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Avatar for Generator Supercenter of Maine
Generator Supercenter of Maine
4.6(
40
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Wales, ME and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Drew and the entire crew made this experience seamless. The installers were polite, friendly, competent and and tidy. The pre and post support was fantastic, the expectations around logistics, installation timing and ongoing service support was spot on. These guys are pros and the solution cost was clearly the best in my search for authorized service providers of Generac generators. Hire them you won't go wrong. Vin M Dover NH"
Generator Install
18KW Installation
Preparation for the day
Photos
Response time2 days
Response rate100%
73 neighbors recently requested a quote
Generators of Maine, Inc.
5.0(
6
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Wales, ME and surrounding areas

Approved

In business since 2014

Free estimates

Offers commercial services

"Great company! Very professional, attention to detail and incredible thorough in all aspects of the installation and explanation of install afterwards. I would higher this company every day 24/7 and available to always answer questions."
Response time4 hrs
Recommended by80%of homeowners
Affordable Electric
4.7(
101
)
Portable Generator - Install

Serving Wales, ME and surrounding areas

Approved

In business since 2009

Free estimates

Customers say: True professional

"I needed a level 2 charger installed for my new EV, so this was very short notice. Jeff came up right away to examine the property (and this was a Sunday). The very next day he came up with his helper and got started on the project. Very thorough, professional, very friendly, on time, etc. I absolutely recommend him, and any further electrical projects I need done he will be the first person I call."
Response time1 day
2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Parker Electric LLC
Parker Electric LLC
5.0(
14
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+2 more

Serving Wales, ME and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Small jobs welcome

"I could not ask for a better electrician than Noah Parker. He has come through for me big-time on more than one occasion. Noah installed my generator & showed me how to use it; diligently diagnosed & fixed complex electrical problems in my older mobile home; & even fixed my lawnmower! Not only is Noah an expert at his craft. He is utterly kind, patient, trustworthy, fair, & decent. As a clueless first-time homeowner, I am SO grateful for Noah. I highly recommend him."
Generator Install
Response time9 hrs
Response rate93%
9 neighbors recently requested a quote
Avatar for Casco Bay Generators LLC
Casco Bay Generators LLC
5.0(
5
)
Fixed Generator - InstallFixed Generator - Repair

Serving Wales, ME and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

We are proud to be a Veteran-operated, Titanium Level Kohler® licensed and insured generator dealer. We teamed with Kohler® to give you peace of mind that you are working with a dealer-trained, factory-authorized provider to handle these appliances. We offer all Kohler® and Generac warranties and maintenance services. These are the industry’s best products for backup protection at your home or office.\nWe are also proud to work with Efficiency Maine, offering discounts, rebates, loans, and other initiatives to promote high-efficiency equipment that help Maine’s homes and businesses reduce their energy costs and lower their greenhouse gas emissions.\nProfessionally installing a standby generator and/or heat pump for your home or business is one of the best investments you can make. .\nWe at Casco Bay Generators & Heat Pumps keep the power on 24 hours a day, 365 days a year.

Standard installation.
Response time2 days
Response rate92%
10 neighbors recently requested a quote
Avatar for Origin Energy, LLC
Origin Energy, LLC
4.6(
11
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install - For Business

Serving Wales, ME and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Warranties offered

"Evan could not have been more professional. As a realtor , I have worked with dozens of electricians and hundreds of tradesman., some good— some bad. Evan was a good one . Prompt , communicative , and reasonable . I will use them again They required a kitchen, a bathroom, and wired in a new furnace . They also installed a generator . All projects were with in budget and on time . Very rare today"
Completed system
First half of panels
First half progress
Response time2 days
Response rate99%
13 neighbors recently requested a quote
Avatar for Veteran Wire Electric LLC
Veteran Wire Electric LLC
5.0(
5
)
Fixed Generator - InstallGenerator - Install - For BusinessGenerator - Repair - For Business

Serving Wales, ME and surrounding areas

Approved

In business since 2024

Credit card accepted

VETERAN WIRE ELECTRIC LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Panel
11 neighbors recently requested a quote
Showing 1-10 of 38
Generator Install questions, answered by experts

Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a transfer switch (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.

Costs depend on generator type, labor, and additional wiring or transfer switch requirements.

It is safe to run a generator continuously, but you must follow safety protocols to ensure personal and home safety. Read the manufacturer’s instructions for specific recommendations, but the general recommendation is to turn generators off overnight or when you’re away from the house. Overworked generators can pose a fire hazard and if your generator is not in a well-ventilated area, running it continuously could lead to carbon monoxide poisoning.

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.

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

The Wales, ME homeowners’ guide to generator installs

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