Printer-Friendly Page | E-mail this Page
 
Net Metering

Net Metering is the process of measuring the difference between electricity delivered by WMECo to the customer and electricity generated by the customer with a Class 1, Class 2 or Class 3 net metering facility and fed back to WMECo. Net metering allows a customer to reduce the amount of energy purchased from an energy supplier and receive compensation for excess energy (exported energy to the grid) produced by the customer's on-site generator.

View the net metering tariff (PDF:54KB), approved by the Massachusetts Department of Public Utilities.

The Green Communities Act provides for three classes of net metering customers:

  • Class 1: solar/wind/agricultural generation, 60 kW and less
  • Class 1: all other generation (non-renewable) 60 kW and less
  • Class 2: solar/wind/agricultural generation over 60 kW to 1,000 kW
  • Class 3: solar/wind/agricultural generation over 1,000 kW to 2,000 kW

Click here to see related diagrams. (PDF:80KB)

If you believe your generation facility qualifies as Class 1, 2 or 3, submit the net metering application (PDF:116KB) to:

Western Massachusetts Electric Company
Attention: WMECo DG
55 Russell Street
Hadley, MA 01035-9455

See an example of a completed net metering application. (PDF:1.9MB)

Under the net metering rules, customers will receive a credit on their monthly bill based on their rate class. Under the new rules, the following will apply:

  • Class 1 and 2 customers and municipal/governmental Class 3 customers whose generation is wind, solar or agricultural will receive credit equal to the excess kilowatt-hours (kWh) by time-of-use rates, if applicable, and the product of the sum of the following charges applicable to the rate class under which the customer takes service:
    • Basic service kWh charge
    • Distribution kWh charge
    • Transmission kWh charge
    • Transition kWh charge
  • Other Class 3 customers will receive credit equal to the excess kilowatt-hours (kWh) by time-of-use rates, if applicable, and the product of the sum of the following charges applicable to the rate class under which the customer takes service:
    • Basic service kWh charge
    • Transmission kWh charge
    • Transition kWh charge
  • Class 1 customers whose generation is not solar, wind or agricultural will continue to receive the average loss-adjusted monthly clearing price set by ISO New England. These customers must submit proof to WMECo that they are a FERC Qualifying Facility.

For more information, or if you have questions, please e-mail wmecodg@nu.com or call the DG and Net Metering Information Line at (413) 787-1087.

The net metering provision, as approved in Massachusetts, allows up to 3% of the Distribution Company’s highest historical peak load for Private facilities and 3% of the highest historical peak load for Public facilities.

The highest historical peak load at WMECo is 845 MW and was recorded on August 2, 2006.

3% of the highest historical peak load is 25.35 MW.

As of April 1, 2014, the aggregate capacity of all Private installed Net Metered facilities towards the 3% of the highest historical peak load is 7.558 MW.

As of April 1, 2014, the aggregate capacity of all Public installed Net Metered facilities towards the 3% of the highest historical peak load is 9.996 MW.

Additionally, information about the aggregate capacity of net-metered public and private facilities pending interconnection is available at www.massaca.org.

D.P.U. 11-11-A - Request for Proposal of System of Assurance Administrator (PDF:539KB)