Question and Submission History

Three things are in progress. The Emergency Action Plan covers the response. The draft Community Benefits Plan proposes testing private wells within 1,000 feet of the work limit at the project's cost, with bottled water within 48 hours if a test shows a change linked to the site. It also proposes a payment if a home within 1,000 feet sells for less than an independent appraisal says it is worth without the facility. These are drafts and not promises yet.

The draft Community Benefits Plan proposes that if a home within 1,000 feet of the work limit sells for less than an independent appraisal says it is worth without the facility, the project pays the difference, up to a cap that is still to be set, for five years after commercial operation. This is a draft and not yet a commitment. Separately, the project has offered a property value study by a Massachusetts-licensed appraiser, comparing properties near comparable operating projects with similar properties farther away, published so residents can review the evidence directly.

Water use, wastewater, and chemical storage. Water use details have not been published. The facility is not a power plant and is not expected to need an ongoing supply from the town's drinking water for normal operation. Wastewater and chemical storage information has not been published. The only significant liquid in each battery unit is the coolant in its cooling system, and the coolant type has not been specified. The hydrology and stormwater studies are committed and will be published.

Stormwater, wells, and aquifers. The design being developed uses basins sized for storm events, with a commitment to no net increase in runoff and no wetland fill. A hydrogeologic study with a well inventory is underway. The draft Community Benefits Plan proposes testing wells within 1,000 feet of the work limit, with baseline testing before construction and retesting during and after it.

Emergency response. The Emergency Action Plan is being built with Charlton Fire and will be reviewed by an independent reviewer the town selects and the project pays for. It is not published yet.

Independent review and monitoring. The Energy Facilities Siting Board conducts the state review, which includes public hearings and environmental review. An independent third-party review of the Emergency Action Plan is committed. A separate independent review of the groundwater study has not been committed. Groundwater monitoring at the site is committed, with its terms in writing before construction. The state's Intervenor Support Grant Program, up to $150,000 per group for each proceeding, can pay for expert witnesses.

Financial assurance and accountability. A decommissioning bond is required before construction and stays with the project through any change of ownership. Pollution liability insurance is to be carried during construction and operation, and Massachusetts law keeps cleanup responsibility with the site's owner. Permit conditions bind any future owner. The decommissioning bond covers removal and restoration so the cost does not fall to the town.

The process. The project is in the state's required pre-filing engagement phase, with public meetings, a Citizen Advisory Committee, published records, and a comment period on the draft Community Benefits Plan that runs into 2027. Every comment receives a written response. A cumulative impact analysis, which looks at what is already in the area, is part of the state process and is in preparation.

Research on battery storage and property values is still emerging. Based on current data, properly screened and set-back facilities have shown negligible impact, but no Charlton data exists yet. The project has offered a property value study by a Massachusetts-licensed appraiser, comparing properties near comparable operating projects with similar properties farther away, published so residents can review the evidence. The draft Community Benefits Plan also proposes that if a home within 1,000 feet of the work limit sells for less than an independent appraisal says it is worth without the facility, the project pays the difference, up to a cap still to be set, for five years after the facility begins operating. This is a draft and not a promise. Benefits to Charlton are being shaped through the Community Benefits Plan, which has 34 open decisions.