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Do battery storage systems pay off in the long run? You can use the energy you’ve generated from solar during the day at night – thus saving money because you’re operating off-grid. If your utility charges time of use rates (TOU), which cost you more for electricity at peak power usage times, you can use the energy stored in your battery instead of pulling from the grid when electricity is priciest. In addition, some utility companies offer net metering, meaning you sell your unused energy back to your utility company to earn credits toward your bill. You’ll have to weigh the upfront costs with potential savings in the long-run, but some manufacturers say you can reduce energy costs by up to 80% due to utility cost savings.