Massachusetts - Requirements for Solar Power Installation

Massachusetts State licensing requirements for solar power installers and solar power installations

The rules that regulate the installation of solar power systems are different in each state and even sometimes from county to county. It is important that you are aware of these rules as a potential customer because often it is a condition of receiving rebates and incentives that your system meets these requirements. We have created pages which will help you make sure your solar panel installer is properly licensed and assist you to ask your installer the right questions about the system they are proposing to install for you, generally the following needs to be considered;

  • Licensing requirements for Solar Installers in each state
  • Equipment Standards or Certification
  • Interconnection Standards and other requirements

We have done our best to get as much info as we can, as always the people who know the current state of play in your area are your local solar power professionals.

Licensing requirements for Solar Installers in Massachusetts

Massachusetts has specific licensing requirements for those wishing to install solar power systems. It is a requirement that electrical contractors be registerd with MassCEC. MassCEC has developed an online application system (called PowerClerk) for pre-approved installers. 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.

Equipment Standards or Certification

Massachusetts has specific standards that solar power equipment must comply with, all solar equiptment must be new, UL listed and comply with IEEE standards. Solar panels must be certified to UL 1703, inverters need to be certified to IEEE 929 and UL 1741. All solar equipment must be on the California Energy commissions list of eligable equipment. 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."

Interconnection Regulations (small generator)

Massachusetts has a three-tiered approach to interconnection regulations. Different levels of review are subject to specific technical screens, review procedures, and time lines. Basically the review process becomes more complex as the system size gets over 10kW. Simplified interconnection applies to certified, inverter-based, single-phase less than 10 kilowatts (kW) and certified, three-phase systems up to 25 kW in capacity. For simplified interconnection, there are no fees for the interconnection approval process. If the proposed interconnection is on a distribution network circuit, the utility may charge a $100 fee to review the network protector's interaction with the system. For simplified network interconnection, the aggregate generating facility capacity must be less than 1/15th of the customer's minimum load.


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