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True Cost of Hydropower

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True Cost of Hydropower THE TRUE COST OF HYDRO HYDROPOWER is considered by many as a HOWEVER, HYDROPOWER IS NOT cheap, low-carbon energy option that can A CHEAP SOURCE OF ENERGY help China to reduce emissions affordably. A number of important energy scenarios The true costs of hydropower in China are have been published in recent years, consistently being underestimated or anticipating a large increase in the ignored, including the environmental and development of hydropower as part of social costs, infrastructure costs and China’s energy mix. One study proposed that implications of high seasonal variability. hydropower capacity increase to 510GW of installed capacity, from current government forecasts of 280GW. ENVIRONMENTAL COSTS The environmental impacts of large dams are numerous and include direct impacts on the biological, chemical and physical properties of rivers and riparian environments. YANGTZE RIVER FISHERIES IN DECLINE DAMS UNDER CONSTRUCTION 1950S 21ST CENTURY 3 ONLY MORE DAMS 60K TONS/YR PLANNED 450K TONS/YR FISH HARVEST RATE 16 ONLY 2.2 FISH HARVEST RATE FISH SPECIES 1.8GW GW WERE FOUND IN 2013 SUMMER 6.4GW LUDILA DAM 17 WWF FIELD SAMPLING LONGKAIKOU DAM 2007-2013 XIANGJIABA DAM 2007-2013 FISH SPECIES 13.9GW 2006-2013 143 HISTORICALLY REPORTED XILUODU DAM 2005-2013 22.5GW THREE GORGES DAM 1994-2006 2.4GW GEZHOUBA DAM 1970-1988 In addition, HUNDREDS of hydropower dams have been built on the tributaries in the Yangtze River Basin THE FISH ECOSYSTEM IS ON VERGE OF COLLAPSE Sources: 2013 Yangtze River Upstream Joint Science Expedition Report by Yangtze River Fishery Resources Committee under the Ministry of Agriculture and WWF China. SOCIAL COSTS DISPLACEMENT OF PEOPLE due to hydropower projects can result in the loss of livelihoods, disappearence of local cultures, increased social conflicts, corruption in resettlement compensation implementation, and infringed legal rights. Resettlement mitiga- tion and compensation are often inadequate or poorly managed. Hydropower projects planned over the next few years are mostly located in the areas where ethnic minorities live and will result in what some experts predict will be the biggest migration of ethnic minorities ever witnessed in China. IN THE LAST SIXTY YEARS, THE NUMBER OF DISPLACED PERSONS CAUSED CHINA BUILT MORE THAN BY THESE DAMS IS GREATER THAN 86,000 23,000,000 DAMS, THAT’S THE SAME AS THE WHOLE POPULATION OF AUSTRALIA 22,000 8,000,000 OF THEM OF WHICH ARE LARGE DAMS. ARE STILL IN POVERTY Source: The Last Report on China's Rivers INFRASTRUCTURE COSTS Plans to add 160GW over the next 15 years mostly in Southwest China will requireTRANSMISSION large investments CAPITAL COST in transmission (RMB) lines and large maintanence bills due to seismic hazard. China has a poor record on cost overruns in hydropower. THE TRUE COST XIANGJIABA DAM DAM CAPITAL COST (RMB) TO DATE + TRANSMISSION CAPITAL COST (RMB) (7,750MW) 54.1 BN* 23.3 BN XILUODU DAM (13,860MW) 79.2 BN**BUDGETED COST ONLY 40 BN AVERAGE COST OVERRUN OF LARGE DAMS BY GEOGRAPHY LOCATION OF SOUTHWESTJinsha RiverDAMS AND SEISMIC HAZARD OF HYDRO Lancang River Nu River 0 25 50 75 100 200 500% IN CHINA, THE AFTER WENCHUAN EARTHQUAKE ACTUAL COSTS DAMS ARE ON AVERAGE 75% 2,380AT RISK HIGHER THAN BUDGETED COSTS RMB 36 BNREPAIR BILL Sources: www.cctv.com, www.csg.cn, www.gov.cn, www.sgcc.com.cn, Ansar A. et al. Should we build more large dams? The actual costs of hydropower megaproject development, Energy Policy (2014), http://dx.doi.org/10.1016/j.enpol.2013.10.069i VARIABILITY Electricity generated from hydropower varies with the availability of water resources. For example, twice as much hydropower is generated in the wet season compared with the dry season. Additional hydropower capacity will only increase China’s dependency on energy sources like coal, gas and nuclear. High seasonal variability also means that hydropower is not an alternative to coal. THE CONTRIBUTION OF HYDROPOWER AND COAL POWER TO TOTAL ELECTRICTY GENERATION 2010 2015 2020 85% 80% 676* 910 1,200TWH of targeted hydropower electricity generation 75% 70% 2010 2011 2012 2013 2014 184* 224 271 TWH JAN DEC JAN DEC JAN DEC JAN DEC JAN SEPT of estimated seasonal difference (May-Oct vs Nov-Apr) 25% GOV’S ANNUAL 20% TARGET IN 2015 EQUIVALENT TO HALF-YEAR GENERATION CAPACITY FROM 15% LARGE COAL 10% 180 220 270 FIRED PLANTS HYDRPOWER FIRE WET SEASON DRY SEASON DURING THE 2010 DROUGHT IN SOUTHWEST CHINA, MORE HYDROPOWER HYDROPOWER ELECTRICITY GENERATION FROM THE = FOUR SOUTHWEST PROVINCES DROPPED OVER 30%. INCREASED EXPERTS PREDICT THAT THE VARIABILITY OF HYDRO- DEPENDANCE ON POWER WILL BE INCREASED BY CLIMATE CHANGE COAL, GAS OR NUCLEAR! IN COMING DECADES. *HISTORIC DATA Sources: www.stats.gov.cn, www.coalstudy.com ALTERNATIVE ENERGY PATHWAYS MODELING SHOWS CHINA CAN ACHIEVE AMBITIOUS GHG EMISSIONS REDUCTION GOALS, WITH VERY LIMITED HYDROPOWER DEVELOPMENT, MEETING GROWING ENERGY DEMAND AT THE SAME TIME. 25,000 RIVER CONSERVATION 20,000 SCENARIO AVOIDED GENERATION FROM EFFICIENCY 15,000 MEASURES AND STRUCTURAL ECONOMIC CHANGE 10,000 5,000 HOURS PER YEAR TERAWATT 2011 2015 2020 2025 2030 2035 2040 2045 2050 1 1 1 1 4 0 2 2 0 1 11 16 14 22 0 25 27 33 31 33 21 0 76 38 16 1 25 7 0 5 14 11 31 30 COAL GAS NUCLEAR HYDRO WIND SOLAR OTHER RENEWABLES % OF ELECTRICITY FROM DIFFERENT ENERGY SOURCES 8,000,000 OF THEM ARE STILL IN POVERTY ALTERNATIVE ENERGY PATHWAYS BASELINE SCENARIO HIGH RENEWABLES SCENARIO RIVER CONSERVATION SCENARIO China implements no specific Building off of a High Efficiency China meets its electricity clean energy or efficiency policies Scenario, China meets its demand with renewable sources, other than those currently electricity demand with renewable excluding new large hydro dams. proposed and does not undertake sources and hydropower. Instead of vastly expanding major structural economic China’s hydropower from the reforms. roughly 215 GW in 2011, damming of China’s rivers would end by 2020 and capacity would not breach 270 GW. ELECTRICITY 25,000 ELECTRICITY 25,000 RIVER 25,000 GENERATION GENERATION 20,000 CONSERVATION 20,000 BASELINE HIGH RENEWABLES SCENARIO SCENARIO 15,000 SCENARIO 15,000 15,000 10,000 10,000 10,000 TERAWATT HOURS PER YEAR TERAWATT 5,000 5,000 5,000 2011 2015 2020 2025 2030 2035 2040 2045 2050 2011 2015 2020 2025 2030 2035 2040 2045 2050 2011 2015 2020 2025 2030 2035 2040 2045 2050 AVOIDED GENERATION FROM EFFICIENCY MEASURES COAL GAS NUCLEAR HYDRO WIND SOLAR OTHER RENEWABLES AND STRUCTURAL ECONOMIC CHANGE TOTAL ECONOMIC COST OF THE ELECTRIC (MILLION TONNES PER YEAR) CARBON EMISSIONS POWER SYSTEM 2011-2050 (TRILLION RMB) 4000 376 361 368 HISTORIC DATA HIGH RENEWABLES RIVER CONSERVATION HIGH RIVER BASELINE BASELINE 1000 RENEWABLES CONSERVATION 250 1990 2000 2010 2020 2030 2040 2050 METHODOLOGY This research paper explores: generated electricity of hydropower in China over the past 10 years, as well as the various assumptions taken by various energy • external costs of hydropower development in China; modelling efforts. • the issue of seasonal variability of supply from hydro; • alternative scenarios to large hydropower development Alternative solutions were explored and one of the alternatives for China’s electricity sector mix until 2050. presented as the river conservation scenario model in this research was prepared by the Energy Transition Research That the external costs, high seasonal variability and alternative Institute (Entri). Further study will be required to examine how to renewable energy models exist is beyond doubt and warrants optimize the future energy plan while protecting the rivers in further investigation by energy and climate experts currently China. Entri developed a model for China’s electric power system, advocating and proposing low carbon emissions scenarios for which was used to produce a comprehensive study of energy China. scenarios to 2050 for a report published by WWF China titled “China’s Future Generation” (February 2014). The river conserva- For the infrastructure and resettlement costs, this research relies tion scenario was based on the Entri model. The key constraints on both a literature review of publicly available information on were: dam costs, as well as data collected by International Rivers and provided online in its Spreadsheet of Major Dams in China. • Hydro was limited to 270 GW total at its maximum level in year 2020 and maintained until 2035. For biodiversity costs, the research draws on a range of key • The expected lifetime of hydroelectric power dams was studies on the Yangtze River documenting the severe environmen- set at 50 years. tal costs associated with hydropower development in the water- • Gas fired capacity had a 60% capacity factor which is shed. These costs provide an indication of the high stakes economically and financially viable. associated with further development of China’s rivers, rather than • No nuclear capacity was permitted. a monetization of these costs. International River’s work for this research was supported by The analysis of the variability of supply from hydropower relies on Rockfeller Brothers Fund. We are also grateful to Entri for its a comparison of published data on the installed capacity and contribution to our research. www.internationalrivers.org Design by KnowStudio.com.
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