Your July bill probably already stung, and then rates climbed again. The Massachusetts electric rate increase that took effect August 1 raised supply charges at both major utilities in the middle of cooling season, which is when a home pulls the most power of the year. Whether it actually changes what you pay depends on who sells you your electricity, and on whether your central AC system is efficient enough to keep the meter from spinning faster than it has to.

Quick Answer: Who the Massachusetts Electric Rate Increase Actually Hits

Only customers on utility basic service saw the August 1 jump. As of March 2026, that was 26.6% of Massachusetts electric customers. Roughly 51% get supply through municipal aggregation and about 22% buy from a competitive supplier, and neither of those rates changed on August 1.

What Changed on August 1

Eversource’s basic service rate went from 15.6 cents per kilowatt hour to 17.3 cents, an increase of about 10.9%. National Grid moved two products at once, according to Boston.com’s reporting on the change: its fixed option jumped from 15.372 cents to 17.185 cents, up 11.8%, while its variable option rose more modestly from 15.546 cents to 16.074 cents, roughly 3.4%.

Eversource pinned the increase on market conditions rather than any decision by the company. The utility cited an unusually cold winter that pushed natural gas demand up, plus international instability including the ongoing conflict in Iran. It also pointed out that it earns no profit on the supply charge, since it passes through what it pays.

That last detail matters more than it sounds. It means the number isn’t something the utility can negotiate down, and it means the number can fall again when wholesale gas prices do. For Metro West households, the timing is the bigger problem. A 1.7 cent per kilowatt hour bump is small in isolation. Applied across July and August, when central air can account for a large share of a home’s electricity use, it adds up fast.

How the Massachusetts Electric Rate Increase Shows Up on a Metro West Bill

Your electric bill has two halves. Supply is the cost of the electricity itself. Delivery is what the utility charges to move it to your house. The August 1 change touched supply only, which is why plenty of homeowners will open their bill and find nothing different.

How to tell which group you’re in

Pull up your most recent bill and find the supply section.

• If it reads “Basic Service” with Eversource or National Grid as the supplier, you’re in the 26.6%, and your rate went up on August 1.
• If it names your town or a community electricity aggregation program, your rate is set by a separate municipal contract on its own schedule.
• If it names a third-party company you signed up with, you’re on competitive supply, and your rate follows that agreement.

Knowing which line you’re on tells you whether to expect a change at all. It also tells you whether shopping your supply rate is even worth an afternoon of your time.

What that works out to in dollars

Multiply the rate change by your monthly usage. A home running 1,000 kilowatt hours a month on Eversource basic service pays roughly $17 more. At 2,000 kilowatt hours, which is not unusual in August with central air running hard, it’s about $34. At 3,000, you’re near $51.

None of that is catastrophic by itself. It’s also avoidable if the reason you’re pulling 3,000 kilowatt hours is a system working harder than it should. A tune-up before peak season usually costs less than one month of that gap, and it catches the low-charge and airflow problems that quietly inflate every summer bill.

What Most Coverage Misses

Almost every story about August 1 framed this as a rate story. For most homeowners, it’s a usage story.

The rate gets set by wholesale gas markets and regulatory filings. You don’t control it. Your consumption is the half you do control, and in a Massachusetts summer the largest single lever is your cooling equipment. An oversized system short-cycles, burning power without pulling humidity out of the air. A system low on refrigerant runs longer to reach the same temperature. Ductwork leaking into an unconditioned attic cools the attic. All three land on the same bill line as the rate increase, and all three are fixable.

There’s a policy angle nobody connected, too. Governor Healey and both legislative chambers spent 2026 arguing over energy affordability, and one live question in Healey’s stated energy priorities is how much of your bill funds gas pipeline replacement versus efficiency programs. That fight is unresolved. Practically, it means the incentive money behind high-efficiency equipment upgrades could look different next year than it does now. If a replacement is already on your list, the current program year is the one you can count on.

Final Thoughts on the Massachusetts Electric Rate Increase

The August 1 Massachusetts electric rate increase is real, but it moved the supply rate only, and only for about one in four customers statewide. Check your bill’s supply line before you assume anything about your own account. And if your summer bills have been climbing for a few years no matter what rates did, the equipment is the likelier culprit, which makes it a fixable problem instead of a market you have to wait out.

We’re family owned, we’ve been working on Norfolk County and Metro West homes since 2014, and our techs aren’t paid on commission. Every estimate is written down before anything gets approved. If your AC is struggling this summer, request a free estimate and we’ll tell you straight whether it’s a repair or a replacement. Same-day appointments are available when scheduling allows, and 24/7 emergency service is there when the heat won’t wait.