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NuWatt designs, installs, and manages solar, battery, heat pump, and EV charger systems across 9 states. One company, one warranty, one point of contact.
Get a Free QuoteHMLP
A resident-owned, municipally-run electric utility established to provide low cost (approximately $0.165/kWh as of Apr 2026), safe, reliable electricity to Hingham residents.
Towns Served:
Mass Save Eligibility
HMLP customers are NOT eligible for Mass Save. However, natural gas customers may qualify for Mass Save heat pump rebates separately.
Maximum: $6,000 (10 kW lifetime cap)
One-time rebate for grid-connected residential solar installations. Lifetime cap of 10 kW AC per service address.
View All IncentivesMaximum: $4,500 + $500 weatherization adder + $1,000 whole-home adder
$750/ton base rebate with $500 weatherization adder and $1,000 whole-home adder available. Gas customers are NOT eligible. Same per-ton rate applies to ASHP and GSHP. $500 weatherization adder + $1,000 whole-home adder available. $10,000 lifetime maximum across all HMLP rebates.
BEV: up to $600. PHEV ≥15 kWh: up to $300. PHEV <15 kWh: up to $200. One per account.
$500 lifetime maximum.
Monthly credits: battery $30/mo, EV $10/mo, EV charger $10/mo, hot water $5/mo, mini-split controller $5/mo, thermostat $5/mo.
Heat pump dryer $300, induction stove $300, smart thermostat $100, programmable thermostat $50, central AC/air purifier/dehumidifier/washer/refrigerator $25-$50. $200 annual cap on most categories.
Excess solar generation credited at $0.0960/kWh for systems ≤20 kW under HMLP Net Metering Rate (2026). Credits applied to following month's bill. NOT full retail rate — HMLP retail residential energy charge is ~$0.165/kWh.
Earn $5-$30/month per device
Monthly credits for connected devices: battery $30, EV $10, EV charger $10, hot water $5, mini-split controller $5, thermostat $5.
NuWatt handles all the paperwork to ensure you receive every rebate available from Hingham Municipal Lighting Plant.