⚡ New England storm season is here. Don't wait for the next outage — call (978) 957-3422 for a free estimate.

Authorized Generac Dealer · MA & NH

Standby Generator Installation in Massachusetts & New Hampshire

  • Whole-home Generac generators starting at $8,000 — automatic backup power, no manual action needed
  • Permits, gas coordination & inspection included — we handle everything start to finish
  • Based in Dracut — fast response times across northeastern MA and southern NH, no travel fees
  • 24/7 availability · Licensed Master Electricians · No subcontractors, ever
Licensed Master Electricians No Subcontractors Google Guaranteed Family-Owned Since 1979 Licensed & Insured
★★★★★
4.7 Rating · 900+ Google Reviews Trusted by 2,000+ MA & NH homeowners
Authorized Generac Dealer & Installer
Is your home ready for the next outage?

Signs You Need a Standby Generator

Most Massachusetts and New Hampshire homes lose power multiple times a year. For some households it's an inconvenience. For others it's dangerous. Here's when a standby generator stops being optional.

🏠

You Work From Home

Remote workers can't afford to lose internet or power to their home office. A generator keeps your connectivity and equipment running no matter what the grid does.

💊

Medical Equipment in the Home

Oxygen concentrators, CPAP machines, refrigerated medications — if anyone in your home relies on powered medical equipment, uninterrupted power isn't optional.

🌊

You Have a Sump Pump or Well

Older New England homes are prone to basement flooding during storms. A sump pump that loses power during a nor'easter means a flooded basement. A generator keeps it running automatically.

❄️

Heating or Cooling Stops Working

Gas furnaces, heat pumps, and central AC all require electricity to run. In a Massachusetts winter, losing heat for 24–48 hours isn't just uncomfortable — it can be dangerous.

🍖

Refrigerators & Freezers at Risk

A 24-hour outage can mean hundreds of dollars in spoiled food. A standby generator kicks on automatically within seconds so your fridge and freezer never miss a beat.

Frequent Power Outages

Northeastern MA and southern NH are among the most outage-prone regions in New England due to aging grid infrastructure and severe storm seasons. A standby generator eliminates the disruption permanently.

Generator Services We Provide Across MA & NH

Our licensed Master Electricians handle every aspect of generator work — from new Generac installations to transfer switches, portable hookups, and ongoing maintenance.

🏠 Whole-Home Standby Generator Installation

Full turnkey installation including generator, automatic transfer switch, all wiring, permits, gas coordination, and inspection. We handle everything start to finish.

⚡ Generac Generator Installation

As an authorized Generac dealer, we install and service the full Generac lineup across MA and NH. Warranty-backed installations from a certified dealer.

🔄 Automatic Transfer Switch Installation

Detects an outage and switches your home to generator power within seconds — no manual action needed. Required for all standby generator installations.

🔌 Portable Generator Hookup

Already own a portable generator? We install a manual transfer switch or interlock kit so you can safely connect it to your home's panel without backfeeding the grid.

🔧 Generator Maintenance & Service

Annual maintenance plans, diagnostics, battery replacement, and troubleshooting. Keep your generator ready for the next outage year after year.

⛽ Gas Line Installation

If your home needs a new gas line run to the generator pad, our licensed electricians coordinate the full scope including permits and utility work.

Adding a generator is often the perfect time to also upgrade your electrical panel. Learn about panel upgrades →

Why MA & NH Homeowners Choose Sylvester Electric

We aren't a franchise. We live and work in the same communities we serve. Here's what that means for you.

On-Time Guarantee

We arrive within the scheduled time window — every time. We respect that your schedule matters.

💰

Upfront Pricing

We give you a firm price before any work begins. No surprise hourly overages, no hidden fees.

👨‍👩‍👧

Family-Owned Since 1979

We treat your home like it's our neighbor's — because it is. Based in Dracut, serving the region for over 45 years.

📋

We Handle Everything

Permits, gas coordination, utility work, inspection — all included. You don't manage any paperwork.

Planning a standby generator installation?

A real person will answer your call. No AI agent, no hold music.

📞 (978) 957-3422 — Current wait: <2 min

What to Expect: Our Generator Installation Process

We walk every homeowner through this process before we start. No surprises, no confusion about what happens next.

1

Free In-Home Estimate

We visit your home, assess your electrical system and power needs, and recommend the right size Generac generator. You get a firm upfront price — no obligation.

2

Permit Filing

We handle all electrical and gas permits with your town's building department. Every generator installation in MA and NH requires permits — we manage it all so you don't have to.

3

Gas & Utility Coordination

We coordinate directly with your gas provider (Eversource Gas, National Grid, Liberty) and utility to schedule all connections. We manage the timeline on your behalf.

4

Installation Day

Our licensed Master Electricians install the standby generator, automatic transfer switch, and all connections with clean, organized workmanship. Most jobs are completed in one to two days.

5

Town Inspection

We schedule and pass the local building inspection so your installation is fully code-compliant and documented. This protects you and your home's value.

6

Final Testing & Walkthrough

We fully test the system to confirm it starts automatically during an outage, walk you through operation and maintenance, and answer every question before we leave.

Generator Installation Costs in Massachusetts & New Hampshire

We publish our pricing because we believe homeowners deserve to know what they're getting into before calling. Every home is different — these are the realistic ranges based on the jobs we complete across MA and NH.

Whole-Home Standby Generators

Permanently installed Generac generators with automatic transfer switch. Includes permits & inspection.

10 kW — Essential circuits $8,000 – $11,177
18 kW — Most homes $14,103 – $16,000
24 kW — Whole home $17,543 – $19,000
Precast generator pad $500 – $750

Portable Generator Hookups

Already have a portable generator? We connect it safely to your home's panel.

Interlock kit $250 – $350
10-circuit manual transfer switch $1,700 – $1,900
100-amp whole home manual transfer switch $1,100 – $1,300
200-amp whole home manual transfer switch $1,100 – $1,300
30–50 amp power inlet box $350 – $450

Generator Services & Maintenance

Keep your generator running reliably year after year.

Yearly maintenance $350 – $450
Diagnostics & troubleshooting $300 – $400
Battery replacement $300 – $400
Gas line installation $3,500 – $5,500

* Every home is different. Prices vary based on generator size, site conditions, whether a gas line extension is needed, and permit fees by municipality. Call us at (978) 957-3422 for a free in-home estimate — we give you an exact price before any work begins.

Standby Generator FAQ

Common questions from Massachusetts and New Hampshire homeowners.

How much does a standby generator installation cost in Massachusetts?
Whole-home Generac standby generator installations typically range from $8,000 for a 10 kW unit covering essential circuits to $19,000 for a 24 kW whole-home system. Portable generator hookups range from $250 to $1,900 depending on scope. If your home needs a new gas line run, that adds $3,500–$5,500. We provide firm upfront pricing before any work begins — no hourly overages, no surprises.
How long does a generator installation take?
Most whole-home standby generator installations are completed in one to two days. The timeline depends on generator size, site conditions, and whether a gas line extension is needed. We coordinate with your gas provider and utility in advance — gas utility scheduling can add time, and we manage that on your behalf.
Is a permit required for a generator installation in Massachusetts?
Yes — all standby generator installations in Massachusetts and New Hampshire require both an electrical permit and a gas permit. Sylvester Electric handles all permit filing and coordinates the inspection with your local building department. This is included in every job, not an add-on.
What size generator does my home need?
Generator sizing depends on your home's square footage, the appliances you want backed up, and your electrical panel capacity. A 10 kW unit covers essential circuits for most homes. An 18 kW unit handles most single-family homes in Massachusetts. A 24 kW unit provides full whole-home coverage including HVAC and large appliances. We perform a load calculation during your free estimate and recommend the right Generac unit for your specific needs and budget.
What is the difference between a standby generator and a portable generator?
A portable generator must be manually started, runs on gasoline, and requires refueling. A standby generator is permanently installed outside your home, connects directly to your natural gas or propane supply, and starts automatically within seconds of a power outage — no action required from you. Standby generators are safer, more convenient, and provide whole-home coverage.
Is Sylvester Electric an authorized Generac dealer?
Yes. Sylvester Electric is an authorized Generac dealer and installer serving Massachusetts and New Hampshire. We install and service the full Generac lineup, and our installations are covered by Generac's manufacturer warranty.
Do I need a panel upgrade before installing a generator?
Not always — many homes can accommodate a standby generator with their existing panel. If your panel is undersized or outdated, we may recommend upgrading at the same time, which is also more cost-effective since we're already coordinating permits and utility work. We assess this during your free in-home estimate.
Do you offer emergency generator service in Massachusetts?
Yes — Sylvester Electric offers 24/7 emergency electrical service across Massachusetts and New Hampshire. We're based in Dracut with fast response times throughout the region. Call (978) 957-3422 any time. A real person will answer.

What MA & NH Homeowners Say

Over 900 Google reviews from homeowners across Massachusetts and New Hampshire.

★★★★★

"Lost power on a Sunday night. Tech was here in 45 minutes. Professional, explained the issue clearly, and fixed it on the spot. Feels good to have a reliable electrician in the area."

James D.
Dracut, MA
★★★★★

"No hidden fees, which was refreshing. They gave me a price for the generator and stuck to it. Clean work, no mess left behind. Highly recommend."

Jen K.
Lowell, MA
★★★★★

"The expertise and care applied to both the installation and the wiring has been first rate. We have been impressed by the efficiency and ease of contact with the team."

Anna K.
Massachusetts

⭐ Read All 900+ Reviews on Google

Standby Generator Installation Across MA & NH

Based in Dracut, MA — we serve homeowners across northeastern Massachusetts and southern New Hampshire with fast response times and no travel fees.

Don't see your town? We serve a wide area across northeastern MA and southern NH. Call (978) 957-3422 to confirm we cover your location.

Get Your Free Generator Estimate

A real person will answer your call. We'll assess your home, recommend the right size Generac, and give you a firm price before any work begins.

Current wait time: under 2 minutes · Licensed & Insured · Authorized Generac Dealer

Other Electrical Services We Provide

Generator installations are often completed alongside other electrical upgrades. Our licensed Master Electricians handle it all.

GET YOUR FREE

GENERATOR QUOTE

Whole Home Generator

old fuse box electrical panel

Transfer Switch Installation

200 amp electrical service upgrade

What Our Customers are Saying

Technician arrived on time, he repaired the problem quickly and efficiently and I was happy with the cost ...not overcharged. I have already recommended the company to my friends and relatives.

★★★★★
Judy D.

They installed smoke and carbon monoxide detectors and two light fixtures. They were easy to work with and very professional.The technician was personable and knowledgeable.

★★★★★
Elena C.

The expertise and care applied to both fixing and installing new electrical wiring has been first rate. We have been impressed by the efficiency and ease of contact with the team. We recommend Sylvester for anyone looking for top tier and reliable electrical work at a fair price.

★★★★★
Anna K.