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TRUSTED BY JOHNSTON, RI HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon10
    Verified generator installs reviews

Find Generator install pros in Johnston

Avatar for Rhode Island Generator
Rhode Island Generator
4.7(
56
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Johnston, RI and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"I could not have made a better choice of a company to purchase and install my standby generator from . From the day I called for a quote for a standby generator to the time it took to complete the installation (about 3 weeks) everything was done in a courteous and professional manner. The work was faultless and the cost was less then I had anticipated."
Generator Installs
20 KW Generac Generator
Generator Installs
20KW Generac Generator
Generator Installs

+14

Response time1 day
16 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Cotti-Johnson HVAC, Plumbing and Electrical RI
Cotti-Johnson HVAC, Plumbing and Electrical RI
4.8(
27
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+4 more

Serving Johnston, RI and surrounding areas

Approved (Corporate)

In business since 1948

Free estimates

Emergency services offered

"Very well. These guys, Gil, Luis, Jake and Nick, did a great job with our 2 day installation, they were professional, friendly, answered questions easily, protected the indoor environment (drop cloth, ppe etc), and reassembled and thoroughly cleaned everything afterward. Look forward to contracting with them again for any other large job."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+40

Response time7 hrs
21 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Champion Electrical Services Inc
Champion Electrical Services Inc
5.0(
54
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Repair+2 more

Serving Johnston, RI and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

At Champion Electrical Services, we believe homeowners deserve better. No more no-shows, rushed work, or upsells you don't need. We built this company to do things right - with respect, craftsmanship, and pride. Every project is treated like it's being done in our own home: clean, code-compliant, and built to last. Whether you need a panel upgrade, EV charger, generator, or quick repair, we show up when it counts and earn your trust every time. \nLicensed, insured, and proudly serving MA & RI. \nWhen the lights go out, don't call just anyone. Call the Champ.\n\n(774) 331-3500 \nCalltheChamp.com \[email protected]

My jobs
My jobs
My jobs
My jobs
My jobs

+17

221 neighbors recently requested a quote
Avatar for Botelho & Sons Electric
Botelho & Sons Electric
5.0(
48
)
Portable Generator - Install

Serving Johnston, RI and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Emergency services offered

"I can’t recommend Botelho and Sons Electric highly enough. From start to finish, the experience was outstanding. They were punctual, neat, and completely reliable, showing up exactly when they said they would and keeping the work area clean and organized throughout the entire project. I had a 200-amp panel upgrade, lines run to a pool & hot tub, copper wire installed for the pool and the connection for our generator - everything was done to code, with obvious skill and attention to detail. Out of 6 electricians I got quotes from, Ryan offered the best price without cutting any corners. On top of that, both he and his employee were incredibly knowledgeable and professional. Bonus points for being amazing with my 130 lb Cane Corso, who is usually suspicious of strangers. It was clear they were comfortable around dogs and respectful of my space, which made the whole process that much smoother. If you want high-quality work from someone you can trust, I wouldn’t look any further!"
Response time9 hrs
29 neighbors recently requested a quote
Recommended by4%of homeowners
Avatar for Electricians R Us
Electricians R Us
4.8(
15
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Johnston, RI and surrounding areas

Approved

Super Service Award Winner

In business since 1987

Free estimates

Warranties offered

"Called David for an Emergency Service on a Saturday night, he came out immediately restored temporary power for the night as came back Sunday morning and updated my Service! He went above and beyond for me, was professional and fair and took pride in his work! I highly Recommend Electricians R us and David to anyone looking for an Electrician! 5 ⭐️’s. T.y David!!"
Electrical services
Electrical services
Electrical services
Additional Photos
Additional Photos

+6

23 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Cox Electric, LLC
Cox Electric, LLC
4.7(
10
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business

Serving Johnston, RI and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Everyone we dealt with was friendly, responsive and knowledgeable. From our initial call to explore a generator through purchasing and installation, everyone at COX demonstrated exceptional and timely customer service. Their experienced team of technicians were there on time when they said theyâ d be there. They provided timely notifications and clearly communicated throughout every step of the installation process. We were impressed with their work ethic and the results."
Generac Installation
Wood surround
Block surround
Response time2 days
37 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for ABN Electric LLC
ABN Electric LLC
5.0(
9
)
Portable Generator - Install

Serving Johnston, RI and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"I highly recommend Ben @ ABN for your electrician needs. I hired ABN to replace outdated two-prong outlets with three-prong GFCIs, and install a completely new outlet in my bathroom, and they did an incredible job in no time. Their professionalism, skill, prices, and good attitude were excellent. I will be hiring ABN for all of my future projects too. Thanks!"
Response time50 mins
Response rate97%
1 neighbors recently requested a quote
Avatar for Ryan Silvia
Ryan Silvia
3.8(
17
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+2 more

Serving Johnston, RI and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"The owner of this business is hard working man who gets the job with no mistakes. He fixes what is needed and will make sure that everything is how itâ s supposed to be. Definitely would recommend him if you need any type of electrical work done."
Panel upgrade
Panel upgrade
Panel upgrade
Panel upgrade
Smart thermostat upgrade

+1

Response time7 hrs
Response rate90%
7 neighbors recently requested a quote
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Showing 1-10 of 76
Generator Install questions, answered by experts

If you’re deciding between a solar battery versus a generator for the best backup power solution, you can take a few factors into consideration. Solar batteries are quiet while generators can be quite loud. Generators have a lower up-front cost, but they require fuel and ongoing maintenance while solar batteries are more expensive but don’t have many ongoing costs.

The average cost to install a home generator is $5,200, but total costs can range from $500 to $18,000 or more. The final price depends on several factors, including the generator's size, type, brand, fuel source, and the cost of labor and assembly. The generator's size is the most significant cost factor, as units that can power larger homes with higher energy demands cost more.

Cost breakdowns by generator type are typically as follows:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500–$2,000

  • Partial-Home Generators (9kW–20kW): $2,000–$6,500

  • Whole-House Generators (22kW–48kW): $5,000–$18,000

To ensure you get the right size unit for your needs without overpaying, consider hiring an electrician to calculate the electrical load of your essential appliances. It is also recommended to get at least three quotes from qualified installers to find the best fit for your budget.

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.

While natural gas generators are costly, they’re a great option for standby power due to the reliability of natural gas as a fuel source. Unlike other fuels, natural gas is delivered through underground pipes, making outages extremely rare and less likely to be affected by the elements. As long as the area isn’t prone to earthquakes, they offer an unlimited supply of natural gas that doesn’t degrade over time or require storage in tanks.

Setting up utilities on a vacant property usually takes at least a few months, or between 6 weeks to 16 weeks. This process requires working with the local planning and zoning department, hiring a building contractor or engineer to design the utility layout, securing permits, laying the lines, and connecting the utilities.

The Johnston, RI homeowners’ guide to generator installs

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