Agricultural Solar Installations in Maryland

Agricultural solar installations sit at the intersection of farmland productivity, energy economics, and state land-use policy in Maryland. This page covers the definition and regulatory scope of agrivoltaic and ground-mount solar systems on agricultural land, how these systems are structured and interconnected, the scenarios where farms deploy solar, and the decision factors that determine which approach fits a given parcel. Understanding these boundaries matters because Maryland's farmland preservation programs and Public Service Commission oversight both impose constraints that do not apply to commercial or residential rooftop installations.

Definition and scope

Agricultural solar refers to photovoltaic (PV) systems installed on land classified as agricultural under Maryland's tax and land-use codes, including ground-mount arrays, rooftop systems on barns and farm structures, and agrivoltaic configurations that combine crop or livestock production with solar generation on the same ground footprint. The Maryland Department of Agriculture (MDA) and the Maryland Agricultural Land Preservation Foundation (MALPF) govern whether solar development is compatible with existing agricultural preservation easements. Land enrolled in a MALPF easement is subject to restrictions that may prohibit or limit the footprint of ground-mount solar, depending on easement terms recorded at the county level.

Agrivoltaic systems — where panels are elevated or spaced to allow simultaneous crop cultivation, pollinator habitat, or grazing beneath the array — represent a distinct classification from purely energy-production ground mounts. The distinction carries regulatory and programmatic consequences under the Maryland Department of Natural Resources (DNR) and county zoning ordinances.

Scope of this page: Coverage applies to Maryland-situated agricultural properties subject to state and county jurisdiction. Federal programs such as the USDA Rural Energy for America Program (REAP) grants are referenced for context but are not administered by state agencies covered here. Transactions, easements, or installations located outside Maryland are not covered. This page does not address commercial solar installation in Maryland on non-agricultural land, which follows a separate permitting track.

How it works

Agricultural solar systems in Maryland follow the same fundamental generation and interconnection mechanics described in the conceptual overview of how Maryland solar energy systems work. The distinguishing operational elements on farm properties involve larger DC array sizes, longer distribution lines from array to meter, and the need to coordinate with agricultural operations for equipment access and crop protection.

A standard ground-mount agricultural installation proceeds through these phases:

1. Site assessment — Soil classification, shading analysis, and slope evaluation. The Natural Resources Conservation Service (NRCS) prime farmland designations affect local zoning review in counties such as Frederick and Carroll.
2. Easement and deed review — Title search for MALPF, Maryland Environmental Trust (MET), or county agricultural preservation easements that restrict impervious surface or non-agricultural use.
3. County zoning and special-exception permits — Agricultural solar is treated as a conditional or special use in most Maryland counties. Anne Arundel, Baltimore, and Montgomery counties each publish distinct solar overlay or agricultural zoning standards.
4. Utility interconnection application — Submitted to the serving distribution utility (Pepco, BGE, Delmarva Power, or Potomac Edison) under rules overseen by the Maryland Public Service Commission (PSC).
5. State electrical and building inspection — Maryland State Fire Marshal and county building departments inspect wiring, racking, and structural attachments under the National Electrical Code (NEC) and Maryland Building Performance Standards.
6. Net metering or wholesale interconnection election — Systems up to 2 MW AC may qualify for net energy metering under Maryland's net metering framework; systems above that threshold interconnect under separate FERC and PSC tariff rules.

The regulatory context for Maryland solar energy systems provides the full statutory and administrative framework, including the Maryland Renewable Portfolio Standard (RPS) under the Maryland Code, Public Utilities Article, §7-701 et seq.

Common scenarios

Barn and outbuilding rooftop systems are the lowest-conflict agricultural solar type. Array sizes typically range from 10 kW to 100 kW. These installations do not trigger farmland preservation reviews because no ground is removed from agricultural use. NEC Article 690 and structural loading analysis under ASCE 7 govern design.

Ground-mount arrays on non-preserved cropland range from 100 kW to multi-megawatt scale. These require county special-use approval and an environmental review if the parcel is larger than 20 acres in jurisdictions that have adopted the Maryland Model Solar Zoning Ordinance guidance issued by the Maryland Energy Administration (MEA).

Agrivoltaic configurations elevate panels to a minimum clearance (commonly 2.5 to 3 meters) to allow equipment passage and maintain crop light availability. Research at institutions such as the University of Maryland Extension has documented yield retention rates for shade-tolerant crops in agrivoltaic settings. Pollinator-friendly ground cover under arrays can qualify sites for Maryland's Solar Renewable Energy Credits (SRECs) under enhanced environmental attributes recognized by the PSC.

Community solar on agricultural land places a subscriber-based solar facility on a farm, with electricity credited to off-site subscribers. The Maryland community solar program administered through the PSC allows this structure; however, the host property's agricultural status and any easement restrictions must be resolved before PSC approval.

Decision boundaries

The primary decision fork is whether the parcel carries a preservation easement. Easement-encumbered land generally limits ground-mount solar to accessory-scale systems or prohibits it outright, directing farms toward rooftop or agrivoltaic configurations. Non-encumbered agricultural land faces county zoning review as the controlling gate.

A second boundary is system size relative to on-farm load. Systems sized to offset farm consumption qualify for net metering and retain agricultural use designations more easily than oversized export-oriented arrays, which counties may classify as industrial energy facilities rather than agricultural accessory uses.

A third boundary involves solar financing options: farms pursuing USDA REAP grants must meet eligibility thresholds (at least 50% of gross income from agricultural operations) and complete federal environmental review under the National Environmental Policy Act (NEPA), a requirement absent from state-only funded projects.

Safety classification under NEC 690 and OSHA 29 CFR 1926 Subpart K (electrical safety) applies to installation crews regardless of farm setting. The Maryland solar authority home resource provides orientation to the full range of topics intersecting with state solar policy.

References

• Maryland Agricultural Land Preservation Foundation (MALPF)
• Maryland Department of Agriculture (MDA)
• Maryland Energy Administration (MEA) — Solar Resources
• Maryland Public Service Commission (PSC)
• Maryland Code, Public Utilities Article, §7-701 (Maryland RPS)
• USDA Rural Energy for America Program (REAP)
• Natural Resources Conservation Service (NRCS) — Prime Farmland
• National Electrical Code (NEC) Article 690 — Photovoltaic Systems
• Maryland Department of Natural Resources (DNR)
• OSHA 29 CFR 1926 Subpart K — Electrical Safety