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Verified Reviews for Generator Install pros in Hilo, HI

*The Angi rating for Generator Install companies in Hilo, HI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Hilo, HI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on March 25, 2026

Find Generator install pros in Hilo

Avatar for DKN Electrical
DKN Electrical
4.9(
95
)

Serving Hilo, HI and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Small jobs welcome

Credit card accepted

"Totally awesome company to work with. They will definitely be the first company I contact for my electrical needs!"
OVERVIEW OF KITCHEN PLUS LIVING
KITCHEN/LIVING
Upgrade of Fixtures
Upgrade of Fixtures
Upgrade of Fixtures

+6

Response time1 day
Response rate93%
2 neighbors recently requested a quote
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Avatar for Ultimate Electric LLC
Ultimate Electric LLC
4.3(
6
)

Serving Hilo, HI and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Best electric company in Kona! I’m absolutely blown away by the level of professionalism and dedication Ultimate Electric provided me on many of my renovation projects. 100% satisfied with Daniel and his crew. He is always on time every time, consistently fast, easy to deal with and fairly affordable. I highly recommend!"
Additional Photos
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+34

2 neighbors recently requested a quote
Recommended by100%of homeowners
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Reiny P K Carvalho
New to Angi

Serving Hilo, HI and surrounding areas

In business since 2023

Free estimates

Credit card accepted

We are 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.

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Big Patriot Home Remodeling
New to Angi

Serving Hilo, HI and surrounding areas

In business since 2020

Free estimates

Emergency services offered

Big Patriot Home Remodeling 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.

Response time20 mins
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Blaz's Handyman Services
New to Angi

Serving Hilo, HI and surrounding areas

In business since 2021

Credit card accepted

Offers commercial services

Blaz's Handyman Services, 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.

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FIX'd The Handyman
New to Angi

Serving Hilo, HI and surrounding areas

In business since 2021

Free estimates

We take great pride our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

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Generator Install questions, answered by experts

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. 

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

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

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

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

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

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

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

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.

The Hilo, HI homeowners’ guide to generator installs

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

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