Maryland’s net-metering law has been expanded several times since it was originally enacted in 1997. The net metering rules apply to all utilities -- investor-owned utilities (IOUs), electric cooperatives and municipal utilities. Residents, businesses, schools or government entities with systems that generate electricity using solar, wind, biomass, fuel cell, closed-conduit hydroelectric, and micro-CHP resources are eligible for net metering. The law permits outright ownership by the customer-generators as well as third-party ownership structures (e.g., leases and power purchase agreements). The provisions allowing for micro-CHP systems and certain third-party ownership structures were added in 2009. Net metering was extended to fuel cell electricity generation systems in 2010 and closed-conduit hydroelectric facilities in 2011.
Other important details of Maryland's net metering policy include:
Utilities must install a meter at a customer's facility capable of measuring the flow of electricity in both direction (if necessary), and must offer net metering through a tariff or contract at non-discriminatory rates compared to those offered to customers that do not net meter. The net-metered customers are typically required to pay a monthly customer charge regardless of the amount of electricity generated. However the customers are billed only for the energy that they use, netted against the amount generated by the customer. SB 353 enacted in May 2015, allows a person or a company who is installing a solar generation facility on the customer’s property to submit application for interconnection with the electric distribution facility. While the solar installer might accept payment prior to the installation, they must refund the payment if the application for interconnection is denied.
Virtual Net Metering
HB 1087 enacted on May 2015 authorizes the Public Service Commission (PSC) to establish a three year pilot program for community solar projects in the State. Community solar projects must be sized 5 MW or less, and must have at least 2 subscribers. Customers of all rates classes including residential, commercial, and people in leases properties can participate in the community solar project. Value of electricity generated by the solar system is credited to its subscribers through virtual net-metering. Individual subscriber may not receive credit for more than 200% of the subscriber's baseline annual usage. Individual subscriptions are capped at 200 kW, and must be less than 60% of the total subscription of the particular community solar system.
Community solar energy system must be located in the same electric service territory as its subscribers. Any unsubscribed electricity from the community solar projects is sold to the electric company at the electric company’s avoided cost. The legislation allows any third party to finance, build or operate a community solar project. The PSC is required to adopt regulations to implement the pilot program before May 15, 2016. The PSC must also in consultation with the Maryland Energy Administration convene a stakeholder workgroup to study the benefits and costs of the pilot program and make recommendations on the advisability of establishing a permanent program by July 1, 2019. Total solar capacity installed under this pilot program shall count towards the total state net-metering cap of 3,000 MW.
Customers with systems that meet all applicable safety and performance standards established by the National Electrical Code (NEC), the Institute of Electrical and Electronics Engineers (IEEE), Underwriters Laboratories (UL) and any other PSC requirements may not be required by utilities to install additional controls, to perform or pay for additional tests, or to purchase additional liability insurance.
Implementing Sector: | State |
Category: | Regulatory Policy |
State: | Maryland |
Incentive Type: | Net Metering |
Web Site: | https://www.psc.state.md.us/electricity/the-electricity-division/community-net-metering/ |
Administrator: | MD Public Service Commission |
Start Date: | |
Eligible Renewable/Other Technologies: |
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Applicable Utilities: | All utilities |
System Capacity Limit: |
5 MW (30 kW for micro-CHP); Limited to that needed to meet 200% of annual baseline customer electricity usage 2 MW facilities on contiguous parcels may aggregate up to 14 MW. |
Aggregate Capacity Limit: |
3,000 MW (Increased from 1,500 MW by HB 569 of 2021) As of October 2021, 932 MW is currently operational. |
Net Excess Generation: | Credited to customer's next bill at retail rate; reconciled annually in April at the commodity energy supply rate As of October 2023, customers may elect to accrue credits instead of receiving annual reconciliation payouts. |
Ownership of Renewable Energy Credits: | Customer owns RECs |
Meter Aggregation: | Allowed for agricultural customers, non-profit organizations, and municipal governments or their affiliates |
Name: | Md. Public Utility Companies Code § 7-306 |
Date Enacted: | 1997 (subsequently amended) |
Name: | COMAR 20.50.10 |
Date Enacted: | 08/16/2011 |
Effective Date: | 02/20/2012 (most recent amendments) |
Name: | David St. Jean |
Organization: | Energy and Sustainability |
Address: |
301 West Preston Street Baltimore MD 21201 |
Phone: | (410) 767-4472 |
Email: | david.stjean1@maryland.gov |
Name: | Phil VanderHeyden |
Organization: | MD Public Service Commission |
Address: |
|
Phone: | (410) 767-8115 |
Email: | phillip.vanderheyden@maryland.gov |
This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.
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