Inverter hut fire at Wheelock Tract solar project in Shutesbury prompts permit review
Apr 2026Published 21 Sept 2026Responsible editor: Chief Editor
- Where
- Wheelock Tract solar project, Pratt Corner Road, Shutesbury, Massachusetts
- Operator
- NextEra Energy
- What
- Inverter hut fire on 16 April 2026
- Injuries
- None reported
- Cause
- Not reported
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Companies named in the reporting of this entry (being named is not a finding of fault): NextEra Energy
What happened
On 16 April 2026 an inverter hut caught fire at the Wheelock Tract solar project, a 5.6 megawatt solar development on Pratt Corner Road in Shutesbury, Massachusetts, operated and owned by NextEra Energy, which holds the town special permit. Emergency dispatch was notified at 5.52pm and firefighters located the source of the blaze at 6.28pm. According to a memo from the town fire chief, the immediate aim was to stop the fire spreading beyond the inverter hut, and crews had to wait about an hour for capacitors to be deenergised before applying water to the inverters.
Firefighters remained on site for several hours, eventually opening cabinet doors to confirm the equipment had cooled. No injuries or evacuations were reported in the source. A Planning Board member said that during an August site visit planners learned NextEra Energy representatives had described the company's best practice as not informing first responders of an inverter fire. Town officials are now seeking to reopen the special permit to add conditions on vegetation management, hardscape buffers, emergency access and site monitoring.
Contributing factors
Firefighters reported waiting roughly an hour for capacitors to be deenergised before water could be applied. Officials noted the site's remote location and reliance on a mostly volunteer fire department, and said the fire could have spread beyond the site had it occurred later in the season when grass is longer, or during drought conditions. The cause of ignition was not reported.
Lessons learned
- Operators must inform local fire services of any inverter fire at once, so crews can plan a safe approach without delay.
- Inverter huts need clear documentation on how and how quickly capacitors can be deenergised, because delay extends the fire growth window.
- Remote solar sites should have vegetation management and hardscape buffers around electrical equipment to limit fire spread risk.
More lessons on fire suppression and firefighting, spacing, layout and fire spread, from every incident on the register.
Not yet known
- Cause of the ignition
- Inverter model and age
- Duration of site downtime
- Cost of repairs
This entry is updated when these are reported. Get an alert for the next one like it.
Source
Published 2026-09-21. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.
