Power demand is up. So are bills.

See if a battery could help at your address.

Or send your bills and get your number

Free. Takes ten seconds. See your utility, outages, and nearby plants in federal records.

How to read this map Dots mark power plants. Bigger dots can produce more power, and orange marks the largest. Lines carry electricity across the country. Orange lines have the highest voltage.

What's happening

Demand is growing again

PJM projects about 3.6 percent annual demand growth for the next decade.

Costs are going up. So are bills.

PJM's wholesale capacity price rose roughly 11× from 2024 to 2026. US residential electricity prices rose about 30 percent from 2020 to 2025.

How a battery helps

Send your bills. Get your number.

Send one or more recent bills. We'll read them and reply in a business day with what a battery would save at your address.

If a battery makes sense, the monthly fee is set below what it saves.

We use your bill only to prepare your estimate. Email hello@mainstay.energy to ask us to delete it.

We only reply about your bill.