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Get a Free QuoteFull Retail Rate credits at $0.2833/kWh · Massachusetts · Residential cap 25kW
$0.28/kWh
Credit Rate
25 kW
Residential Cap
$6.28
Min Monthly Bill
monthly
Credit Rollover
Last updated: 2025-02-01
Unitil Energy Systems (MA) customers earn $0.2833/kWh per kWh through full retail rate net metering credits — dollar-for-dollar against your retail rate. Credits roll over monthly with march annual true-up. The typical Unitil Energy Systems customer with a 8kW system saves $2,326.56 per year.
Net metering lets you earn credits for surplus solar energy sent back to the grid. Here is how it works with Unitil Energy Systems.
Solar panels are installed on your roof or property and wired to an inverter.
Your system is interconnected with the utility grid through a bidirectional meter.
Panels produce electricity throughout the day, powering your home first.
A smart meter measures electricity flowing both to and from the grid in real time.
Excess energy sent to the grid earns credits that offset your future electric bills.
All current residential rate schedules relevant to net-metered solar customers. Understanding your rate schedule is critical for accurately estimating savings.
| Plan Name | Rate | Fixed Charge | TOU Available | Peak Rate | Off-Peak Rate |
|---|---|---|---|---|---|
| R Residential | $0.2833/kWh | $6.28/mo | No | — | — |
Based on a typical Unitil Energy Systems household using 900 kWh/month with a 8kW system generating 800 kWh/month.
Estimated Annual Savings
$2,326.56
$193.88/month average
Your credits depend on system size, utility, and local rates.
Calculate My SavingsResidential Cap
25 kW AC
Commercial Cap
2 MW AC
Interconnection Fee
Free ($0)
Application Timeline
2-3 weeks
Permit Required
Yes, local building permit required
Inspection
Utility inspection required before PTO
Meter Type
Bidirectional smart meter
Minimum Monthly Bill
$6.28
Residential net metering cap expanded from 10kW to 25kW AC (February 2025)
Updated default service supply rates for 2026
Continued participation in the statewide SMART program
Some third-party sources may still display outdated net metering data for Unitil Energy Systems. The information on this page is sourced directly from utility filings and verified as of 2025-02-01.
What Unitil Energy Systems customers need to know about net metering in 2026.
Unitil MA credits solar exports at 100% of the retail rate ($0.2833/kWh in 2026), the same structure as other MA investor-owned utilities.
Unitil is the smallest investor-owned electric utility in Massachusetts, serving approximately 28,000 customers in the greater Fitchburg area.
The residential net metering cap is 25kW AC, matching the statewide expansion from February 2025.
Unitil has among the lowest rates of the three MA IOUs, but solar still provides excellent savings given the statewide SMART incentive.
No interconnection fee and a relatively fast 2-3 week application timeline make the process straightforward.
The minimum monthly customer charge is $6.28, slightly lower than Eversource and National Grid.
SMART program incentives are available to Unitil customers, adding $0.04-0.08/kWh on top of net metering credits.
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Common questions about Unitil Energy Systems net metering.
Primary Source
Unitil Schedule R TariffLast Verified
2025-02-01
Methodology
Rate data and policy details are sourced directly from Unitil Energy Systems's published tariff schedules and interconnection standards. We verify this data monthly against utility filings and update the page within 48 hours of any confirmed policy change.
See how much you can save with Unitil Energy Systems net metering credits at $0.2833/kWh. Our Massachusetts solar experts will design a system optimized for your utility rate plan.