Maryland Power Purchase Agreements (PPAs)
A Power Purchase Agreement (PPA) is a financing structure that allows property owners to host solar panels owned by a third party, paying only for the electricity those panels generate rather than purchasing the equipment outright. In Maryland, PPAs operate within a specific regulatory environment shaped by the Maryland Public Service Commission and state contract law. Understanding how PPAs are structured, what distinguishes them from leases and purchases, and where their limitations fall is essential for evaluating Maryland solar financing options across residential, commercial, and institutional contexts.
Definition and scope
A PPA is a long-term electricity sales contract — typically 15 to 25 years — between a solar developer (the seller) and a property owner or tenant (the offtaker). The developer finances, installs, owns, and maintains the solar energy system on the offtaker's property. The offtaker agrees to purchase all or a portion of the electricity generated at a contractually fixed or escalating rate per kilowatt-hour, which is typically set below the local retail utility rate at contract inception.
PPAs are legally distinct from solar leases. Under a lease, the customer pays a fixed monthly amount regardless of energy production. Under a PPA, the payment is tied directly to actual kilowatt-hour output — so low-production months result in lower bills. This distinction carries meaningful financial and tax implications, particularly for commercial entities that may qualify for federal depreciation benefits under the Federal Investment Tax Credit for Maryland residents framework.
Scope and geographic limitations: This page addresses PPAs as they apply to Maryland properties governed by Maryland contract law and regulated by the Maryland Public Service Commission (Maryland PSC). Entities operating across state lines, federal facilities with separate procurement authority, or properties in the District of Columbia or Virginia are not covered by Maryland-specific regulatory provisions discussed here. PPAs involving community solar subscriptions, which operate under distinct statutory authority, are addressed separately at Maryland Community Solar Programs.
How it works
The PPA structure follows a defined sequence of phases:
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Site assessment and qualification — The developer evaluates roof condition, orientation, shading, and structural load capacity. Maryland-specific solar resource data and utility territory (BGE, Pepco, Delmarva, or Potomac Edison) shape production estimates reviewed at solar energy production estimates for Maryland climate.
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Contract execution — Both parties execute the PPA, specifying the per-kWh rate, annual escalator (commonly 1–3% per year), contract term, early termination provisions, and transfer-on-sale conditions.
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Permitting and interconnection — The developer holds responsibility for obtaining building permits from the applicable Maryland county or municipality and submitting interconnection applications to the serving utility under the Maryland PSC's net metering rules. Interconnection requirements are detailed at Maryland utility interconnection requirements.
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Installation and inspection — Installation must comply with the National Electrical Code (NEC), Maryland Building Performance Standards, and local Authority Having Jurisdiction (AHJ) requirements. The developer schedules utility inspection and Permission to Operate (PTO).
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Ongoing operation and billing — The developer monitors system output and invoices the offtaker monthly based on metered generation. The offtaker continues receiving a separate utility bill for grid-supplied electricity beyond what the solar system produces, with net metering credits applied per Maryland Net Metering rules.
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End-of-term options — At contract expiration, typical options include purchase of the system at fair market value, lease extension, or system removal by the developer at no cost to the property owner.
Common scenarios
Residential PPAs are common in owner-occupied single-family homes where upfront capital is constrained. Maryland homeowners in BGE or Pepco service territories have historically seen retail rates high enough to support attractive PPA economics. However, residential PPAs are more restrictive in condominiums and HOA-governed communities — Maryland's solar access statutes limit HOA prohibition of solar installations but do not override deed restrictions outright. See Maryland HOA Rules and Solar Installations for the statutory scope.
Commercial and institutional PPAs are structured for office buildings, nonprofits, schools, and municipal facilities. Nonprofit entities that cannot monetize federal tax credits directly benefit from PPAs because the developer retains the Investment Tax Credit (ITC) — currently 30% under the Inflation Reduction Act (U.S. Department of Energy) — and passes partial savings to the offtaker through lower per-kWh rates.
Agricultural PPAs apply to farms and rural properties. Maryland's agricultural solar landscape intersects with agrivoltaic development, addressed further at agricultural solar installations in Maryland.
Decision boundaries
Choosing a PPA over a cash purchase or loan involves discrete trade-offs across ownership, financial upside, and flexibility:
| Factor | PPA | Cash Purchase |
|---|---|---|
| Upfront cost | $0 | Full system cost |
| Federal ITC benefit | Retained by developer | Retained by owner |
| SREC ownership | Typically retained by developer | Retained by owner |
| Long-term savings ceiling | Capped by contract rate | Uncapped |
| Transferability | Requires buyer qualification | Transfers with property |
Maryland Solar Renewable Energy Credits (SRECs) under the Maryland Renewable Energy Portfolio Standard are a material consideration. In most PPA structures, the developer retains SREC ownership — meaning the offtaker forfeits that revenue stream. Property owners who want to monetize SRECs should review Maryland Solar Renewable Energy Credits (SRECs) and consider whether a loan-financed purchase better aligns with their financial objectives. A direct comparison framework is available at Maryland Solar Lease vs. Purchase Comparison.
The Maryland PSC and Solar Energy Oversight page outlines which developer licensing obligations and consumer protection rules apply to PPA contracts. The broader regulatory landscape governing all Maryland solar structures is documented at regulatory context for Maryland solar energy systems, and a foundational explanation of how solar generation integrates with Maryland's grid appears at how Maryland solar energy systems works.
For property owners beginning their evaluation, the Maryland Solar Authority home provides a structured entry point into each of these interconnected topics.
References
- Maryland Public Service Commission (PSC) — Regulatory authority over electric utilities and net metering in Maryland
- Maryland Code, Public Utilities Article — Maryland General Assembly — Statutory basis for net metering and interconnection standards
- U.S. Department of Energy — Homeowner's Guide to the Federal Tax Credit for Solar Photovoltaics — ITC rate and eligibility details under the Inflation Reduction Act
- National Electrical Code (NEC) — National Fire Protection Association — Installation safety standard referenced in Maryland permitting
- Maryland Energy Administration (MEA) — State agency overseeing solar incentive programs and renewable energy standards