Caroline County supervisors adopt zoning changes for solar panels and battery storage, set half-mile notice and technical standards

Caroline County — The Board of Supervisors on June 23 adopted a text amendment to the county zoning ordinance that updates rules for solar energy projects and battery energy storage systems (text amendment 03206). Miss Hughes moved to adopt the amendment with the Planning Commission and staff recommendations and Mr. Black seconded; the measure passed unanimously, 6-0.

Planner and staff presenter Mr. Hughes told the board the draft incorporates prior board comments and Planning Commission recommendations and adds multiple technical definitions. “A new definition was added for battery condition,” he said, describing it as “a measurement of a battery's current capacity and performance capabilities compared to when it was brand new.” The ordinance also adds definitions for state of charge, state of health, battery monitoring and several types of energy storage systems (chemical, thermal, electrochemical, mechanical, electrical).

Why it matters: The ordinance bundles several substantive changes intended to govern siting and operations of solar and battery facilities in unincorporated Caroline County. Key provisions agreed by the board include a mailed-notice radius, noise-measurement rules, inverter orientation and sound attenuation, decommissioning requirements and financial guarantees.

Among the specific changes the board approved: a requirement that applicants notify property owners within a half-mile of a project’s property edge and that the applicant also run a countywide public notice (the county website and the Carolina Alert system were discussed as additional outreach measures). On noise, the ordinance requires a pre- and post-construction noise study at identical boundary locations and sets a 55-decibel cap at the project perimeter.

The board adopted requirements that inverters “shall be oriented towards the interior of the site and shall be equipped with sound attenuation that at a minimum focuses sound internal to the project,” language the board added to address low-frequency propagation concerns. Staff also proposed — and the board accepted — an appendix drawn from NFPA 855 as a technical monitoring guide for battery facilities.

Decommissioning was a focus of the discussion. The ordinance will include a county-created template for a decommissioning agreement that applicants must complete and submit for review. The board debated allowable financial guarantees (bond, irrevocable letter of credit, cash or trust) and the practicalities of accessing a bond in bankruptcy proceedings. Board members raised concerns that bonds can require legal action to access; staff said bonds typically carry ongoing premiums and must be renewed periodically. The board chose to retain bond options while clarifying review and renewal expectations.

The ordinance also adds a roadway condition assessment requirement to document pre-construction road conditions and tie repair responsibilities to the applicant, to be agreed with VDOT. For community meetings and battery projects, staff and supervisors agreed the same half-mile mailed notice and general-circulation notice would apply, noting the public-health implications of battery storage (smoke plume and emergency considerations).

Vote and next steps: The motion to adopt passed unanimously, 6-0. With adoption, the ordinance edits become county policy as provided for in the motion; staff will finalize the ordinance text and the proposed NFPA 855 appendix and manage implementation tasks such as the decommissioning-form template and associated review procedures. Projects seeking special-exception approval for batteries will still come before the Planning Commission and Board per the ordinance.

The board signaled that staff should return with any necessary refinements and that the Planning Commission’s recommendations are incorporated. The board recessed to a later work session date to continue related coordination.