A new battery microgrid in Trenton, Florida, could keep the lights on for 1,500 customers when the main grid goes down.

For residents in hurricane-prone parts of the state, that kind of backup can mean fewer spoiled groceries, less downtime for businesses, and more reliable power for essential services.

Here's what to know

According to a Duke Energy news release, an 11-megawatt lithium battery site in Gilchrist County, about 30 miles west of Gainesville, is the company's second large-scale facility set up to provide direct backup to a local community. During an outage, it can supply nearby customers with electricity for up to four hours.

Placed in service in 2022, the facility was meant to store power, ease demand on the system, and postpone grid work. It has been upgraded into a microgrid that can detect an outage, disconnect from the main electric network, and keep serving the surrounding area.

Rather than acting only as a storage asset, the battery can operate as shared backup power for the community. That setup can shorten some of the worst storm-related disruptions for homes and businesses and help the area recover more quickly.

For homeowners without access to a nearby utility-scale solution, adding battery storage is one of the best ways to protect a home during outages, save money on energy, and create more flexibility if you want backup power independent of the grid. 

It may be worth exploring EnergySage to get information about home battery storage options, including competitive installation estimates. 

EnergySage has teamed up with the electrification brand Qmerit to guarantee you get the best price on home battery storage solutions. Another option is Pila, whose plug-and-play batteries are priced at a fraction of what whole-home backup systems cost.

More background

Duke Energy Florida's first microgrid in the state was in Micanopy in Alachua County. The utility says it now has six battery storage sites across Florida, keeping electricity in reserve for times when demand surges.

"We are continually making smart grid investments to improve reliability for our customers while keeping costs as low as possible," said Melissa Seixas, Duke Energy Florida state president. "This second microgrid in Trenton lets us supply backup power directly to the local community, helping to keep our customers powered when they need it most."

Battery systems can do more than respond to blackouts. They can help utilities smooth out demand spikes, reduce strain on the grid, and avoid expensive infrastructure upgrades. Those savings can benefit both companies and customers.

Duke said it had also strengthened the grid in other ways. The company noted over 82% of customers are served by self-healing technology, roughly half of the distribution system is underground, and 60% of wooden transmission poles have been replaced with those made of stronger materials.

The point of those upgrades is to prevent millions of outage minutes each year.

What's being done?

The strategy combines stronger physical infrastructure with smarter technology. Underground lines are less exposed to wind and debris, self-healing systems can reroute power automatically, and batteries can step in as localized backup when the grid runs into trouble.

Community-scale battery projects show how stored electricity can serve people directly, not just support grid operators behind the scenes. 

When a battery can keep a town running for hours, it gives crews time to make repairs while reducing disruption for families, schools, and local businesses.

Where can I learn more?

Florida's battery projects are part of a much bigger push to use stored power as backup when the grid is strained. Utilities, battery companies, and homeowners are putting that idea to work, from neighborhood microgrids to home energy systems.

• In Puerto Rico, Sonnen is linking home batteries to what could be the first virtual power plant.

• Sonnen is also building battery-backed home energy networks that can support renewable power beyond individual houses.

• SunPower and Palmetto are helping homeowners install home backup batteries without steep upfront costs.

• Jackery has unveiled a home battery system with automatic fire suppression and 100 safeguards.

• As costs fall, home batteries can cut utility bills while storing extra solar power.

Battery storage is playing a bigger role in outage planning, and the importance of that shift is easy to see when you consider how backup power can help at the household level or keep a community running when the grid goes down.

Get TCD's free newsletters for easy tips, smart advice, and a chance to earn $5,000 toward home upgrades. To see more stories like this one, change your Google preferences here.