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These comparisons seem basically meaningless though. What does it tell us that coal is "40%" vs solar being "20%"? Why does that number matter?
by kadoban 4y ago
These comparisons seem basically meaningless though. What does it tell us that coal is "40%" vs solar being "20%"? Why does that number matter?
- tuatoru 4y agoCoal is "40%", less the energy used in mining and transporting the coal, less the energy used in coping disposing of the ash and coping with the environmental and health harms arising from burning coal. For PV, a higher "efficiency" means less land is used for a given nameplate power output. Desert land is not in noticeably short supply, though. Or it might mean that PV is economically feasible in high-latitude or chronically cloudy areas.