They do. But they typically last ~8 hours or so.
Yep.
Normally I recommend generators for people who are planning for disasters, specifically propane generators to avoid the fuel-stability problem. But the PG+E (and SDG+E) problems may change the calculus on that. Often when power goes out in Eastern states it's due to weather - storms, very high tides, ice etc. And during those times often you don't have sun and you don't know when the power is coming back, making solar+storage systems questionable. And often you get little warning, or the wrong warnings.
But in California, we are now seeing utilities shut down sections of the grid during some of the sunniest times of year, and there is generally a few days of warning as well as an estimate for how long it will be out. All those things favor solar+storage as backup. And this will just get worse. After the Paradise fire and resulting bankruptcy of PG+E, no utility is going to want to roll the dice on retaining power on high risk days in high risk areas. And as the climate warms, we will have more and more high risk days. Thus, any investment in battery storage is going to have more certainty behind it than a large generator purchase.
When all those people start buying generators, they're going to be very unhappy when it fails to run after sitting in storage for 6 months or a year because of the ethanol.
Normally I recommend generators for people who are planning for disasters, specifically propane generators to avoid the fuel-stability problem. But the PG+E (and SDG+E) problems may change the calculus on that. Often when power goes out in Eastern states it's due to weather - storms, very high tides, ice etc. And during those times often you don't have sun and you don't know when the power is coming back, making solar+storage systems questionable. And often you get little warning, or the wrong warnings.
But in California, we are now seeing utilities shut down sections of the grid during some of the sunniest times of year, and there is generally a few days of warning as well as an estimate for how long it will be out. All those things favor solar+storage as backup. And this will just get worse. After the Paradise fire and resulting bankruptcy of PG+E, no utility is going to want to roll the dice on retaining power on high risk days in high risk areas. And as the climate warms, we will have more and more high risk days. Thus, any investment in battery storage is going to have more certainty behind it than a large generator purchase.
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