Program details checked on masssave.com on November 10, 2026.

Short answer: ConnectedSolutions is the Mass Save battery program. Your utility pays you $275 per kW for your battery’s average contribution during summer peak events. A typical battery that can deliver 5 kW during events earns up to about $1,375 a year, and the battery still backs up your home during outages.

How ConnectedSolutions works

• On the hottest days, when the grid is most strained, your Mass Save Sponsor (Eversource, National Grid or Cape Light Compact) sends a signal to your battery to discharge.
• Events happen on non-holidays between June 1 and September 30, between 3:00 and 8:00 p.m.
• There are no more than 60 events per summer, and each lasts up to three hours.
• You are paid for your battery’s average contribution (in kW) across those events.

How much you can earn

Average contribution during events	Summer payment at $275/kW
3 kW	$825 a year
5 kW (typical home battery, per Mass Save)	$1,375 a year
10 kW (two batteries)	$2,750 a year

Actual payments depend on how much your battery delivers during each event. National Grid’s program materials say the per-kW rate for new installations is set for the first five consecutive years.

Who can join

• Customers of Eversource, National Grid or Cape Light Compact. Homes served by a municipal light plant (for example Taunton, Peabody, Wellesley or Holyoke) are generally not eligible, because they do not pay into the Mass Save energy efficiency fund. Check with your light department.
• A battery from one of the program’s participating manufacturers. Nexis installs FranklinWH and Tesla Powerwall systems, among others.

Does it affect my backup power?

Events happen on summer afternoons, not during outages. During an outage, the battery runs your essentials as usual. Before you enroll, we go over how much charge your battery keeps in reserve for backup and how events affect it.

Paying for the battery

Home batteries are eligible for 0% financing through the Mass Save HEAT Loan, according to Eversource. Combined with ConnectedSolutions income, many homeowners offset a meaningful part of the cost over time. A battery paired with solar can also earn more under Massachusetts’ SMART program; we include it in your proposal when it applies.

How to sign up

1. Choose an eligible battery and an installer. See our home battery storage options.
2. After installation, enroll with your utility through ConnectedSolutions. We help you complete the enrollment.
3. Your battery responds to events automatically, and your utility pays you based on its average contribution over the summer.

Thinking about solar too? See solar + battery backup and how much solar costs in Massachusetts. Or book a free assessment and we will estimate your ConnectedSolutions income before you decide.

Sources

• Mass Save, Battery Storage (ConnectedSolutions): masssave.com/residential/rebates-offers-services/battery-storage-and-evs/batteries
• National Grid, Program Materials for ConnectedSolutions for Small Scale Batteries (March 2026): nationalgridus.com
• Eversource, Battery Storage Demand Response: eversource.com

Figures checked November 10, 2026. Rebate amounts are from masssave.com; price ranges are from 2026 Massachusetts installer guides.

Short answer: a single-zone ductless mini-split in Massachusetts typically costs about $4,000 to $14,000 installed, and a multi-zone system for most of a home about $9,000 to $25,000, before rebates. Mass Save pays $1,125 per ton if you keep your boiler or furnace, or $2,650 per ton if heat pumps become your only heat, up to $8,500 in 2026. Those rebates drop on January 1, 2027.

Mini-split cost in Massachusetts (2026)

Project	Typical installed cost, before rebates
Single zone (one indoor unit)	About $4,000-$9,000 (MassHVAC) to $6,000-$14,000 (Endless Energy)
Multi-zone (several rooms or the whole home)	About $9,000-$24,000 (Endless Energy) to $12,000-$25,000 (MassHVAC)

The spread is wide because no two homes are alike, and installer estimates vary. Compare quotes for the same equipment and number of zones.

What changes the price

• Number of zones: each indoor head adds equipment and labor.
• Line-set runs: the distance and route between the outdoor unit and each indoor unit.
• Cold-climate equipment: units rated to heat through Massachusetts winters cost more, and rebates require models on Mass Save’s Qualified Products List.
• Electrical work: a new circuit, and sometimes a panel upgrade in older homes.
• Indoor unit style: wall-mounted heads cost least; ceiling cassettes and concealed ducted units cost more.

Mass Save mini-split rebates in 2026

Your situation	Rebate type	2026 amount
Keep your boiler or furnace as backup	Partial-Home	$1,125 per ton, up to $8,500, plus possible $500 weatherization and $500 sizing bonuses
Mini-splits become your only heating and cooling	Whole-Home	$2,650 per ton, up to $8,500
Not replacing oil, propane, gas or electric resistance heat	Basic	$250 per ton, up to $2,500
Income-qualified home heating with oil, propane or electric resistance	Income-based enhanced	Up to $16,000, or up to no cost through Turnkey Services

Tons are the unit’s rated cooling capacity divided by 12,000 BTU, so a 12,000 BTU wall unit counts as 1 ton. You also need a Mass Save Heat Pump Installer Network contractor; Nexis Power is one.

Two examples

• Two rooms, keeping the boiler: two 1-ton units = 2 x $1,125 = $2,250 partial-home rebate, plus up to $1,000 in bonuses if you qualify.
• Whole home, boiler removed: four zones totaling 3.5 tons = 3.5 x $2,650 = $9,275, capped at $8,500.

These are illustrations; your rebate depends on the exact equipment and the program rules. Check yours with our Mass Save heat pump rebate calculator.

Install before 2027 if you can

For projects installed on or after January 1, 2027, Mass Save cuts the whole-home rebate to $2,350 per ton (capped at $7,500) and the partial-home rebate to $1,000 per ton (capped at $7,500). Details in Mass Save heat pump rebates 2026.

Paying for it

The Mass Save HEAT Loan offers 0% financing up to $25,000 for qualifying heat pumps, including ductless mini-splits. Apply before installation.

Is a mini-split right for your home?

Mini-splits are ideal for homes with radiators or baseboard heat, additions, finished basements, and rooms that are always too hot or too cold. If your home already has good ductwork, a ducted heat pump may cost less per room. Compare both on our ductless mini-split installation page, or see whole-project numbers in heat pump installation cost in Massachusetts.

Book a free assessment and we will size each zone, price it and file your rebate.

Sources

• Mass Save, Air Source Heat Pumps (2026 rebates and 2027 changes): masssave.com
• Mass Save, 0% Interest Financing: masssave.com/residential/rebates-offers-services/financing
• MassHVAC, Mini-split cost in Massachusetts (2026): masshvac.com
• Endless Energy, Ductless mini-split installation in Massachusetts: goendlessenergy.com

Figures checked November 10, 2026. Every home is different; your quote comes after a load calculation, not before.

Short answer: a whole-home cold-climate heat pump in Massachusetts typically costs about $18,000 to $28,000 before rebates in 2026, with averages reported around $22,000 to $23,500. Mass Save’s 2026 whole-home rebate of up to $8,500 and the 0% HEAT Loan bring the out-of-pocket cost down considerably.

Typical 2026 price ranges

Project	Typical cost before rebates	2026 Mass Save rebate
Whole-home air-source system	About $18,000-$28,000	$2,650/ton, up to $8,500
Partial-home (keep boiler or furnace as backup)	Less than whole-home; depends on zones covered	$1,125/ton, up to $8,500, plus possible $500 bonuses
Income-qualified home	Same project	Up to $16,000, or up to no cost through Turnkey Services

Ranges come from 2026 Massachusetts installer and marketplace guides; one source citing Mass Save program data puts the average whole-home air-source installation at about $22,000.

What drives the price

• Size (tons): set by a room-by-room heat-loss calculation. Bigger, leakier homes need more capacity.
• Ducted or ductless: homes with good ductwork can use a ducted heat pump; homes with radiators or baseboard usually use ductless mini-splits, priced by the number of indoor units.
• Electrical capacity: older homes with 100-amp service sometimes need a panel upgrade, which we price separately in your quote.
• Weatherization: insulation and air sealing let you install a smaller, cheaper system, and are required for the whole-home rebate in many homes.
• Keeping a backup: a hybrid setup that keeps your boiler or furnace lowers upfront cost but uses the partial-home rebate.

Example: whole-home system, before and after

• Installed price: $22,000 (around the reported average)
• Mass Save whole-home rebate for a 4-ton system in 2026: -$8,500
• Net cost: about $13,500, which can be financed at 0% through the HEAT Loan (up to $25,000)

This is an illustration, not a quote. Your rebate depends on the equipment’s rated tons and on meeting the program requirements.

Install before January 1, 2027 if you can

Mass Save’s whole-home rebate drops to $2,350 per ton, capped at $7,500, for systems installed on or after January 1, 2027. On a 4-ton system, that is $1,000 less. Full details in Mass Save heat pump rebates 2026.

What about running costs?

Operating cost depends on what you heat with today, your electricity rate and how well the home is insulated. Homes replacing oil, propane or electric resistance heat usually see the biggest change. We compare your current fuel bills with expected heat pump use during the assessment, rather than quoting a generic number.

Get your price

Nexis Power is a Mass Save Heat Pump Installer Network contractor. We do the load calculation, design the system, install it and file your rebate and HEAT Loan paperwork. Learn more about heat pump installation in Massachusetts, or book a free assessment.

Sources

• Mass Save, Air Source Heat Pumps (2026 rebates and 2027 changes): masssave.com
• Mass Save, 0% Interest Financing (HEAT Loan): masssave.com/residential/rebates-offers-services/financing
• MassHVAC, Heat pump cost in Massachusetts (2026): masshvac.com/resources/heat-pump-cost-massachusetts/
• Triangle Mechanical, What does a heat pump cost in Massachusetts? The 2026 numbers: triangle-mechanical.com

Figures checked on masssave.com on November 10, 2026.

Short answer: in 2026, Mass Save pays up to $8,500 for a whole-home air-source heat pump ($2,650 per ton), up to $16,000 or a no-cost installation for income-qualified homes, and 0% financing up to $25,000 through the HEAT Loan. Rebates drop on January 1, 2027, so systems installed by December 31, 2026 get the current amounts.

2026 Mass Save air-source heat pump rebates

Rebate	2026 amount	Who it is for
Whole-Home	$2,650 per ton, up to $8,500	Heat pumps become the only heating and cooling system
Partial-Home	$1,125 per ton, up to $8,500	You keep your boiler or furnace as backup
Basic	$250 per ton, up to $2,500	Not replacing oil, propane, gas or electric resistance heat (for example, replacing central AC)
Income-based enhanced	Up to $16,000, or up to no cost through Turnkey Services	Income-qualified homes heating with oil, propane or electric resistance

Tons are based on the equipment’s AHRI cooling capacity divided by 12,000 BTU. Partial-home projects can add a $500 weatherization bonus and a $500 sizing bonus.

What changes on January 1, 2027

Mass Save has announced lower rebates for projects installed on or after January 1, 2027:

• Whole-Home: $2,350 per ton, capped at $7,500 (down from $8,500).
• Partial-Home: $1,000 per ton, capped at $7,500.

What counts is the installation date, so if you are already planning a heat pump, there is a real reason to install before the end of 2026.

Requirements for the whole-home rebate

• Heat pumps as the sole heating and cooling source. The old system is removed or disconnected; a signed Whole-Home Heat Pump Verification Form is required.
• A sufficiently weatherized home. Your home qualifies if it was built in 2000 or later, if a Mass Save Home Energy Assessment recommends less than $1,000 of weatherization, or if recommendations from 2013 or later were completed.
• Qualified equipment from the Mass Save Heat Pump Qualified Products List.
• A Heat Pump Installer Network contractor. Nexis Power is a Mass Save HPIN installer.

Income-based enhanced rebates also require income verification, and all weatherization recommended in the Home Energy Assessment must be completed first. That weatherization is free for income-verified customers.

Deadlines for 2026 rebates

• Equipment installed between January 1 and December 31, 2026.
• Rebate paperwork submitted by February 28, 2027.
• Since October 1, 2026, equipment serial numbers are required on every application.

The 0% HEAT Loan

The Mass Save HEAT Loan finances qualifying heat pumps and weatherization at 0% interest, up to $25,000 combined across your projects. Apply before installation, and use a Heat Pump Installer Network contractor. More on our Mass Save rebates and HEAT Loan page.

Example: a 3-ton whole-home system

3 tons x $2,650 = $7,950 rebate in 2026. The same system installed in January 2027 would get 3 x $2,350 = $7,050. A 4-ton system reaches the cap: $8,500 in 2026, or $7,500 in 2027.

Estimate your own with our Mass Save heat pump rebate calculator, and see what the whole project costs in heat pump installation cost in Massachusetts.

How Nexis handles it

We size the system with a room-by-room load calculation, pick qualified equipment, install it, and file the rebate and HEAT Loan paperwork for you. Book a free assessment to see your rebate before you commit.

Sources

• Mass Save, Air Source Heat Pumps (2026 rebates and 2027 changes): masssave.com/residential/rebates-offers-services/heating-and-cooling/heat-pumps/air-source-heat-pumps
• Mass Save, 0% Interest Financing (HEAT Loan): masssave.com/residential/rebates-offers-services/financing
• Mass Save, Enhanced Heat Pump Rebates: masssave.com

Figures checked November 10, 2026.

Short answer: for many Massachusetts homes, yes. The state has some of the highest electricity rates in the continental U.S., and solar still earns 20 years of SMART payments, net-metering credits and state tax breaks. The federal homeowner tax credit ended after 2025, though, so the math is tighter than it was. Whether it is worth it for your home comes down to four things.

1. How much electricity you use, and will use

Solar pays back fastest when it replaces a big electric bill. If you plan to add a heat pump or an EV, your usage will go up, and a system sized for that future use usually earns more over its life.

2. Your roof: direction, shade and condition

South, east and west roofs with little shade produce the most. A roof that will need replacing in the next few years should usually be replaced first, so panels do not have to come off later. We check this during the assessment; see solar-ready roofing.

3. The incentives that still apply in 2026

• SMART 3.0: $0.03 per kWh produced for home systems up to 25 kW ($0.06 for low-income qualified customers), locked for 20 years (MassCEC).
• Net metering: bill credits for the extra power you send to the grid.
• State tax credit: 15% of cost, up to $1,000.
• No sales tax on residential solar equipment, and no added property tax on the value solar adds, for 20 years.

What is gone: the 30% federal Residential Clean Energy Credit for homeowner-owned systems, which ended after December 31, 2025. Details on our Massachusetts solar incentives page.

4. How you pay

• Cash: highest lifetime savings; you keep every SMART payment and bill credit.
• Loan: little or nothing down; many homeowners aim for a payment at or below the bill it replaces.
• Lease or PPA: no ownership costs; the owner may still claim a federal business credit through 2027, but you give up most of the long-term value.

Compare options on our financing page.

When solar is usually not worth it

• Heavy shade most of the day, or a north-facing roof only.
• You plan to move very soon and would not get the value back in the sale price.
• A very small electric bill, so there is little to offset.

We will tell you if your home falls into one of these. An honest no is better than a system that disappoints.

How to get your real number

1. Pull your last 12 months of electric bills.
2. Try our solar savings calculator for a first estimate.
3. Book a free assessment: we model your roof, shade and usage, then show your price, SMART income and payback side by side.

Want the price side in detail? Read how much solar panels cost in Massachusetts in 2026.

Sources

• MassCEC, Guide to the SMART 3.0 program (June 10, 2026): masscec.com
• EnergySage News, bill ending the residential solar tax credit: energysage.com/news
• EnergySage, Massachusetts solar panel cost (updated October 30, 2026): energysage.com/local-data/solar-panel-cost/ma/

Figures checked November 10, 2026. Prices and incentives change; we confirm the current numbers for your address before you sign anything.

Short answer: most Massachusetts homeowners pay about $2.60 to $3.50 per watt for an installed rooftop solar system in 2026, with marketplace averages near $2.90 per watt. A typical system of about 11 kW comes to roughly $32,000 before incentives. What you actually pay depends on your roof, your electricity use and which incentives apply to you.

Average solar panel cost in Massachusetts (2026)

EnergySage’s marketplace data (updated October 30, 2026) puts the Massachusetts average at $2.90 per watt installed, and a typical 11.05 kW system at about $32,067 before incentives. Other 2026 guides land in the same range: SolarReviews reports about $3.13 per watt and ConsumerAffairs about $2.91 per watt.

System size	At $2.60/W	At $2.90/W (average)	At $3.40/W
6 kW	$15,600	$17,400	$20,400
8 kW	$20,800	$23,200	$27,200
10 kW	$26,000	$29,000	$34,000
12 kW	$31,200	$34,800	$40,800

Smaller systems usually cost more per watt, because permitting, design and labor are partly fixed costs.

Is the 30% federal solar tax credit still available?

Not for homeowners who buy their system in 2026. The federal Residential Clean Energy Credit (Section 25D) ended for homeowner-owned systems after December 31, 2025, under the law signed in July 2025. If your system was finished in 2025, you can still claim it on your 2025 return, and unused credit from earlier years can still carry forward.

Leased systems and power purchase agreements (PPAs) are different: the company that owns the system may still claim a business credit through 2027 and pass some of that value to you in the price. Ask your tax professional how your situation applies.

Massachusetts incentives that still lower your cost

• SMART 3.0: in 2026, home systems of 25 kW or less earn a flat $0.03 per kWh they produce ($0.06 for low-income qualified customers), locked in for 20 years, according to MassCEC. Rates can change for later program years.
• Net metering: extra power your panels send to the grid earns bill credits from your utility.
• State income tax credit: 15% of the system cost, up to $1,000.
• Sales tax exemption: residential solar equipment is exempt from the 6.25% state sales tax. Your quote should not include it.
• Property tax exemption: the value solar adds to your home is exempt from local property tax for 20 years.

See every program and how they stack on our Massachusetts solar incentives page.

Example: an 8 kW system

• Installed price at the $2.90/W average: $23,200
• Minus the state tax credit: -$1,000, for a net of about $22,200
• SMART payments: if the system produces about 9,000 kWh a year, SMART pays about $270 a year for 20 years, on top of your net-metering bill savings.

This is an illustration, not a quote. Production depends on your roof direction, pitch and shade, which is why we model your actual roof before pricing.

What makes a solar quote higher or lower

• System size: sized to your last 12 months of electricity use, and to any heat pump or EV you plan to add.
• Roof condition: if your roof needs replacing within a few years, it is usually cheaper to do it first. See solar-ready roofing.
• Electrical panel: older 100-amp panels sometimes need an upgrade. See panel upgrades.
• Equipment: panel brand, microinverters or optimizers, and monitoring.
• Battery: adding storage raises the price, and can earn utility battery program payments. See home battery storage.

Paying for it

Many homeowners finance solar so the monthly payment is close to, or below, the electric bill it replaces. Compare financing options, or estimate your own numbers with our solar savings calculator.

Get an exact price for your home

Nexis Power designs, permits and installs solar panels for Massachusetts homes and files the SMART and interconnection paperwork for you. Book a free assessment and we will model your roof, your bill and your incentives before you decide.

Sources

• EnergySage, Massachusetts solar panel cost (updated October 30, 2026): energysage.com/local-data/solar-panel-cost/ma/
• SolarReviews, Massachusetts solar panel costs 2026: solarreviews.com/solar-panel-cost/massachusetts
• MassCEC, Guide to the SMART 3.0 program (June 10, 2026): masscec.com
• EnergySage News, bill ending the residential solar tax credit: energysage.com/news