MassCEC - Commonwealth Solar Stimulus (Massachusetts)

From Open Energy Information


Last modified on June 1, 2011.

Financial Incentive Program

Place Massachusetts

Name MassCEC - Commonwealth Solar Stimulus
Incentive Type State Rebate Program
Applicable Sector Commercial, Industrial, Nonprofit, Schools, Local Government, State Government, Fed. Government, Multi-Family Residential, Low-Income Residential, Agricultural, Institutional
Eligible Technologies Photovoltaics
Active Incentive No
Implementing Sector State/Territory
Energy Category Renewable Energy Incentive Programs
Amount 1.50/W (DC) for first 25 kW; 1.00/W (DC) for greater than 25 kW to 100 kW; 0.50/W (DC) for greater than 100 kW to 200 kW.

Eligible System Size Systems greater than 10 kW and less than or equal to 200 kW
Equipment Requirements All equipment must be new, UL-listed and compliant with IEEE standards. Modules must be certified to UL 1703 standards. Inverters must be certified to IEEE 929 and UL 1741 standards. All modules, inverters, and production meters must be on the California Energy Commission's list of eligible equipment. Automated reporting encouraged for systems over 10 kW. Minimum manufacturer warranties required: 5 years product and 20 years performance for modules; 10 years for inverters; 2 years for revenue grade production meters; and 5 years for mounting equipment. Must comply with ARRA requirements for "Buy American" if on public building.
Expiration Date First block: April 2010

Installation Requirements Projects must be installed in compliance with all local, state, and/or federal building and electrical laws, codes and practices. Electrical work must be performed by a Massachusetts licensed electrician. NABCEP certification recommended. Projects must have a minimum 5-year warranty provided by the installer against defective workmanship, project or component breakdown, or degradation in electrical output of more than 15% from original rated electrical output during the warranty period. Projects generally must be grid-tied and "behind the meter." Must comply with ARRA requirements (such as prevailing wage), as applicable.

Maximum Incentive 162,500 per project (up to 1 million for any host customer entity, or parent company/organization per funding block)
Ownership of Renewable Energy Credits Remains with project owner

Program Budget $8 million ($4million for first block)

Program Administrator Massachusetts Clean Energy Center

References DSIRE[1]


Funding for Block II is fully subscribed. No additional applications are being accepted. Awards were announced in June: see the Energy and Environmental Affairs June 29, 2010 Press Release

Commonwealth Solar Stimulus, administered by the Massachusetts Clean Energy Center (MassCEC) and funded by the American Recovery and Reinvestment Act (ARRA), provides rebates for the installation of grid-tied photovoltaic (PV) systems at commercial, industrial, institutional and public facilities. Commonwealth Solar Stimulus rebates are available to electricity customers served by Massachusetts investor-owned electric utilities and municipal lighting plant (MLP) utilities. Projects are eligible for rebates for PV projects greater than 10 kilowatts (kW) and less than or equal to 200 kW in capacity. For residential projects and projects 10 kW or smaller, see the Commonwealth Solar II rebate program. Ground mounted systems up to 60 kW are eligible.

Rebate amounts are based on the total PV system size per building, regardless of the number of electric meters in use and certain other characteristics of the project. The Commonwealth Solar Stimulus rebate tiers are:

  • For first 1 to 25 kW: $1.50/watt
  • For greater than 25 to 100 kW: $1.00/watt
  • For greater than 100 to 200 kW: $0.50/watt

The rebate is available to the system owner, which may or may not be the host customer. Solar renewable-energy credits (SRECs) associated with system generation belong to the system owner and may be sold. MassCEC reserves the right to conduct post-installation inspections of PV projects prior to approval for payments.

System installers are responsible for the application process and securing necessary permits. MassCEC has developed an online application system (called PowerClerk) for pre-approved installers. An energy-efficiency audit is generally required. Required documentation generally includes electric utility interconnection approval, an energy-efficiency audit, paid invoices or equivalent, and, if applicable, evidence that automated reporting is functional. All installers must comply with the minimum insurance requirements established by MassCEC. It is recommended, but not required, that installers or their subcontractors obtain or seek to obtain North American Board of Certified Energy Practitioners (NABCEP) PV installer certification. There are additional compliance requirements because the funding for this rebate comes from Federal stimulus (ARRA) money.

This summary does not capture all of the requirements of the Commonwealth Solar Stimulus program. MassCEC provides program manuals as well as appendices with full program requirements.

Incentive Contact

Contact Name Commonwealth Solar Stimulus
Department Massachusetts Clean Energy Center
Address 55 Summer Street, 9th Floor
Place Boston, Massachusetts
Zip/Postal Code 02110


  • Incentive and policy data are reviewed and approved by the N.C. Solar Center's DSIRE project staff.[1]


  1. 1.0 1.1  "Database of State Incentives for Renewables and Efficiency (DSIRE)"

Rebates Grants Solar Photovoltaic Incentives

PV Commercial Min KW 5.1
PV Commercial Max KW 200
PV Commercial Max $ $162,500

PV Commercial Increment 1 KW 25
PV Commercial Increment 1 $/KW $1,500

PV Commercial Increment 2 KW 75
PV Commercial Increment 2 $/KW $1,000
PV Increment 3 KW 100
PV Commercial Increment 3 $/KW $500

  • Incentive and policy data are reviewed and approved by the N.C. Solar Center's DSIRE project staff.[1]


  1.  "Database of State Incentives for Renewables and Efficiency (DSIRE)"