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  • Average homeowner rating star icon4.5
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  • Verified reviews icon35
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Find Generator install pros in Rosharon

Avatar for A & A GenPro Electrical
A & A GenPro Electrical
4.3(
67
)

Serving Rosharon, TX and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"GenPro installed a Home Generator for us. Andrew Spitzmueller and his team were dependable and reliable. Did what they said they would do. When they encountered roadblocks with sub-contractors and permit inspectors, they worked diligently to resolve the situation. They are honest and trustworthy people. Highly recommend them."
Demar Install
McDermott
Demar Install
Cornell
30 kW

+3

Response time10 hrs
1 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for 3 Guys Electric & Insulation
3 Guys Electric & Insulation
4.6(
159
)

Serving Rosharon, TX and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"Outstanding service and top notch expertise. Install everything to code and corrected everything from the previous contractors. Did exactly what they quoted and installed everything with a clean and professional look Definitely recommend to anyone who needs electrical work"
Water Heater Wrap
Radiant barrier
Attic stair cover
Radiant Barrier/ blown in insulation
Reseal A/C duct

+44

Response time2 days
11 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for A1 Plus Electrical & Generators
A1 Plus Electrical & Generators
4.3(
1,359
)

Serving Rosharon, TX and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"A1 Plus Electrical had the best price, and the electricians and plumber did excellent work! The only problem experienced was that it took 5 to 6 weeks for A1 Plus to get the permits approved after stating that they could get the permits approved and install the generator within 2 weeks. All other companies couldn't do the work for at least 2 months or longer! I had to contact A1 Plus general manager to get things moving after several permit submissions were rejected by the city. A1 Plus mitigated this time inconvenience by installing an electrical outlet in the garage at no cost, and once the permits were approved, everything was done within 7 days. Permits were approved on Friday, and installation started on the following Tuesday, and city permit inspections were done on the following Friday! All within one week! Would I hire A1 Plus to install my generator in the future? YES!"
Commercial Jobs
Commercial Jobs
Commercial Jobs
Commercial Jobs
Commercial Jobs

+48

Response time1 day
62 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Storm Guardian Generators
Storm Guardian Generators
4.0(
12
)

Serving Rosharon, TX and surrounding areas

Approved (Corporate)

In business since 2006

Free estimates

Emergency services offered

"Ronnie, Pam, Cindy and crew were wonderful to work with.  There are several steps to the process, given potential permits needed and coordination of service dates with Center Point Energy.  They kept me informed and walked me through the process at each step. 
I got bids from three companies.  Storm Guardian's bid was the lowest and included the most features.  It included Mobile Link, which the other two did not even mention.  Being able to remotely monitor the generator and receive alerts on my IPhone and on-line when the generator turns on/off is great.  Almost as important to me, they came through on their promise of near turn key.  The other bids had me doing a lot of the leg work with Center Point.  With Storm Guardian, I only had to make two phone calls and be home half a day to authorize Center Point's replacement of the gas meter. 
I am very pleased with Storm Guardian and can recommend them without reservation.  Great work, great people.
"
Additional Photos
48 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Strategic Electrical Solutions, LLC
Strategic Electrical Solutions, LLC
5.0(
24
)

Serving Rosharon, TX and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"Fantastic experience. I called at 11:00a for a generator start up and they were there by 2p and finished in less than an hour. Professional, experienced, and friendly team. Will use them for all of my electrical needs moving forward. A+"
20 kw Cummins
Tesla Chargers in Apartment Parking Garage
Tesla Chargers in Apartment Parking Garage
20 KW Cummins
24 KW Generac

+7

Response time4 hrs
Response rate96%
8 neighbors recently requested a quote
Avatar for E. A. Solar & Home Services, LLC
E. A. Solar & Home Services, LLC
5.0(
18
)

Serving Rosharon, TX and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

We are a dedicated team of individuals committed to bringing the best possible customer service and quality of work. We specialize in residential and commercial electrical. We strive to stand out from the competition by providing the best customer experience. Give us a try, you won't be disappointed you called!

Solar system
Solar system
Solar system
Solar system
Solar system

+5

5 neighbors recently requested a quote
Recommended by61%of homeowners
Avatar for GRIDLY ELECTRIC
GRIDLY ELECTRIC
5.0(
2
)

Serving Rosharon, TX and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

At GRIDLY ELECTRIC, we don’t cut corners, we cut your odds of calling someone twice. Texas-licensed (TDLR #41508), family-run residential electricians serving Katy and the greater Houston area. Safe, reliable, code-compliant work with honest pricing. All backed by a 5 year workmanship warranty

LOGO
Smart Panel
200A Meter Main
New 200A Panel
Transfer Switch

+8

13 neighbors recently requested a quote
Avatar for Otovo
Otovo
3.5(
8
)

Serving Rosharon, TX and surrounding areas

Approved

In business since 2012

Emergency services offered

Small jobs welcome

Otovo US is a home-energy partner helping homeowners monitor, maintain, and optimize solar and battery systems. Our platform provides 24/7 monitoring, fast repairs for solar, batteries, and generators, and simple subscription plans starting at $9/month. Customers can also lower electricity costs by up to 50% through solar buyback bill credits.

15 neighbors recently requested a quote
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Generator Install questions, answered by experts

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.

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.

Many services include assembling the unit and securing it in the window. Confirm with your provider.

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.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

The Rosharon, TX homeowners’ guide to generator installs

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