... A1G)A1TNakicenovicNakicenovicIIASA 20 03IIASA 20 03 25 20 1510501800 1900 20 00 21 00 22 00S450GtCS550S650 25 20 1510501800 1900 20 00 21 00 22 00S450GtCS550S650WGIWREStabilizationat 450, 550, 650ppmv CO 2 S450S550S650trajectoryB2B2B1B1A2A235 ... conventional 97 2. 7 120 120 24 0Unconventional 6 0 .2 120 320 440 120 0Gas conventional 36 1 .2 90 170 26 0Unconventional 1 – 140 530 670 12, 200Coal 155 2. 4 530 4 620 5150 3600Total 29 5 6.5 1000 ... biopower 25 %, geothermal 10%,PV5%,and solar thermal 5%. The result was the addition of 150 GWe of non-hydro renewables by 20 20—15% of total capacity in 20 20. In 20 12, the highest cost year, the...