But this approach would still consume too much of the CO2 budget. Even the most modern and advanced conventional coal-fired power plants emit over 15 times more CO2 per unit of electricity than renewable energy systems, and more than twice the amount of efficient gas-fired power stations.
WCA呼吁采用“高效能、低排放的煤燃烧技术”以降低全世界煤电厂的温室气体排放。但这一方针仍会消耗太多的二氧化碳预算。即使是最现代、最先进的传统煤电厂，每单位电量二氧化碳排放量也高达可再生能源系统的15倍、高效燃气电厂的两倍多。