Solar batteries can be the most expensive part of your solar project, especially if you plan to go off-grid. When working on a residential solar panel project, you have to decide if you’re going to invest in heavy-duty solar batteries.

If you’re one of the homeowners who have the same question, this blog is for you. We’ll weigh the ROI of solar batteries to determine if they’re worthy investments.

How much are solar batteries?

As of this writing, a 400-watt solar battery costs around $400. For quick reference, this medium-capacity battery is enough to light up a LED light for 200 hours, charge a smartphone 12 times, use a 35w LED television for 4 hours, and power up a 55w electric fan for 3 hours.

In short, they’re best for emergency use.

However, it will be way more expensive if you’re thinking of powering up your entire household with multiple appliances hooked up. It may cost you around $2,000 – $5,000.

How much can you save with the use of solar batteries?

You should go off-grid with your solar project to make the most of your solar batteries. Your solar panel will use an entirely different line from your traditional electricity provider.

Houses that go off-grid with heavy-duty solar batteries can save up to $75,000 on their annual electricity bills. As usual, the bigger the solar project and the capacity of your solar battery is, the more savings you’ll get.

But even for this average cost, you can get an ROI on your first month of using your solar battery. And the best thing is that solar batteries can last up to 15 years.

On the other hand, if you’re uncomfortable going off-grid, you can use your solar battery for emergencies. While you may get ROI for a longer time, nothing beats the peace of mind of having a reliable electricity source in times of need.

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