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*The Angi rating for Generator Install companies in Kapaa, 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 Kapaa, 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 June 19, 2026

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Rapozo electric
New to Angi
Portable Generator - Repair

Serving Kapaa, HI and surrounding areas

Approved

My name is Micah, and I was born and raised on Kauai. I bring over ten years of hands-on experience in the electrical trade, working on a wide range of residential and commercial projects. Over the years, I’ve developed a strong understanding of installation, maintenance, and troubleshooting, along with a commitment to doing safe, high-quality work. Growing up on the island has also given me a solid appreciation for the local community and the unique demands of working in Kauai’s environment.

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Avatar for True Power Electrical Services LLc
True Power Electrical Services LLc
5.0(
25
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Kapaa, HI and surrounding areas

In business since 2021

Free estimates

Emergency services offered

"Where do I start.... communication was excellent, the price was very reasonable, and most important, the technician who completed the repair obviously knew exactly what he was doing (and was professional and nice!) I am highly recommending True Power Electric to anyone."
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+19

Recommended by100%of homeowners
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Generator Install questions, answered by experts

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you’ll have to pay between $400 and $2,500 to have the transfer switch installed, you’ll recoup that amount later on when you don’t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect hook up of a generator to your home. 

If your home already has a grinder pump and you’re still noticing issues (like frequently clogged toilets and sinks), it could be time to upgrade your grinder pump. Start by checking your existing horsepower. If there are four or fewer people living in your home, using a 1/2-horsepower grinder pump should be sufficient. Larger households should consider investing in a 1-horsepower grinder pump to maximize wastewater removal efforts.

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

The Kapaa, HI homeowners’ guide to generator installs

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

See all articles