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High winds in October and March blew down many solar panels in a field in Shaftsbury, Vt., and regulators are now looking into the potential environmental impact of the damaged panels.

This is one of the first times in Vermont that large swaths of damaged panels containing lead and silver have raised the specter of environmental contamination and prompted the state to examine the issue. In this case, concerns grew partly because the fallen panels weren’t immediately cleaned up, state officials said in a recent filing, causing regulators to investigate potential environmental impacts.

In a recent filing to the Public Utility Commission, an Agency of Agriculture, Food and Markets staff attorney wrote that the agency is looking into options for testing the soil to determine if contamination is a concern.

“In general, it is important to protect agricultural soils,” an agency spokesman, Trevor Audet, wrote in a statement. “We are not aware of broken solar panels being a common issue in Vermont, but our knowledge is imperfect under the current reporting framework and we are working to learn more about any potential impacts.”

The damaged panels have caught the attention of environmentalists in the area. Among what they are seeking is pre-testing of soil near solar developments, so there will be a baseline to measure against for possible contamination.

Shaftsbury resident and farmer Jesse McDougall wrote to the Public Utility Commission expressing concern about whether Vermont’s acidic, low pH rain, winter snowmelt and spring showers could compound environmental contamination onsite. McDougall also alleged there were two fires after the October blowdown event.

“I want to see the right steps taken,” McDougall said in an interview. “There were hundreds of panels down, many of them smashed and broken, and on the ground for six months through a Vermont winter and two giant wind events and two fires.”

The solar array is near another controversial planned solar site in Shaftsbury approved by the commission last October, though neighbors to the project appealed the decision to the Vermont Supreme Court.

Approved by the Public Utility Commission in 2022, the broken solar array, called ER Waite Cemetery Solar LLC, is licensed for 2.2 megawatts, the largest energy development allowed under a state program that facilitates long-term contracts and sets rates for renewable energy developments in Vermont.

Encore Renewable Energy planned and received a permit for the solar project, which Fusion Renewable then purchased. Fusion Renewable is now responsible for remediation at the site, wrote Jeffrey Polubinski, attorney for ER Waite Cemetery Solar.

The owner said the delay in site cleanup was due to the lag time in insurance approval. Then Fusion Renewable needed to pause any project work until April due to a deer wintering area near the site, according to a May 8 filing by the Department of Public Service.

The regulatory filing raised questions about work on the site, and the Department of Public Service filing included requests for information about the damage and remediation to see if there is more work to be done, if the owner violated terms of the contract or if there were impacts to rate payers.

An Agency of Natural Resources filing to the commission stated that the owner must dispose of panels as hazardous materials, given the silver and lead inside them.

In addition, the Agency of Agriculture, Food and Markets said it is investigating options for agricultural soil testing in areas the state has designated as important farmland, according to a recent filing to the commission. In his statement, Audet wrote that the remediation method will depend on the scope and type of potential contamination found.

Meanwhile, some research on the environmental impact of damaged solar panels says that the impacts are likely to be minimal, but stronger standards and practices for solar developments may be necessary.

Annick Anctil, a Michigan State University civil and environmental engineering professor, said in an interview that pre-testing soil before construction can help determine whether broken solar panels have caused increased levels of heavy metals in the soil.

Annette Smith, executive director of Vermonters for a Clean Environment, said that, in addition to pre-testing soil, she wants more state-level tracking of solar array failures to prevent this type of situation from happening in the future.

“We could have all of the solar projects in Vermont fail, and I don’t know that there would be any ramifications,” Smith said.

For the solar owner’s part, Polubinski wrote that the owner is working with the state to dispose of the solar panels, and they plan to detail the damage, the current and future remediation of impacts from the wind damage and subsequent fires.

Peter Sterling, executive director of the trade association Renewable Energy Vermont, maintains that the state has more than 100 solar arrays and that solar array failures are rare. Still, Sterling said the state’s examination of the issue shows “the process is working, which is good.”

This story was republished with permission from VtDigger, which offers its reporting at no cost to local news organizations through its Community News Sharing Project. To learn more, visit vtdigger.org/community-news-sharing-project.

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