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Avatar for Paul R. Bachand Electric
Paul R. Bachand Electric
5.0(
14
)

Serving Greenfield, MA and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"Paul was excellent to work with. I needed an exterior garage wired. He was prompt, clean and a great value. I am looking to do a service upgrade for an electric car charger and already have been in touch with Paul to preform the work. Great to have a go to electrician anytime I need work done!"
Remodel/ gut for space above garage for a raised ranch home
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+28

Response time2 days
18 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for JCamp Electric, Inc.
JCamp Electric, Inc.
5.0(
15
)

Serving Greenfield, MA and surrounding areas

Approved

In business since 2020

Free estimates

Small jobs welcome

"Jesse is very friendly and we are so happy with the dining pendant light and 3 ceiling fans he installed. Beautiful job and very affordable."
Oh NO!
OH NO!
Response time1 day
5 neighbors recently requested a quote
Recommended by76%of homeowners
Avatar for Paciorek Electric Inc
Paciorek Electric Inc
4.7(
30
)

Serving Greenfield, MA and surrounding areas

Approved

In business since 1997

Emergency services offered

Credit card accepted

"Paciorek Electric was terrific at getting out to us quickly. MA was slammed with power outages (10/16/19) . Our generator was down (we hadn't had it serviced in years) and they came out right away to do a full service, repair, replaced battery, and spark plugs. We're up and running again. We will use them again for a regular service call when it's due."
Additional Photos
Additional Photos
Response time3 days
2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Thomas A. Jennette Electric
Thomas A. Jennette Electric
4.5(
10
)

Serving Greenfield, MA and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"One thing I really liked about his work was the attention to detail and he made sure things were done right, not just fast. He goes out of his way to make the installation easy to work on in the future if need be. And it is very neatly done."
Bathroom remodel
Kitchen Remodel
Sub-panel move
Main Service Drop
Response time1 day
Recommended by100%of homeowners
Avatar for Northeast Power, LLC
Northeast Power, LLC
5.0(
3
)

Serving Greenfield, 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

47 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Andrus Power Solutions
Andrus Power Solutions
New to Angi

Serving Greenfield, MA and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

At Andrus Power Solutions, we provide expert sales, installation, and service of Generac home standby generators across Massachusetts and parts of New York and Connecticut. As a fully licensed and insured, family-owned business, we pride ourselves on delivering reliable power solutions with exceptional customer care. Whether you're looking for whole-home backup, annual maintenance, or emergency support, our team is here to help ? and now offering 0% financing for 25 months. Power on, worries off.

Generator Repair
Response time6 days
6 neighbors recently requested a quote
Avatar for Mac & Son Electric LLC
Mac & Son Electric LLC
New to Angi

Serving Greenfield, MA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Mac & Son Electric LLC is a company that specializes in panel and service upgrades, electrical remodeling, troubleshooting, interior and exterior lighting, commercial and residential, and any electrical projects or issues.

200-amp Service Upgrade
Showing 1-10 of 32
Generator Install questions, answered by experts

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

While standby generators provide essential backup power, they can fail when you need them most due to lack of maintenance, fuel supply issues, dead batteries, electrical problems, or improper installation. To avoid costly failures, professional installation and regular maintenance are crucial. Licensed technicians ensure safety, uphold warranty requirements, comply with regulations, and provide expert servicing.

You may need a permit for a portable generator if you’ll be installing a transfer switch for your primary residence or similar work. Otherwise, a permit for other uses may not be necessary. Check your local building codes or ask a local generator installer for more information about your local regulations.

The Greenfield, MA homeowners’ guide to generator installs

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