Generator Installation in Willis, TX
Willis, TX offers peaceful living with close access to Lake Conroe and the growing Montgomery County area. Grasten installs and services standby generators here from our Conroe facility, part of our Houston service area.
Willis Outage History
Why Willis Homeowners Act
When Hurricane Beryl came through in July 2024, 247,000 Entergy Texas customers were without power by the first evening, and about 110,000 Montgomery County customers were still out two days later. Entergy's Conroe Network, which covers Conroe, Montgomery and Willis, still had about 57,000 customers out on the third day. Winter Storm Uri in February 2021 put 57,966 Entergy customers in Montgomery County in the dark on the afternoon of February 15, and about 45,000 were still out the next morning. Hurricane Ike in September 2008 cut power to about 390,000 Entergy Texas customers, about 99 percent of its customers.
Willis at a Glance
Power Outage Profile
The local details that shape your install: who runs the grid, who issues the permit, and which gas partners are in your area.
Entergy Texas serves Willis from its Conroe Network and restores outages. One company bills you and runs the lines; there is no retail provider to choose.
The City of Willis Building Permits and Inspection Division issues the permit online through GovWell and inspects to the 2023 National Electrical Code. Lake Conroe addresses outside the city go through Montgomery County. Grasten pulls the permit with a licensed electrician and schedules the inspections.
CenterPoint Energy runs the gas mains in Willis and its environs. Streets without a main use a propane tank.
Hurricane Beryl, July 2024: 247,000 Entergy Texas customers were without power on the first evening, and about 110,000 Montgomery County customers were still out two days later.
Why Willis Chooses Grasten
What Makes Us Different
Multi Brand Dealer
Where a CenterPoint gas main does not reach a Willis street, the generator runs on propane from a tank on the property. Either way, we quote Generac, Kohler, Cummins and Briggs & Stratton, and you can hear all four in our showroom before choosing.
Four Brands, One Recommendation
12 Year Power Plus Warranty
Three days after Hurricane Beryl, roughly 57,000 customers on Entergy's Conroe Network, Willis included, were still waiting for power. Buy a Generac air-cooled unit from Grasten and twelve years of full coverage come with it, exclusive to Canter Power Systems brands.
12 Years of Full Coverage
Customized Mobile Fleet
From our Conroe facility, Willis is about 12 miles up the road. Technicians are licensed, factory trained and on our own payroll, and their vans carry the repair parts that come up most. Call at any hour and a real person picks up.
Ready to Roll
Typically 2 to 4 weeks from estimate to power on, depending on City of Willis permit timelines. Grasten pulls the permit with a licensed electrician and schedules the inspections. See all six differentiators and the full process on the Houston page ›
Willis Pricing
What Does a Generator Cost in Willis?
Whole home installs in the Houston area typically run $7,000 to $25,000+. Here's where most Willis homes land.
Essential circuits (lights, fridge, AC unit)
Most homes under 3,000 sq ft (full house)
Larger homes, multiple HVAC zones
Large homes, home offices, medical equipment
Prices include equipment, in-house installation, transfer switch, City of Willis permit fees, and our 12-year warranty. Where a CenterPoint gas main reaches your street, a natural gas connection typically adds minimal cost compared with a propane tank installation.
Most Willis homes on city gas service run natural gas. CenterPoint Energy Gas covers most of the metro, and the generator pulls off the same line that already feeds the house.
Houston Hub
Part of Our Houston Region
Full pricing guide, the four-brand comparison, and the complete regional FAQ.
Also Serving Near Willis
Also serving Panorama Village, New Waverly, Coldspring and the rest of Montgomery County.
Frequently Asked Questions
Willis Generator Questions, Answered
Do I need a permit to install a generator in Willis?
Yes. Inside the city the permit comes from the City of Willis Building Permits and Inspection Division at 501 West Montgomery Street, applied for online through the city’s GovWell portal as one digital PDF set; the city has adopted the 2023 National Electrical Code. Most of the 77378 mailing area is unincorporated Lake Conroe subdivisions and goes through the Montgomery County Permit Department in Conroe. Grasten pulls the permit with a licensed electrician and schedules the inspections.
What knocks out power in Willis?
Hurricanes and summer storms on the overhead lines, and the occasional grid failure. When Hurricane Beryl came through in July 2024, 247,000 Entergy Texas customers were without power by the first evening, and about 110,000 Montgomery County customers were still out two days later. Entergy’s Conroe Network, which covers Conroe, Montgomery and Willis, still had about 57,000 customers out on the third day. A standby generator starts on its own within seconds and runs until Entergy restores service.
Is natural gas available at my Willis address?
Often, yes. CenterPoint Energy serves Willis. Where there is no gas main on your street, the generator runs on propane from a tank on your property. We confirm which applies during the free estimate.
Will my Willis HOA allow a whole home generator?
Many HOAs require architectural approval before installation. Grasten Power prepares the application package and goes through the review process for you, so you are not chasing board approvals on your own.
How fast can Grasten reach Willis for repairs?
Willis is served from our Conroe facility at 10890 TX-242, about 12 miles away. Our service vehicles are built out for first visit repairs and stocked with the parts that come up most, and our dispatch runs 24/7 with a live phone.
Get Started
Prepare Now Before the Next Hurricane
Free Willis estimate. We pull the permits, then install and service your generator.