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If you have net metering it is basically never worth installing batteries unless you are looking to be able to run during a power outage. Net metering turns the
by sbradford26 4y ago
If you have net metering it is basically never worth installing batteries unless you are looking to be able to run during a power outage. Net metering turns the grid into an infinite battery so every kWh you generate offsets your overall usage.
- hnburnsy 4y agoSorry I meant without net metering, the article says... >It will also provide a much stronger incentive for solar owners to use as much of the power they generate as they can — or to install batteries that can store excess power for use after the sun goes down Seems likely a smaller system is a choice too.
- sbradford26 4y agoWith the style of net meter in the article is makes sense to install a battery because it allows you to sell back power during the times you get the full rate. But yes otherwise you are right the return on investment will benefit smaller systems. Since any additional power would simply be wasted. Now the new standards typically don't fully get rid of paying for additional power. So it is probably still best to build a system that covers your power usage for most of the year and get a small benefit when it is over producing.
- drewnick 4y agoI have NEM 2.0 and 25 kWh of batteries. They'll be "paid for" in about 5 years because I load shift from $.81/kWh to $.15/kWh in summer. For example, during peak, my system will feed 100% of my solar back at the $.81 rate and then charge back during the $.15 off-peak. Penciling it out, this saves me an average of $12/day in charges. 5.4 years and then I saved more than I paid AND have whole home backup AND continue to save ~$300/mo. Two EV household, multiple kids, etc. We use more juice than we should.