Wildfire and battery fire are the same problem seen from opposite sides of the fence. Ember Guard handles both with one system.
Satellite fire data and weather forecasts tell us when a fire could reach the site. Before it arrives, the perimeter wets the buffer and the surfaces embers land on, so embers die at the fence line.
If a battery unit catches fire, exposure cooling and the treated buffer stop it spreading to the units beside it or the dry land beyond the fence, while the fire service gets a live feed.
Ember Guard acts on what a fire is about to do, so protection is in place before the first ember lands.
We track active fires and fire weather around every site, day and night, using satellite fire data and forecasts.
For each site we estimate when a fire could arrive, so the system acts on a forecast instead of waiting for smoke at the gate.
Ahead of arrival the perimeter wets the buffer and ember-exposed surfaces, and the fire service gets a live link. Water is used only when a fire is coming.
Every forecast, trigger, test and maintenance visit is logged in a record built for fire authorities and insurers.
Counties, fire authorities and insurers are asking every new battery site the same question: what happens when fire comes?
At least 96 US battery projects, about 25 GW in total, have faced public pushback.
Source: Energy TechOrange County now bans battery sites in Very High fire hazard zones, and San Benito County has adopted a moratorium of up to 10 months on large projects.
The risk runs both ways. A wildfire can burn into a site, and a battery fire can burn out of one, as at Moss Landing in January 2025.
Source: CalMattersCalifornia insurers must now reward wildfire mitigation on commercial property.
Source: California Department of InsuranceDevelopers need the permit, owners need uptime and insurers need proof. One perimeter gives each of them what they ask for.
A fire plan and permit package written for the county and the fire authority, so fire stops being the reason a project stalls.
Monitoring, triggering and maintenance on one subscription, around the clock. Water is used only when a fire is forecast to arrive.
A record of every forecast, trigger, test and service visit, ready for the mitigation discounts California insurers must now offer on commercial property.
Starting with battery sites in California and the US South-West, then Southern Europe.
We're a Cambridge engineering team speaking with developers, operators, fire authorities and insurers now. If you run or are building a site in fire country, we'd like to hear what it took to get it permitted and insured.