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Solar Has Overtaken Gas, Wind As Biggest Source of New US Power (bloomberg.com)
An anonymous reader quotes a report from Bloomberg: Despite tariffs that President Trump imposed on imported panels, the U.S. installed more solar energy than any other source of electricity in the first quarter. Developers installed 2.5 gigawatts of solar in the first quarter, up 13 percent from a year earlier, according to a report Tuesday from the Solar Energy Industries Association and GTM Research. That accounted for 55 percent of all new generation, with solar panels beating new wind and natural gas turbines for a second straight quarter.
The growth came even as tariffs on imported panels threatened to increase costs for developers. Giant fields of solar panels led the growth as community solar projects owned by homeowners and businesses took off. Total installations this year are expected to be 10.8 gigawatts, or about the same as last year, according to GTM. By 2023, annual installations should reach more than 14 gigawatts.
The growth came even as tariffs on imported panels threatened to increase costs for developers. Giant fields of solar panels led the growth as community solar projects owned by homeowners and businesses took off. Total installations this year are expected to be 10.8 gigawatts, or about the same as last year, according to GTM. By 2023, annual installations should reach more than 14 gigawatts.
Solar had the largest share of newly installed capacity. But solar's capacity factor (ratio of actual energy produced to capacity) is abysmal. About 0.145 for the U.S. as a whole, 0.185 for the desert Southwest (these can be improved with panels which track the sun, at the cost of needing more land area). Contrast this with wind (0.2-0.35), hydro (0.4-0.5, mainly because it's used for peaking power rather than base load), natural gas (0.5, also used for peaking load), coal (0.6-0.7), and nuclear (0.9).
Put another way, 1 GW of PV solar capacity is worth about 600 MW of wind capacity, which is worth about 350 MW of hydro capacity, which is worth about 300 MW of natural gas capacity, which is worth about 230 MW of coal capacity, which is worth about 160 MW of nuclear capacity. Comparing power generation on the basis of installed capacity is like trying to eat enough to live based solely on the weight of food you're consuming completely ignoring the different caloric and nutritional content of the different foods.