File:CO2 per kWh for different sources.png

Summary
Amount of greenhouse gases (as equivalent grams of CO₂) produced by different power plants per kWh of energy produced, in order of medians from worst to best.

Data from Wikipedia's Life-cycle greenhouse-gas emissions of energy sources, which in turn is from IPCC 2014 with some artistic license by me:


 * Combined both types of wind
 * Combined both types of solar PV
 * Combined all 4 types of CCS and called it "wp:Clean coal" (since CCS is on that page)
 * Abbreviated labels so they didn't need to be at an angle
 * Geo = geothermal
 * CSP = wp:Concentrated solar power
 * PV = wp:Photovoltaic power station
 * Bars are median, error bars are min and max (hydro goes up to 2200, probably from the huge amounts of methane produced when you drown an entire countryside and it rots underwater)

Data
Technology	Min	Median	Max Coal		740	820	910 Gas		410	490	650 Biomass		130	230	420 Clean coal	94	188	340 Solar PV	18	45	180 Geo		6	38	79 Solar CSP	9	27	63 Hydro		1	24	2200 Ocean		6	17	28 Nuclear		4	12	110 Wind		7	12	56