Energy storage for solar at record high interest and record low prices
The report notes a few key reasons why energy storage has become increasingly sought after. In the last year, storage prices have fallen 16 percent, setting a new all-time low.
Solar batteries let you keep your lights on even when your local power grid is down. However, battery storage typically costs between $7,000 and $18,000. If you live in an area with frequent power outages, a solar energy storage battery is worth considering. Other equipment also factors into the overall price:
As of 2025, the average cost of residential solar panels in the U.S. is between $15,000 and $25,000 before incentives. This typically translates to about $2.50 to $3.50 per watt of installed capacity (more on price per watt below). The total price depends on your system size, location, roof type, and installer.
Another measure of the relative cost of solar energy is its price per kilowatt-hour (kWh). Whereas the price per watt considers the solar system's size, the price per kWh shows the price of the solar system per unit of energy it produces over a given period of time. Net cost of the system / lifetime output = cost per kilowatt hour
On the high end, we talked to a solar customer in Hawaii who spent $100,000 going solar. Dion in Nevada said their 10-kW system cost about $20,000, which is about the national average price for a 7-kW system. What else affects solar installation costs?
PDF version includes complete article with source references.
Get technical specifications, European subsidy information, and ROI analysis tools for peak shaving and container energy storage solutions.
ul. Technologii 15, Park Przemysłowy
geochojnice.pl, Poland
Office: +48 22 525 6683
Technical: +48 189 486 173
Monday - Friday: 8:00 AM - 6:00 PM CET