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Best generator install pros near Richmond, MA

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Top-Rated Generator install pros in Richmond - Updated Nov 2026

Avatar for Slingerland Electrical Services
Slingerland Electrical Services
4.9(
54
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Richmond, MA and surrounding areas

Approved

In business since 2011

Free estimates

Offers commercial services

"Very patience and considerate. Advised me on which generator to get that best fit my needs and budget, assembled it, gave me a tutorial on how to use it, and installed the proper electrical system to accommodate. Will hire again!"
9 neighbors recently requested a quote
Recommended by69%of homeowners
Avatar for Northeast Power, LLC
Northeast Power, LLC
5.0(
3
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Richmond, MA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"My solar inverter stopped working in my existing solar system, and since my original installer went out of business, I had a hard time finding someone to replace the inverter provided by SolarEdge. It was a small job, and most large companies weren’t interested, while those willing to help were booked out for at least a couple of months. I contacted Justin, and he replaced the inverter within just a few days. He was very friendly, efficient, and offered a very reasonable price. Justin was also extremely knowledgeable, explained everything clearly, and kept me updated throughout the process. He arrived on time, completed the work neatly, and made sure the system was running perfectly before leaving. Overall, his professionalism, honesty, and dedication to customer satisfaction made the whole experience stress-free and smooth."
Northeast Power
Northeast Power
Northeast Power
Northeast Power
Northeast Power

+2

21 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Andrus Power Solutions
Andrus Power Solutions
5.0(
1
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Richmond, MA and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"We had a great experience with Andrus. Tony came out before our Kohler generator installation to clean up our electrical panel and did an incredibly thorough job. Everything was left clean and organized. The generator installation itself went very smoothly. The team was professional, knowledgeable and respectful of our property, and everything was explained clearly along the way. We're very happy with the finished installation and feel much better knowing we're prepared for the next outage. Would definitely recommend Andrus!"
Generator Repair
Response time6 days
Avatar for Comalli Electric Inc
Comalli Electric Inc
4.4(
34
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Richmond, MA and surrounding areas

In business since 1981

Free estimates

Emergency services offered

"EXCELLENT! We needed lights installed around the outside of our house. Comalli’s electricians are very professional, neat and friendly. They will be returning for another job inside the house as well. We will be contacting Comalli for any and all future electrical work needed."
Recommended by100%of homeowners
Showing 1-10 of 22
Generator Install FAQs, answered by experts

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

Natural gas and electricity rates vary significantly based on location, and pricing can change over time, too. It’s possible that in locations where natural gas is particularly inexpensive, it will cost less than grid-based electricity will. However, you should also factor in the generator’s initial costs and maintenance needs, as well as its noise level and if it can comfortably power all your home appliances.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

The Richmond, MA homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.