![]() ![]() The other main option for an electricity rate is a variable-rate plan – for these, it’s important to make sure at a bare minimum that you have enough storage capacity to ride out the high-cost times of day. The more you can store from your solar panels and use later, the better your long-term savings will be. Generally, on a flat-rate structure, you’ll want enough storage capacity to rely on the grid as little as possible. If you want to save as much money on electricity as possible with solar batteries, you’ll need to know what your electricity rate plan looks like. Designing a solar battery system for saving money ![]() There are three general ways you can optimize a battery system: for saving the most money, for resiliency, or for self-sufficiency. For starters, you can get to many different final answers based on what you actually want out of a solar-plus-storage system. Unfortunately, the answer to the question “how many solar batteries do I need?” is rarely straightforward. ![]() The number of batteries you need depends on what you want Whatever your motivation for adding solar and storage to your property, you can sign up on the EnergySage Marketplace to get started comparing solar-plus-storage quotes for free. If you want to go off-grid completely, you’ll need far more storage capacity, more along the lines of 8-12 batteries.If you want to keep the power on when the grid is down, you’ll usually just need one solar battery.If you want to save the most money possible, you’ll need enough battery storage to cover your energy usage when your solar panels aren’t producing – somewhere around 2-3 batteries.Considering that the average solar battery is roughly 10 kilowatt-hours (kWh) in size: ![]()
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