Maryland Solar Energy Statistics and Market Data

Maryland's solar energy market has expanded significantly over the past decade, driven by state-mandated renewable portfolio standards, utility interconnection policy, and a structured incentive framework. This page compiles key statistics and market data for solar energy deployment in Maryland, covering installed capacity, policy benchmarks, economic indicators, and sector-level breakdowns. Understanding this data helps homeowners, commercial operators, and policymakers assess where Maryland stands relative to national benchmarks and its own statutory targets.

Definition and Scope

Maryland solar energy statistics encompass quantitative measurements of solar photovoltaic (PV) and solar thermal deployment across residential, commercial, and utility-scale segments within the state's geographic and regulatory boundaries. These figures are tracked and reported by agencies including the U.S. Energy Information Administration (EIA), the Maryland Energy Administration (MEA), and the Maryland Public Service Commission (PSC).

Market data in this context includes:

Maryland's Renewable Energy Portfolio Standard (RPS), administered under Maryland Code, Environment Article §2-1901 through §2-1911, mandates that 50% of retail electricity sales come from renewable sources by 2030, with a solar carve-out requiring 14.5% from solar by 2030. These statutory targets are the primary policy driver behind the statistics tracked in this domain. For a detailed regulatory walkthrough, see Regulatory Context for Maryland Solar Energy Systems.

Scope limitations: This page covers data pertaining to Maryland-jurisdictional installations and programs. Federal programs administered exclusively by agencies such as the U.S. Department of Energy (DOE) without Maryland-specific implementation are not covered here. Installations sited in Washington D.C. or neighboring states — even by Maryland-registered entities — fall outside this page's geographic scope. Offshore wind data, though tracked under Maryland RPS compliance, is a separate category not addressed here.

How It Works

Solar market data for Maryland is assembled through a layered reporting structure involving multiple institutions:

  1. Installation-level reporting: Contractors and utilities submit interconnection applications and generation data to the PSC and to utilities such as BGE, Pepco, Delmarva Power, and Potomac Edison. Net metering enrollment data flows through this channel.

  2. SREC registry tracking: The PJM Environmental Information Services (PJM-EIS) Generation Attribute Tracking System (GATS) records SREC issuance. Each SREC represents 1 MWh of solar-generated electricity. Maryland's SREC market pricing reflects supply-demand dynamics tied to compliance obligations under the RPS solar carve-out.

  3. State-level aggregation: MEA compiles program participation data from its grant and rebate programs. The PSC tracks compliance filings from retail electricity suppliers.

  4. Federal aggregation: The EIA aggregates state-level data into national datasets, including Form EIA-861 (electric power sales) and Form EIA-923 (power plant operations). Maryland's capacity and generation figures appear in EIA's State Energy Data System (SEDS).

For a technical explanation of how solar energy systems function before interpreting production statistics, the conceptual overview of Maryland solar energy systems provides foundational context.

According to EIA data, Maryland had approximately 2,300 MW of installed solar PV capacity as of 2023, ranking it among mid-tier states nationally. The state generated roughly 3,900 GWh of solar electricity in 2023, representing approximately 8% of total in-state electricity generation (EIA, State Electricity Profiles).

Common Scenarios

Residential Market Metrics

Residential solar installations in Maryland have grown steadily. As of reporting periods through 2023, Maryland had over 80,000 residential solar systems installed (MEA program data). Average system size for Maryland residential installations ranges from 6 kW to 10 kW, based on EIA small-scale solar data. Homeowners exploring system sizing considerations can consult Solar Panel Sizing for Maryland Homes.

Maryland's Community Solar program, administered under PSC Case No. 9431, enables subscribers without rooftop access to receive credits. Community solar capacity subscribed in Maryland exceeded 400 MW across active projects as of 2023 program filings. Details on program structure appear at Maryland Community Solar Programs.

Commercial and Utility-Scale Metrics

Commercial installations — defined as non-residential, non-utility systems — account for a meaningful share of Maryland's installed base. Utility-scale solar (systems above 1 MW) has grown as developers respond to RPS compliance demand. The largest utility-scale projects in Maryland exceed 100 MW in nameplate capacity, sited primarily in southern and western Maryland counties where land availability is greater.

Agricultural solar installations present a distinct data subset, with dual-use (agrivoltaic) projects tracked separately in some MEA datasets. Information on that segment appears at Agricultural Solar Installations in Maryland.

SREC Market Dynamics

Maryland SRECs trade in a compliance market. The Solar Alternative Compliance Payment (SACP) — the penalty utilities pay if they fail to procure enough SRECs — functions as a price ceiling. The SACP for compliance year 2024 is set by PSC order. When SREC supply exceeds compliance demand, prices fall toward zero; when supply is tight relative to the carve-out, prices approach the SACP ceiling. For a detailed treatment, see Maryland Solar Renewable Energy Credits (SRECs).

Incentive Program Uptake

The Maryland Energy Administration's Residential Clean Energy Grant Program has provided grants to tens of thousands of Maryland households. The federal Investment Tax Credit (ITC), set at 30% of system cost under the Inflation Reduction Act (Pub. L. 117-169), interacts with Maryland state incentives. See Federal Investment Tax Credit for Maryland Residents for specifics on how federal and state incentives stack.

Decision Boundaries

Interpreting Maryland solar statistics requires distinguishing between data categories that are frequently conflated:

Installed capacity vs. generation: A megawatt of installed capacity does not equal a megawatt-hour of generation. Maryland's capacity factor for solar PV averages approximately 14–17%, meaning a 1 MW system produces roughly 1,200–1,490 MWh annually. Maryland's solar resource is classified as moderate — lower than southwestern states — which affects production estimates. See Solar Energy Production Estimates for Maryland Climate for climate-adjusted figures.

Nameplate vs. AC capacity: EIA and MEA sometimes report capacity in different units (DC nameplate vs. AC output). DC-to-AC ratios (the "inverter loading ratio") typically run 1.1–1.3 in Maryland installations, meaning a 10 kW DC system produces less than 10 kW at the meter.

Compliance-year vs. calendar-year data: Maryland RPS compliance years do not always align with calendar years. SREC vintage assignments and compliance deadlines are governed by PSC orders, not the federal fiscal year.

Residential vs. small commercial: EIA classifies systems under 1 MW as "small-scale" in its reporting, which includes both residential and small commercial systems. State-level breakdowns at the MEA may use different thresholds.

In-state vs. imported RECs: Maryland's RPS allows limited use of renewable energy certificates (RECs) from out-of-state generators. Statistics on "Maryland renewable energy" sometimes include these imported RECs, which do not reflect in-state solar deployment. The solar carve-out, however, requires Maryland-sited or qualifying Tier 1 solar generation.

For a broader orientation to the Maryland solar market and available resources, the Maryland Solar Authority home page consolidates links to all major topic areas including financing, permitting, and installer selection.

References

📜 2 regulatory citations referenced  ·  ✅ Citations verified Feb 25, 2026  ·  View update log

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