Agricultural and Farm Solar Systems in Pennsylvania

Agricultural solar installations occupy a distinct category within Pennsylvania's broader renewable energy landscape, governed by a combination of state utility regulation, federal tax code, and county-level zoning authority. This page covers the definition, mechanics, common deployment scenarios, and key decision boundaries for farm-based solar systems across the Commonwealth — from small barn-roof arrays to large agrivoltaic installations spanning multiple acres. Pennsylvania's agricultural sector, which includes more than 49,000 farms across roughly 7.3 million acres (Pennsylvania Department of Agriculture), presents specific structural, regulatory, and financial conditions that differ substantially from residential or commercial solar contexts.

Definition and scope

Agricultural solar systems in Pennsylvania are photovoltaic or solar thermal installations sited on land classified as agricultural — including active cropland, pasture, woodlot parcels, and farmstead structures such as barns, silos, and equipment sheds. The term encompasses both building-integrated arrays and ground-mounted systems, and it applies whether the farm is a sole proprietorship, partnership, family LLC, or corporate agricultural operation.

A critical classification boundary exists between farm-use solar and utility-scale solar on agricultural land. Farm-use systems are sized primarily to offset on-site electricity consumption — powering irrigation pumps, grain dryers, milking parlors, cold storage, and farm residences. Utility-scale systems installed on farmland by third-party developers, by contrast, are governed primarily by the Pennsylvania Public Utility Commission (PUC) and may require Act 24 of 2020 siting reviews for larger projects. This page focuses on farmer-owned or farmer-leased systems installed for operational energy use, though lease arrangements with developers are addressed in the decision boundaries section.

Scope limitations: Coverage here applies to Pennsylvania state law, Pennsylvania PUC jurisdiction, and county zoning frameworks within the Commonwealth. Federal Investment Tax Credit (ITC) rules under IRC §48 apply nationally and are noted where relevant, but are not administered by any Pennsylvania state agency. Out-of-state farm operations, federally recognized tribal lands, and solar installations on land enrolled in certain federal conservation easements (CRP, RCPP) may face additional or conflicting restrictions not covered here.

How it works

Farm solar systems follow the same fundamental photovoltaic conversion process described in the conceptual overview of how Pennsylvania solar energy systems work, but the integration points differ from residential contexts.

A typical farm installation moves through five discrete phases:

1. Energy audit and load mapping — Identifying farm loads by season (e.g., peak summer irrigation vs. peak winter heating) and matching system capacity to consumption patterns across multiple meters on a single property.
2. Site and structural assessment — Evaluating roof pitch, age, and load-bearing capacity for barn-mounted systems, or conducting soil and drainage surveys for ground-mounted arrays on field margins or fallow parcels.
3. Interconnection application — Filing with the serving electric distribution company (EDC) — PPL Electric, PECO, Met-Ed, or Duquesne Light — under Pennsylvania PUC net metering rules (52 Pa. Code §75).
4. Permitting and inspection — Obtaining electrical and building permits from the county or township authority having jurisdiction (AHJ). Pennsylvania does not have a single statewide building code for agricultural structures; many farm buildings fall outside the Uniform Construction Code (UCC) under Act 45 of 1999, which exempts certain agricultural structures. Electrical installations, however, must still comply with the National Electrical Code (NEC) as adopted by the Pennsylvania Department of Labor & Industry.
5. Commissioning and metering — Final inspection by the AHJ, utility meter upgrade or installation, and activation of net metering or virtual net metering arrangements.

For a detailed view of the regulatory context governing Pennsylvania solar energy systems, including PUC interconnection standards and the Alternative Energy Portfolio Standard (AEPS), that dedicated resource covers the full statutory framework.

Common scenarios

Four deployment patterns account for the majority of agricultural solar installations in Pennsylvania:

Barn and outbuilding roof arrays: South-facing metal roofs on dairy or poultry barns are structurally suited to ballasted or rail-mounted panels. Arrays of 25 kW to 100 kW are common for mid-sized livestock operations. Roof age and load capacity must be assessed before installation because agricultural roofs are frequently excluded from standard structural engineering warranties.

Ground-mounted arrays on field margins: Installing panels on low-productivity field edges, riparian buffers, or retired cropland preserves higher-value tillable acres. The ground-mounted solar systems Pennsylvania page covers siting and structural considerations applicable to these installations.

Agrivoltaic dual-use systems: Agrivoltaic configurations raise panel arrays 8 to 14 feet above ground to allow continued crop production or livestock grazing beneath. Pennsylvania State University's College of Agricultural Sciences has published preliminary data on agrivoltaic suitability under mid-Atlantic solar irradiance levels, noting yield compatibility with shade-tolerant crops including leafy greens and certain small fruits.

Solar-powered irrigation and pumping: Standalone direct-current pump systems powered by dedicated PV arrays are common on vegetable operations and in areas with unreliable grid access. These off-grid configurations do not require utility interconnection and are subject to NEC Article 690 for PV systems and Article 705 for interconnected power production equipment.

Decision boundaries

The most consequential decision for a Pennsylvania farm operator is whether to own the system outright, finance it through a loan or PACE instrument, or lease the land to a third-party solar developer.

Pennsylvania's Solar Renewable Energy Credit (SREC) market (pennsylvania-srec-market) provides revenue streams that are structurally more valuable to owner-operators than to lessees. Farm operators exploring financing structures should review solar financing options in Pennsylvania for loan products specific to agricultural borrowers, including USDA Rural Energy for America Program (REAP) grants, which can cover up to 25% of eligible project costs (USDA REAP, 7 U.S.C. §8107).

Zoning classification is a second critical boundary. Converting prime agricultural soils (as defined by NRCS Soil Capability Classes I and II) to large-scale solar use has triggered opposition under Pennsylvania's Agricultural Area Security Law (Act 43 of 1981), and at least 12 Pennsylvania counties had adopted or proposed solar zoning ordinances restricting utility-scale installations on Class I or II soils as of 2023. Farm-use systems sized to offset on-site loads typically face less restrictive zoning review than commercial generation projects.

Farms enrolled in Pennsylvania's Clean and Green preferential tax assessment program (Pennsylvania Department of Revenue) must evaluate whether solar installations trigger rollback taxes. Ground-mounted systems covering substantial acreage may be deemed a non-qualifying use under Act 319 of 1974, resulting in seven years of retroactive tax liability.

The broader Pennsylvania solar energy systems home resource provides orientation across all system types and use cases, and the net metering in Pennsylvania page details how agricultural multi-meter facilities can aggregate generation credits across a single farm account under PUC rules.

References

• Pennsylvania Department of Agriculture
• Pennsylvania Public Utility Commission — Net Metering Rules, 52 Pa. Code §75
• Pennsylvania Department of Labor & Industry — Uniform Construction Code
• National Electrical Code (NEC), NFPA 70 — Article 690 (Photovoltaic Systems)
• USDA Rural Energy for America Program (REAP), 7 U.S.C. §8107
• Pennsylvania Department of Revenue — Clean and Green (Act 319)
• Pennsylvania Agricultural Area Security Law, Act 43 of 1981 — Pennsylvania General Assembly
• Pennsylvania State University College of Agricultural Sciences
• USDA NRCS — Land Capability Classification