При помощи компьютерной модели SimPact и методики опроса желания платить были исчислены внешние издержки от влияния выбросов теплоэлектростанции на заболеваемость и смертность населения на примере Трипильской ТЭС в г. Украинка. На основе полученных результатов были сделаны рекомендации о внесении стоимости внешних издержек в цену электроэнергии в Украине, полученную в результате сжигания ископаемых энергоносителей.
issn 1681–6048
url https://nasplib.isofts.kiev.ua/handle/123456789/50066
citation_txt External cost as an indicator for sustainable electricity generation system / Y. Matsuki, О. Brondzia, O. Maslukivska // Систем. дослідж. та інформ. технології. — 2010. — №4. — С. 18-32. — Бібліогр.: 46 назв. — англ.
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fulltext © Y. Matsuki, O. Brondzia, O. Maslukivska, 2010 18 ISSN 1681–6048 System Research & Information Technologies, 2010, № 4 UDC 303.833.7:504.75.05 EXTERNAL COST AS AN INDICATOR FOR SUSTAINABLE ELECTRICITY GENERATION SYSTEM Y. MATSUKI, O. BRONDZIA, O. MASLYUKIVSKA This research applies the Impact Pathway Approach [1] for identifying the external cost for the fossil-fuel electricity production in Ukraine. Using the SimPact Com- puter Code and Willingness to Pay survey, it calculates the external costs of the morbidity and mortality of population due to the air pollutants emitted from an elec- tricity generation plant using as an example Triypilska Electric Power Generation Plant in Ukrainka town. Based on the research results there were made recommen- dations to include the external costs into the price of electricity in Ukraine generated from the fossil fuel combustion. INTRODUCTION Ukraine is one of the countries where industries play the significant role in its economic developments. Among various industries, the energy sector takes an important role, to satisfy not only the demands for energy in Ukraine, but also the demands from the other European countries. However, when talking about energy production, nobody should ignore the fact that this activity is exactly the source of harmful emissions into the atmosphere. Considerable fraction of all the emissions is being generated during the process of fossil fuel combustion, especially of coal, at fossil-fuel electricity gen- eration stations. Today, the fossil-fuel electricity generation stations supply 45.2 percent of the total electricity in Ukraine [2], of which share is next to the nuclear power’s 46.2 percent. However, the facilities and the equipments of power sta- tions are in insufficient conditions. About 40 percent of the facilities/equipments need to be replaced because they were built in the 1950s, and their working peri- ods have already expired [3]. The National Inventory of anthropogenic emissions in Ukraine reports that the sector of energy production emits the largest amount of greenhouse gases among the other industrial sectors [4]. Also, at the same time, the process of en- ergy production leads to the emissions of total suspended particles (TSP), sulfur dioxide (SO2) and nitrogen oxides (NOx). Total suspended particles are the air pollutants which can be divided into two types by their aerodynamic diameters: PM10 (aerodynamic diameter is less than 10 µm) and PM2.5 (aerodynamic diameter is less than 2.5 µm). These parti- cles are especially harmful to the human health because particles can penetrate the human organism, such as respiratory system, owing to their small sizes. At the same time, they cause illnesses of cardio-vascular system, which can end with mortality cases, among people who live in the industrial centers near the power stations [5]. However, the same impacts are also observed in the energy production sec- tor of the United States and the EU countries [5–7]. These countries have already developed the methodology to assess the health impacts of air pollutions, and to External cost as indicator for sustainable electricity generation system … Системні дослідження та інформаційні технології, 2010, № 4 19 evaluate the monetary values of those health impacts (damage costs), including the method to assess the values of the deaths after years from the exposures to the pollutants [8–9]. The results of those studies in the US and in the EU show that the monetary values (damage costs) of the health impacts caused by the pollutions are significantly large [1, 8]. Considering the evaluated health impacts and the damage costs in the US and in the EU, it is assumed that the processes of the en- ergy production in Ukraine also cause the considerable size of the impacts and the damage costs, hence the external costs of human health. IDENTIFICATION OF THE PROCEDURE In order to identify the necessary procedure to assess the size of the health im- pacts and the external costs of human health in Ukraine, the following topics were investigated. 1. External cost assessment. The supply and utilization of energy impose risks and damages to a wide range of receptors, including human health, natural ecosystems, and the built environment. Such damages are not accounted for the costs in the decisions making on electricity generation; therefore, they are exter- nal costs [10]. The external costs of the electricity generation systems are the costs imposed on society and the environment that are not accounted for by the producers and consumers of energy, i.e. that is not included in the market price [8]. Traditional economic assessment of electricity generation systems has tended to ignore these costs. 2. Development of the methods. Since the early 1990s, the results of sev- eral major studies have been published on environmental impacts and resulting external costs; and, through these studies, the consistent framework for the quanti- fication of the energy related external costs was formulated; among them there were the EC funded ExternE study [8, 11–17], the study on External Costs of Fuel Cycles of the US Department of Energy [18–25], and the New York Study [26–31]. There are two approaches used for the assessment of health impacts and the external costs of air pollutions emitted from the power plants: the top-down ap- proach and the bottom-up approach. In the top-down approach, generic damage costs are estimated at the national level for various types of impact and are then ascribed to registered emissions of pollutants in order to determine an average external cost per unit of emission. Usually, this method requires highly aggre- gated data for emissions and damages they cause [32]. The bottom-up approach, known as the Impact Pathway Approach, is supposed to measure impacts of the energy generation systems through step-by-step analysis, starting from emissions and completing with economic valuation of the damages to health and environ- ment. The procedure starts from the identification of the pollutants from the plants, the assessment of atmospheric dispersion of the pollutants, the estimation of the ground concentration of the pollutants, the estimation of various health im- pacts on the ground, and the estimation of the monetary values of those health impacts. Together with the US EPA guideline [33], many of the studies carried out in the US and in the EU [1, 8, 11–25] used the Impact Pathway Approach, and reported the results with the normalized monetary value of the damages, i.e. the damage cost in US dollars per unit electricity generation, US dollars/kWh, to fur- ther compare the results with the price of electricity. Y. Matsuki, O. Brondzia, O. Maslukivska ISSN 1681–6048 System Research & Information Technologies, 2010, № 4 20 Later, the methodology was published by the International Atomic Energy Agency as the guideline document [34], and also a computer code, EcoSense, was developed by Stuttgart University and used in the ExternE project of the Euro- pean Commission. In the guideline document [34], it was forecasted that a simpli- fied computer code would be developed because there had been enough number of reports published in the United States and in the European Union, to find what parameters are more influential than others. And then, the SimPact Computer Code [35] was developed. With this Computer Code, the possibility of calculating the health impacts and the damage costs of air pollution increased, also in Ukraine; however, there has not been any published report on the case study of this topic in Ukraine. 3. Assessment of the health impacts. The method of estimating the health impacts from the ground concentration have also been published in several major reports, including Rabl [9] and Wilson and Spengler [36]. These publications de- fine the factors that are to be multiplied with the ground concentration levels, to get the number of the cases of different types of the health impacts. Among them, Pope et al. [5] and Dockery et al. [6] reported the positive correlations between the exposure to particles and the total mortality. And then, the methodology to estimate the mortalities several years after the exposure to the air pollutants, the long-term mortality, were developed [8]. Almost all of the currently available epidemiological studies of air pollution fall into two classifications of studies, which include: • аcute exposure studies that are typically time-series studies and use short term changes in air pollution over time (usually 1–5 days) as the source of expo- sure variability; • сhronic exposure studies which use longer-term pollution data (usually one year or even more) [36]. The primary pollutants from the fossil-fuel electricity generation stations are PM10, SO2 and NOx [9], but there are also the secondary pollutants that are to be chemically transformed from the primary pollutants after the emission into the air. The SimPact Code [37] assumes that the nitrates and the sulfates are to be formu- lated only beyond 50 km radius from the emission source, causing different types of health impacts from those of the primary pollutants. Table 1 shows the types of the health impacts due to the air pollutants. 4. Assessment of the damage costs. The necessity to estimate the damage cost for the long-term mortality led to the method, including the technique to sur- vey the people’s Willingness to Pay (WTP) for the prolongation of human life [38] and the technique to calculate the unit cost of the long-term mortality, which takes into account the discount-rate for a long period from the present time [39]. The unit costs to calculate the other types of health impacts are also reported in ExternE [17]. Those unit costs such as in Rabl [9] are the values in the EU countries, but the method to estimate the country specific unit costs in non-EU countries was also reported by Markandya [40] that is included in the IAEA’s SimPact Computer Code by Spadaro [35], which is called the Benefit Transfer Model that considers the ratio of the Purchasing Power Parity Gross National Product (PPP GNP) of the EU and the non-EU countries. About the unit cost of Ukraine, it is reported that the methodology developed by the US EPA and ad- justed in Russia for Eastern European transition countries was used for the as- sessment of the air pollution costs from PM2,5 in Ukraine [41]. External cost as indicator for sustainable electricity generation system … Системні дослідження та інформаційні технології, 2010, № 4 21 5. The Power Station. Under the framework of this research, the assessment was performed for the Trypilska Power Station. This power station is located in Kyiv region, in Ukrainka town, which is 36 kilometers from Kyiv to the south. There are several reasons for choosing Trypilska Power Station to be a theme of this research. First of all, it is the power station with a big size of energy produc- tion capacity in Ukraine (1800 MWt), besides, it supplies energy to three regions of Ukraine: Kyiv, Zhytomyr, and Cherkasy. Secondly, according to the National report of Kyiv region in 2006, the Trypilska thermoelectric power station, which is the biggest industrial object in Kyiv region, located about in the center of Ukraine, is the main source of emissions in the whole region [42]. METHODOLOGY As described in above section, there are two approaches used for the assessment: the top-down and the bottom-up approaches. For this study, the bottom up ap- proach is appropriate to take, because this is the common approach used in the recent studies on the health impacts and the damage costs in the US and in the EU ([1, 8, 11–31]); and, because, by using this approach, each step of the procedure and the input data can be examined for the case study in Ukraine. The bottom-up approach, known as the Impact Pathway Approach, is sup- posed to measure impacts of the electricity generation systems through step-by- step analysis, starting from emissions and completing with economic valuation of the damage costs. The main idea of the Impact Pathway Approach is a logical way of quantifying the damage costs, which results in the observation of the whole process of the electricity generation activities, emitted pollutants, their am- bient concentrations and their incremental impacts on the environment and peo- ple’s health, and, at last, monetary valuation of such impacts. In the case of pol- lutants, the approach begins with determining the quantity of emissions from a defined source, and then makes use of dispersion models and dose–response func- tions to determine the marginal damages resulting from the emissions. The final step consists of multiplying the marginal damages by their estimated unit mone- tary value. The approach is site specific and the marginal external costs obtained are in principle not transferable [32]. In order to measure impacts of fuel use on the health, the Impact Pathway Approach is being widely used in Europe and North America as the main approach of the external cost assessment. The first step of the analysis is to identify the amount and the types of air pollutants, which are specific to the concerned power station. In this study, the primary pollutants are PM10, SO2 and NOx, which lead to different types of mor- bidities and mortalities. The second step is to measure atmospheric dispersion. The local and the re- gional dispersion models are used to account for all significant damages. Local domain is a territory up to 50 km around from the source of emissions, whereas regional domain covers larger territory which expands up to 1000 km from the emission source [35]. In this study, the atmospheric dispersion was calculated by two different models for these two different dispersion ranges, as shown by for- mulas 1 and 2. In this study, Gaussian plume model was used for estimating the Y. Matsuki, O. Brondzia, O. Maslukivska ISSN 1681–6048 System Research & Information Technologies, 2010, № 4 22 ground concentrations within the local domain (up to 50 km radius), and the Uni- form World Model was used within the regional domain (from 50 km to 1000 km radius) in the SimPact Computer Code [35]. The outlines of these two models are shown by formulas 1 and 2. Simplified Gaussian plume model for the local domain of less than 50 km [35]: 22 22 LOCAL 1 ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ −⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ − ⎥ ⎦ ⎤ ⎢ ⎣ ⎡ = Z E Y hy ZY ee uQ C σσ σσπ , (1) where, C — the concentration of pollutant in quantity per unit volume (µg/m3); Q — the quantity emitted per unit time by a chimney stack considered to be at the origin or coordinates; Zσ — the standard deviation of the normal distribution densities in the vertical dispersion, depends upon the atmospheric stability (m); Yσ — standard deviation in the horizontal dispersion, depends upon the atmos- pheric stability (m); u — wind speed (m/s); x — distance from the source of emission (m); y — height from the ground (m); Eh — the height of the plume, not simply the stack height because hot gases usually make the plume rise even after leaving the stack, although adverse meteorological conditions can cause downwash (m). Uniform World Model for regional domain from 50 km to about 1000 km [35]: r hu k e rhuQ C ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ − ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ = MIX UNI 1 2 1 MIXREGIONAL π , (2) where, MIXh — a mixing layer height, in which the atmospheric dispersion oc- curs (m); r — radius from the emission source (m); UNIk — depletion velocity (m/s); u — an average wind speed (m/s). During this study, in order to estimate the health impacts from the air pollut- ants emitted from the Trypilska Power Station, the list of Exposure-Response Factors (ERF) was used, as shown in Table 1. These factors are to be multiplied by the ground concentration to calculate the health impacts. PM10 Restricted Ac- tivity Days is from ExternE 1998 [17], and the others are from Rabl 2001 [44]. The Exposure-Response Factors of these two references are based on the studies of health impacts from the air pollutions that were started after Dockery et al. 1993 [6] found the correlation between the air pollutions and the health impacts. The correlations are assumed as the linear functions. The next step is to calculate the health impact caused by increased ambient concentrations of the pollutants [34]. Impacts are estimated by the dose-response function, also known as the concentration-response or the Exposure-Response Factor (ERF) [43]. The ERF is concerned about the quantity of the pollutant that affects a receptor (for example, population) to the physical impact on the receptor (for example, the number of the hospital admissions). It was assumed that the human body of average Ukrainian is as same as average European, and then the ERF used for the European case studies [17, 44] was used for the case study in Ukraine. External cost as indicator for sustainable electricity generation system … Системні дослідження та інформаційні технології, 2010, № 4 23 T a b l e 1 . Exposure-Response Factors to calculate the health impacts [17, 44] Range Health Impact Cases/µg/m3 PM10 long-term mortality 2.600 × 10 –4 PM10 Chronic Bronchitis 5,855 × 10 –5 PM10 Restricted Activity Days 2.500 × 10 –2 NOx Chronic Bronchitis 5.055 × 10 –5 SO2 Short-term Mortality 2.300 × 10 –6 PM10 Bronchodilator Use 1.404 × 10 –3 Local Range (<50 km radius) and Regional Range (from 50 to about 1000 km) PM10 Lower Reparatory Symptoms 3.750 × 10 –3 Nitrates Cardiovascular Hospital Admission 8.400 × 10 –4 Sulfates Long-term Mortality 4.342 × 10 –4 Nitrates Long-term Mortality 2.600 × 10 –4 Sulfates Chronic Bronchitis 9.778 × 10 –5 Nitrates Chronic Bronchitis 5.055 × 10 –5 Nitrates Respiratory Hospital Admission 2.840 × 10 –6 Regional Range (from 50 to about 1000 km) Sulfates Respiratory Hospital Admission 4.743 × 10 –6 METHOD FOR MONETERY VALUATION The damage costs are to be calculated from the health impacts that should have been calculated in the previous step, by multiplying the unit cost of each mortality or morbidity with the number of cases of the mortality or morbidity. In this case study, the results are shown with the unit costs used in the other case studies car- ried out in the EU [17, 44], and with the unit costs with Ukrainian value, which were evaluated by the contingent valuation for the monetary values of the long- term mortalities, and by the Benefit Transfer Model [40] for the other health im- pacts. Contingent Valuation is the general expression of evaluating people’s will- ingness to pay for their life, by setting a hypothetical market condition that doesn’t exist. The estimated monetary values are to be obtained through the inter- view process. For monetary valuation of the long-term mortalities caused by the air pollu- tions, such as PM10, nitrates and sulfates, the contingent valuation was used to assess the Willingness to Pay (WTP) and to evaluate the unit cost. This method provides the values of the environment goods, such as clean air, clean water, and quiet environment, based on the individual preferences in terms of the willingness to pay (WTP) for the improvement of the quality of the environment, or by the willingness to accept the current cost of the environment [38]. In this research, the WTP Questionnaire developed during 2005–2006 by the team of European experts headed by Rabl [38] was used. This questionnaire pre- sents an innovative approach of the valuation because it is based directly on the change of life expectancy (LE), in contrast to the previous valuations of air pollu- tion mortality that were based either on accidental deaths or on small changes in the probability of dying. The inquirer consists of four sections, which are devel- oped in the form of questionnaire and also in the form of article about the correla- tion of life expectancy and air pollution. Thus, there is the information about negative influence of air pollution on human health and possible approaches that can decrease the level of the air pollution. Interviewees are supposed to mention the amount of money they are ready to pay for prolongation of their life on 3 and 6 months, in other words, they need to measure a value of increase in their life Y. Matsuki, O. Brondzia, O. Maslukivska ISSN 1681–6048 System Research & Information Technologies, 2010, № 4 24 expectancy if air pollution is reduced. So, as a result, a value of one year of life, VOLY, can be measured. VOLY obtained by the WTP Survey can be applicable for further calcula- tions of the values of the unit costs, which are defined as the unit damage costs for the long-term mortality. The Benefit Transfer Model is widely used for measurement of unit damage cost of health impacts in one country through already estimated unit damage cost of health impacts in the other country. In this research, this model was used for evaluating the damage costs of various health impacts, except the long-term mor- talities. In order to estimate a damage cost, an adjustment should be made to re- flect differences in real income, and hence the WTP to reduce damages, between two countries [40]. Markandya recommends the following equation (3) [40] to be used for such an adjustment: γ ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ ×= EU COUNTRY GNPPPP GNPPPP EUinCostUnitCOUNTRYinCostUnit , (3) where, PPP GNPCOUNTRY is the Purchasing Power Parity Gross National Product of the country normalized per capita, PPP GNPEU is the average European Union Purchasing Power Parity Gross National Product normalized per capita, and γ is the income elasticity coefficient, which shows how the WTP value will change with the income change. As revealed by Rabl et al., if the income elasticity equals 1, the benefit transfer error is just about 36–41 % [39]. But, if income elasticity is less then 1 (e.g. 0.35, 0.40–0.60), then the transfer error is about 67–72 % [39]. In this research, it was assumed that the income elasticity is 1. In the study, the above equation was applied for adjusting the EU unit costs to the Ukrainian unit costs. The calculated values of Ukrainian unit costs are pre- sented in Table 2. The unit costs for the long-term mortalities by PM10, nitrates and sulfates are to be estimated by the contingent valuation (WTP survey). T a b l e 2 . Unit damage costs for European Union countries and estimated unit costs in Ukraine in US$1998, by the Benefit Transfer Model EU UKRAINE Rangle Health Impact Unit cost (US$/case) Unit cost (US$/case) PM10 long-term mortality 101 000 15 600 PM10 Chronic Bronchitis 177 800 27 462 PM10 Restricted Activity Days 116 18 SO2 Short-term Mortality 174 000 26 875 PM10 Bronchodilator Use 42 6 Local Range (<50 km radius) and Regional Range (from 50 to about 1000 km) PM10 Lower Reparatory Symptoms 8 1 Nitrates Cardiovascular Hospital Admission 3 420 528 Sulfates Long-term Mortality 101 000 15 600 Nitrates Long-term Mortality 101 000 15 600 Sulfates Chronic Bronchitis 177 800 27 462 Nitrates Chronic Bronchitis 177 800 27 462 Nitrates Respiratory Hospital Admission 4 540 701 Regional Range (from 50 to about 1000 km) Sulfates Respiratory Hospital Admission 4 540 701 PPP GNP (1998) in US$[45] 20 269 3 130 External cost as indicator for sustainable electricity generation system … Системні дослідження та інформаційні технології, 2010, № 4 25 RESULTS 1. Input data In order to carry out an impact assessment from electricity generation at the Trypilska Power Station, the level of emissions per year in tons, meteorological data of the region, the emission data of the power station, and number of affected population were identified. This power station is located in Kyiv region, in Ukrainka town, which is 36 kilometers from the capital city, Kyiv, to the south. Table 3 shows the level of emissions in 2006 from the Trypilska Power Sta- tion, provided by the national report about the environment in Kyiv region in 2006 [3]. The amount of the emissions of SO2 and NOx were identified; however, because the air-pollution monitoring in Ukraine provides only the data of Total Suspended Particles (TSP), but not the data about the level of PM10 . Therefore, the conversion factor was used to estimate the emission level of PM10. According to the US Environmental Protection Agency [33], the ratio between TSP and PM10 is PM10 = 0.5TSP Table 3 shows the technical characteristics of the emis- sion source of the Trypilska Power Station. After ground concen- tration is calculated, the health impact can be calcu- lated by multiplying the ground concentration of pollutants by the value of the Exposure-Response Factor for each type of the pollutant (See Table 2). Table 5 shows the in- put data for calculating the ground concentrations of the pollutants by atmos- pheric dispersion models for the local and the re- gional domains. The at- mospheric stability D type was assumed, as this type represents the neutral dispersion condition. T a b l e 5 . Input data for the assessment in the atmospheric dispersion Parameter Value Local Population Density 62.0 persons/ km2 Radius of Local Domain 56.0 km Regional Population Density 76.9 persons/km2 Anemometer height 10.0 m Air Temperature 285.5 degree K Wind speed 2.62 m/sec Atmospheric stability D type T a b l e 3 . Level of emissions in 2006, Trypilska Power Station [3] Name of the pollutant Emissions, tons/year Total 74 605 000 Metals and their compounds 22 087 Total suspended particles (TSP): PM10 21 951 116 10 975 560 Nitrogen compounds 11 108 921 Sulfur oxide and other sulfur compound 40 909 568 Carbon oxide 564 363 T a b l e 4 . Technical characteristics of the emission source [4] Parameters Value of parameters Stack height, m 180 Diameter of the stack, m 9.6 Flow rate from the stack, m/s 14 Released gas temperature, K 413 Y. Matsuki, O. Brondzia, O. Maslukivska ISSN 1681–6048 System Research & Information Technologies, 2010, № 4 26 2. Willingness to Pay (WTP) survey In order to evaluate the Willingness to Pay (WTP) for the prolongation of life for one year, the contingent valuation was carried out among Ukrainians. This re- search was the first time of such exploitation in Ukraine. The contingent valuation was carried out with the questionnaire developed in European Union in 2005–2006 by a team of experts headed by Ari Rabl [38]. The WTP Survey was conducted in between April and May 2008 upon 70 people in Kyiv City which is the capital of Ukraine. The aim of the research was to question Ukrainian people in order to reveal an amount of money which they are willing to pay to prolong their life. Interviews, which were carried out on one-to-one basis, in general, lasted on average about for 20 minutes. During an interview people were sup- posed to answer questions developed by Rabl [38] for the purpose of defining a Value of Life Year Lost (VOLY). This characteristic is especially important for the impact assessment in areas with air pollution, because it shows the amount of money in which people value one year of their life lost. The samples were the people selected and interviewed on the streets in Kyiv, as well as the students of the National University of Kyiv-Mohyla Academy and the National Technical University «KPI». Table 6 shows the aspects of demogra- phy and socio-economics among interviewees, together with the national demog- raphy of Ukraine. This table shows that the selected samples represent the na- tional demographic distribution of the public of Ukraine. T a b l e 6 . Input data for the assessment in the atmospheric dispersion Aspects Interviewees Ukraine Population[42] Number of observations 70 48 457 000 Female, % 61.4 53.7 Gender Male, % 38.6 46.3 Individual’s net annual income ($ PPP) 4 510 Workable age, % (Female:16-54/ Male:16-59) 58.0 Average age 34.04 Older than workable age, % (Femail:55/Male:60) 23.9 University education (%) 84.3 31.3 Fig. 1 shows how the interviewed people in Kyiv are aware of air pollution and its influence on their health and the life expectancy. Among 70 observations, 50 % of respondents replied that they are very con- cerned with how air pollution influences their health, 42.9 % — replied that they are somewhat concerned, 5.7 % — are not so much concerned, 0 % — is that this problem is out of their concern (not at all), 1.4 % of samples had missing answers. Therefore, it is obvious to conclude that about 90 % of people are concerned with the impact of air pollution in their living area. The next step was to identify how many people are ready to accept a higher cost of living, therefore an increase in their daily expenses, to gain an increase in their life expectancy. It was revealed that 9 people were negative about such in- crease of expenses, two of them were not interested in living longer, two were negative because they believed that someone else should pay for better environ- ment, and other five refused such a scenario of link between air pollution and life expectancy. External cost as indicator for sustainable electricity generation system … Системні дослідження та інформаційні технології, 2010, № 4 27 Out of 61 left observations, 17 samples were identified as defectives, be- cause the willingness to pay for one year of life prolongation derived from 6 month gain and 3 month gain were not in the expected rational order. Therefore, the final VOLY for one year of life prolongation was calculated with 44 samples, from the willingness to pay for 6 month gain in life expectancy multiplied by two. The results of this WTP survey showed that the average number of VOLY is 790 US dollars. According to the equation (4) below [39], the Value of Statistical Life (VSL), can be calculated, on the basis of which a unit cost for long-term mortality cases is measured, ( )Nr V r V r VVVSL + ++ + + + += 1 ... )1(1 2 , (4) where, V is a value of one year of life lost, VOLY. r is a discount rate, because it is assumed that the VOLY will become smaller every year when seeing one’s willingness to pay in one’s own future at the present time. 3 percent was chosen for this calculation, as practiced in the precedent studies. N is the number of the years of a statistical human life. 37.5 years were chosen as N in this calculation, while 37 years were assumed as the total length of human life, and it was assumed that the a half of the total life length was the average life length left for the pur- pose of calculating the value of life after the exposure to the pollutions. The calculated unit cost for the long-term mortality was 18.264 US dollars, and then 18.000 US dollars was chosen to calculate the damage costs of the chronic mortalities to be caused by the air pollutions from the Trypilska Power Station. 3. Damage cost Table 8 shows the calculated numbers of the health impacts from energy produc- tion at the Trypilska Power Station in the local domain, which has a radius of less than 50 kilometers, and in the regional domain, which covers a territory with a radius up to about 1000 kilometers, and which covers most of the territory of Ukraine. In the calculation for the local domain, the uniform wind direction, the uni- form population density of 61.8 persons/km2 for 50 km radius, and weighted av- 0 10 20 30 40 50 60 very much somewhat not so much not at all missing Responses Fr eq ue nc y, % Fig. 1. Responses to Question: Are you concerned with the effects of air pollution on your health? Y. Matsuki, O. Brondzia, O. Maslukivska ISSN 1681–6048 System Research & Information Technologies, 2010, № 4 28 erage wind speed of 2.62 m/sec uniformly over all directions were assumed. For the regional domain, the population density assumed was 76.9 persons/km2. The impact assessment in regional domain also includes the impact of secondary chemical transformations of sulfur dioxide (SO2) and nitrogen oxides (NOx), as shown as sulfates and nitrates respectively in Table 7. T a b l e 7 . The distribution of health impacts in local and regional domains by SimPact Code cases/one year exposure Pollutant Health impact Local domain Regional domain Long-term mortality 14.300 954 Chronic bronchitis 3.220 215 Restricted Activity Days 1 374.000 91 690 Bronchodilator use 77.200 5 149 PM10 Lower Respiratory Symptoms 205.000 13 700 SO2 Short-term mortality 0.471 29 Long-term mortality – 2 504 Chronic bronchitis – 564 Sulfates Respiratory hospital admission – 27 Cardiovascular hospital admission – 32 Long-term mortality – 992 Chronic bronchitis – 193 Nitrates Respiratory hospital admission – 11 As a result, the health impact in regional domain is higher than in local do- main, because regional population density is higher than local one, and the area of the regional domain is larger. In order to assess the external cost of air pollution due to the electricity gen- eration, the total damage costs were calculated. Assessment was made with the European Union’s unit damage costs for health impacts and Ukrainian unit damage costs shown in Table 2. The calculated total damage costs of the air pollution at the Trypilska Power Station are presented in Table 8. T a b l e 8 . Total damage cost, caused by air pollution from the Trypilska Power Station, Ukrainka, Ukraine Damage cost, 1000 US $ With EU unit costs With Ukrainian unit costs Pollutant Local domain Regional domain Total Local domain Regional domain Total PM10 2 179 145 456 147 635 371 24 760 25 130 SO2 82 4 983 5 065 13 770 782 Nitrates – 134 649 134 649 – 23 180 23 180 Sulfates – 353 324 353 324 – 60 570 60 570 TOTAL 640 673 109 662 If European unit costs are used for the calculations, the total damage cost from Trypilska Power Station is about 641 million US dollars. If the Ukrainian unit costs are used, the total damage cost is six times smaller than with European ones, and equals to about 110 million US dollars. While comparing the results of damage cost assessment separately for each pollutant, it is noticeable that damage costs of PM10 in local domain and sulfates in regional domain are bigger than the External cost as indicator for sustainable electricity generation system … Системні дослідження та інформаційні технології, 2010, № 4 29 others in each domain; in the other words, PM10 and sulfates have more negative influence on human health, and, as a result, their damage costs are higher. The average annual electricity generation at the Trypilska Power Station is 1.80 TWh [82]. Hence, a total damage cost per kilowatt-hour of electricity gen- eration at Trypilska Power Station was calculated. Table 9 shows the damage costs per kilowatt-hour with the unit costs of the European Union and of Ukraine. T a b l e 9 . Total damage cost per kilowatt-hour of electricity generation at the Trypilska Power Station Lokal Regional Total EU 1.26 355 356 Damage cost per kilowatt-hour, mUSD/kWh Ukraine 0.213 60.7 60.9 To compare with the electricity price in Ukraine, damage cost per kilowatt- hour of electricity generation in US dollars was converted to Ukrainian national currency, Ukrainian Hryvnya (UAH), in Table 10. T a b l e 1 0 . Total damage cost per kilowatt-hour of electricity generation in UAH With EU unit cost With Ukrainian unit cost Damage cost per kilowatt-hour, mUSD/kWh 1.78 0.30 There is no doubt about this amount of money to be the external cost of elec- tricity generation in Ukraine; because, the sum of money is not included in the price of electricity, and at the same time, the people affected by the air pollution from the electricity generation do not receive any compensation for the health impacts. Nowadays, Joint Stock Company «Kyivenergo» has fixed the average weighted tariff of electricity for consumers in the total amount of 0.2872 UAH/kWh [46]. However, it does not necessarily mean that the amount of the external costs obtained during this research should be added to the current price of electricity. On a contrary, policy makers in Ukraine should take into consideration the estimated external costs. And, it is necessary to find possible ways to reduce and/or internalize the external cost into the price mechanism of the electricity. As shown above, the assessment of damage cost of the impact of the fossil- fuel electricity generation station was able to be made, using the recently devel- oped method of monetary valuation of health impacts. There is an internationally practiced method, the Benefit Transfer Model, to transfer the values of the EU to non-EU countries including Ukraine, using the ratio of PPP GNP between the EU and non-EU countries. Also, the method to evaluate the people’s willingness to pay for prolonging their life was examined in Ukraine, and compared to the calcu- lated unit cost by the Benefit Transfer Model. While the unit cost evaluated from the interview surveys on the people’s willingness to pay for prolonging one year of life is 18,000 US dollars, the unit cost calculated by the PPP GNP ratio of the EU and Ukraine is 15,600 US dollars, which are comparable to each other. CONCLUSIONS Upon the results of the case study in Ukraine, the followings are concluded, and the direction of the future research is identified: 1. The externality study appeared in Europe and the United States in the 1990s as a result of existing problem of negative influence onto the human health, Y. Matsuki, O. Brondzia, O. Maslukivska ISSN 1681–6048 System Research & Information Technologies, 2010, № 4 30 natural environment, and built environment of air pollution from energy produc- tion. Since 1996, the ExternE project of the European Commission started the external cost assessment widely in the countries of the European Union. Unfortu- nately, in Ukraine this type of project had not been implemented. 2. The Impact Pathway Approach is the bottom-up method, which is to as- sess the impacts of electricity generation systems through step-by-step analysis, starting from emissions and completing with monetary valuation of the damages. It is a logical way of external cost assessment, which accounts the emitted pollut- ants and their ambient concentration, the impacts on human health, and their monetary values. 3. The Willingness to Pay Survey carried out among Kyiv citizens defined that Ukrainians estimate the value of life loss (VOLY) in the amount of 790 US dollars. 4. Calculation of health impacts and damage costs of air pollution from elec- tricity generation at Trypilska Power Station in Ukrainka town were obtained, with the SimPacts Compute Code. These impacts and the damage costs were cal- culated in the local domain (up to 50 km radius) and in the regional domain (up to about 1000 km). 5. The damage cost of health impacts estimated by the EU unit costs is ten times larger than with the Ukrainian. 6. The estimated damage costs per kilowatt-hour of electricity generation is 360 mUSD/kWh and 61 mUSD/kWh by the EU unit cost and by the Ukrainian unit cost respectively. In comparison with the current electricity price in Ukraine, 57.6 mUSD/kWh or 0.2879 UAH/kWh (assuming 1 USD (dollars) = 5 UAH), it is concluded that the estimated external cost of the health impacts is sizable, in comparison with the price of electricity. 7. As shown above, the assessment of damage cost of the fossil-fuel electric- ity generation station was able to be made, using the recently developed method of monetary valuation of health impacts. There is an internationally practiced method, the Benefit Transfer Model, to transfer the value of the EU to non-EU countries including Ukraine, using the PPP GNP ratio between the EU and non- EU countries. Also, the method to evaluate the people’s willingness to pay for prolonging their life was examined in Ukraine, and compared to the unit cost cal- culated by the Benefit Transfer Model. While the unit cost evaluated from the interview surveys on the people’s willingness to pay for prolonging one year of life is 18 000 US dollars, the unit cost calculated by the PPP GNPs of the EU and Ukraine is 15 600 US dollars. 8. The estimated damage costs of Ukraine are the external cost that are not included in the price of electricity, and the people affected by the air pollution do not receive any compensation for the health impacts. 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Kyivenergo. Tariff structure for electricity. — http://www.mepress.kiev.ua/tariffs. php?artid=195. Received 23.11.2009 From the Editorial Board: the article corresponds completely to submitted manu- script.