Taking the Lithium Ferro Phosphate Cure

After a little over 12 years of service, a few weeks ago we replaced the two monster lead acid battery packs of our solar electric system with a deceivingly petite set of lithium ferro phosphate (LFP) batteries. The change felt somewhat comparable to trading in a lumbering, gas-guzzling—but familiar—2009 Crown Victoria for a snazzier set of …

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Buy more panels and call me in the morning

After several suggestions and theories--from two installers, an electrician, Stew, various blog readers, friends, and equipment manufacturers, among others--it turns out that Stew's German orthopedic surgeon-cum-solar energy wizard was right all along. We don't have enough panels in our array to keep us going through the shorter days of winter. Doktor Schmidt says his house …

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