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Re: California 'green ' produced 21% of peak power Oct 17 I wish I could reconcile the numbers from different sites. California "green" per the CA ISO web site, includes wind, solar, geothermal, biomass and small hydro. The EIA shows YTD for CA - electricity production from renewables excluding hydro as 27.5%. If you throw in some estimate for small hydro (the EIA shows conventional hydro and "pumped storage" hydro, but not "small"), you're probably somewhere around 30% so the 21% number for October 17 actually sounds low. And, if you take the EIA numbers and include all hydro in the renewables category, CA is over 50% from renewables. I wonder why ISO doesn't include all hydro in their numbers? The 2 sites show similar relationships for the various sources (like solar is about 2X wind) so I think they are agreeing on the measurements and they sound reasonable. But the puzzling thing on the EIA web site is that CA's total electricity production is 141,778 (billions/trillions/millions of kwh? I'm not sure). Whatever the stat is, TX is at 304,195, more than 2X CA. The vast majority of TX's production is not utilities, but rather independent power producers so maybe some gets "exported" to other states?. Even FL has total production of 160,411. Maybe it's all that air conditioning? Even PA has almost as much electricity production as CA. Considering the differences in population, there's something in the numbers that I don't understand. Anyway the trend in CA is away from natural gas (CA basically doesn't use coal) to renewables. |
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