Customers with large generators being paid SLRs. 21.15 per unit for generating their own power . News two days before! Copper indium gallium (di)selenide (CIGS) verified by NREL to be as efficient as 14.6% in 2006, NANOSOLAR POWERSHEET THE NEW DAWN OF SOLAR http://www.popsci.com/popsci/flat/bown/2007/index.html Solar cell Price and production 2009=6700 MW 1234567 ON AVERAGE AROUND THE WORLD, SUNLIGHT DELIVERS A BARREL OF OIL OF ENERGY ON EVERY SQUARE METER OF LAND EVERY YEAR Incoming solar energy to Earth Sri Lanka gets at 6 kWh/m2/day 7000kWh/year Colombo Efficiency (Lumens/Watt) Kerosene Incandescent Bulb Light Emitting Diode (LED) .03 5-18 25-50 Rated Life (Hours) Supply of Kerosene 1000 50,000 Cost per 50,000 hours $1251 $175 $20 Buy power during the night CEB TARIFF Domestic effective from Nov 2008 Fuel Adjustment Charge 30% on all unit charges except DP & RP consumers consuming less than 90 units per month Residential tiered tariff 30.00X1.3=Rs39 25.00X1.3=Rs32.50 16.00X1.3=Rs20.80 Rs7.50 Rs4.70 Rs3.00 Rs 39 Rs39/kWh Technology transfer to rural Sri Lanka . . Annual Savings Before and After . 10000 . 8000 6000 4000 2000 . 20 0 0 1 2 3 4 5 Years 3 Accumulated Net Savings . RS 8000 6000 4000 2000 20 . 0 1 2 3 4 5 6 7 8 9 10 11 12 13 YEAR How Storage will Help Smoothing of Out Put 1 2 3 4 5 6 7 8 9 101 Conversion factor (multiply top row by factor to obtain side column) W/m² kWh/(m²·day) sun hours/day W/m² 1 41.66666 41.66666 kWh/(m²·day ) 0.024 1 1 sun hours/day 0.024 1 1 kWh/m²•y 8.765813 365.2422 365.2422 kWh/kWp/y 6.574360 273.9316 273.9316 kWh/m²•y kWh/kWp/y 0.1140796 0.1521061 0.0027379 0.0036505 0.0027379 0.0036505 1 1.333333 0.75 1 Solar Radiation in W/m sq Efficiency of Solar cells 2009 12345
