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Renewable Energy for conviviality: some experiences from Thailand Chris Greacen Palang Thai Eco-Village Training 20 December 2007 Mu Ban Dek, Kanchanburi
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Palang Thai พลังไท –We teach hands-on energy technology –We draft policies –We critique wasteful & dangerous mega- projects พลัง (palang): n 1. Power. 2. Empowerment. ไท (thai): adj. 1. Independence. 2. Self-reliance
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Conviviality Con: “with” Vivre: “life”
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Conviviality Con: “with” Vivre: “life” As individuals, as communities, as a species… how can we live in harmony with nature/divine?
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Conviviality Con: “with” Vivre: “life” As individuals, as communities, as a species… how can we live in harmony with nature/divine? "Nature has enough for our need, but not enough for our greed." -- Ghandi
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Conviviality Con: “with” Vivre: “life” As individuals, as communities, as a species… how can we live in harmony with nature/divine? "Nature has enough for our need, but not enough for our greed.“ Renewable energy is not enough… we need to address consumption
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What is Renewable Energy? Renewable: harnesses energy flows in nature in ways that do not deplete those flows. Fossil: use it, and it is gone…
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Global Warming Source of picture: bbc.co.uk กรีนแลนด์ บริเวณขั้ว โลกเหนือ Ice melting areas Albedo Effect
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Natural gas Used to make 71% of Thailand’s electricity (among highest in world) Cleaner than other fossil fuels (especially SO x ) but still big CO 2 emissions Limited domestic supply. Human rights issues in pipeline from Burma (Yadana) LNG terminal
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Natural gas Severe price volatility – linked to crude oil price. Now around $0.05 to $0.07 / kWh
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Coal Used to make 14% of Thailand’s electricity History of respiratory illnesses from coal smoke – Mae Mot, Lampang Acid rain Worst fuel for global warming Limited domestic supply Cheaper (now) than natural gas ($0.04 to $0.06/kWh) Strong environmental opposition
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Big hydro Used to make 6% of Thailand’s electricity Consensus: no more big dams will be built in Thailand –Limited sites left in Thailand –Strong environmental opposition Environmental issues –Inundation –Fish killed –Global warming –Changes in temperature / sediment loading / flow regime Can be cheap –If reasonably close to load centers
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Nuclear In 2007 PDP starting year 2020 Cost uncertain –$0.02 to $0.12/kWh Environment & security issues –Generates materials that can be used to make weapons –Thailand has spotty nuclear safety record already –Waste dangerous for thousands of years.
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Typical electricity source in remote areas: diesel
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Can we imagine something different?
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Renewables worldwide About 20% of all power sector investment is now in renewables
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13.7 km Solar 0.037% of Thailand area 100% peak load (22,586 MW) TESCO Lotus, Rama I, 460 kWp, Cost: 75,165,000 baht World-wide 2006: 6,000 MWp cumulative 2007: >9,000 MWp cumulative The fastest growing energy technology in the world is grid-connected solar photovoltaic (PV), growing by 60% per year from 2000–2004.
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Thai population: 65,069,000 Person per household: 5 Households: 13,014,000 System size: 3 kW If 58% of households 100% of peak load VSPP subsidy: 8 baht / kWh Solar 3 kW = 660,000 baht
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Thai solar home systems 203,000 solar home systems Sustainability challenge
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Ruggedized solar electric systems built by Karen medics in 3-5 day hands-on trainings 8 trainings (2003-2007) www.bget.orgwww.bget.org >100 medics trained 37 clinics
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Solar for computer training centers in seven Karen refugee camps 1 kW PV hybrid with diesel generator Each powers 12 computers
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Wind Hundreds of watts to 5 MW per turbine Now over 18,000 MW in Germany Denmark gets >17% electricity from wind At windy site, US 5 cents/kWh (1.65 baht/kWh) In Thailand: 6 baht/kWh (?) VSPP subsidy: 2.5 baht/kWh (3.5?) 1 MW = 35,000,000 baht Thai wind potential: 1600 MW (?)
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28,530 MW = Thailand’s peak load in 2007 Second fastest growing power source world wide. Grew by 28% per year, led by Germany, with over 18 GW installed as of 2005.
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Wind energy – human scale 17.7 baht/kWh 8,200 baht http://natee2007.thaiza.com Thai wind pioneers build wind power themselves.
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Wind for water pumping – salt farms
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1 m 5 m 6 m 4.5 m
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0.5 m
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0.3 m 2 m
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Rice husk fired power plant 9.8 MW Roi Et province VSPP: Subsidy 0.3 baht/kWh
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Uses waste water from cassava to make methane Produces gas for all factory heat (30 MW thermal) + 3 MW of electricity 3 x 1 MW gas generators VSPP: Subsidy 0.3 baht/kWh Korat Waste to Energy - biogas
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Biogas from Pig Farms Reduces air and water pollution Produces fertilizer Produces electricity 8 x 70 kW generator Ratchaburi Subsidy: 0.3 baht/kwh
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Rice husk gasifier Rice mill in Nakorn Sawan 400 kW
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Gasifier electricity from wood
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Biodiesel
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Efficient Charcoal
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Micro-hydro technology Source: Inversin, A. R. (1986). Micro-Hydropower Sourcebook.
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Micro-hydro technology PeltonTurgoCrossflowKaplan Centrifugal pump
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Mae Kam Pong, Chiang Mai DEDE + community 40 kW 4 million baht cost Sell electricity to PEA – 400,000 baht/year VSPP subsidy: 0.8 baht/kWh Thai Potential: 1000s of projects - 700 MW (?)
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Mae Kam Pong, Chiang Mai 2 @ 20 kW Weir: 2 meters high, 15 meter wide Head: 55 meters Households: 190 Cost: 3.99 million baht Constructed in year: 2526 (1983)
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Huai Krating, Tak Power: 3 kW Head: 35 meter Flow: 20 liters/second Cost: <200,000 baht (turbine - 24,500 baht) Constructed: 2548 (2005) Thai Potential: 10,000s of projects – 10s MW (?)
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Kre Khi village, Tak Province 1 kW for school, clinic, church Cost: <150,000 (turbine 10,000) Head: 10 meters Flow: 15 lit/sec
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Mae Klang Luang, Chaing Mai 200 watts 5,000 baht (turbine: 4,000 baht) Installed: 2550 (2007) Head: 1.7 meters
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Hydraulic ram pump www.agr.gc.ca
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Hydraulic ram pump
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Solar cooking
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Biogas for cooking www.bget.org
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Solar water heating
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Thank you For more information, please contact chris@palangthai.org chris@palangthai.org This presentation available at: www.palangthai.org/docs
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1) Remove bias in Thailand’s load forecasting
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Demand growth has been linear over the past 20 years…
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… but “official forecasts” assume exponential growth
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… so they always overestimate actual demand, building power plants that aren’t needed…
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Power Development Plan (Planned installed capacity = peak demand + 15% reserve)
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2) Consider clean, decentralized options on level playing field
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Fuel mix in power generation GWh Import Nuke RE Gas Coal Lignite Hydro
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Saving electricity is cheaper than generating it Source: The World Bank (1993) Demand Side Management (saving electricity) Actual 10-year DSM average cost!!! 1.5
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