Sound Power
Verified Pro
8½+ years online5.0(11)
Generator Installation in Seattle, WA
Compare 27 generator installation contractors near you in Seattle and surrounding area with an average rating of 4.8/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 22, 2026
Most pros respond within 2–24 hours
Verified Pro Installers
soundpowerllc.com
Auxiliary Engine & Generator Services
Verified Pro
~11 years online4.9(13)
Galaxy Electric & Solar LLC
Verified Pro
17 years online4.9(209)
Mirsky Electric
Verified Pro
22+ years online4.9(75)
Kitsap Diesel & Generator Repair
Verified Pro
5½+ years online4.6(93)
Other Businesses in This Area
Generator Supercenter of Puget Sound
5.01½+ years onlineW E Electric
5.020+ years onlineBrechtech Services
4.93+ years onlineClean Energy Innovators
4.93½+ years onlineEco Electric, Plumbing, Heating and Air
4.98½+ years onlineGeneratech Inc
4.92½+ years onlineHatton Power & Propulsion
4.93+ years onlineKonsker Electric
4.96+ years onlineRock Electric
4.9~7 years onlineWashington Generators LLC- Woodinville
4.911½+ years onlineEvergreen Home Heating and Energy
4.817+ years onlineGo Green Heating AC & Electric
4.810½+ years onlineWashington Generators LLC
4.811½+ years onlineMER Equipment
4.727½+ years onlineArtisan Electric
4.617½+ years onlineKeithly Electric Co
4.625½+ years onlineReign City Electric
4.6Mr. Electric of Greater Seattle
4.530+ years onlineNorthern Lights Power & Energy
4.5~29 years onlineN C Power Systems
4.4~29 years onlineGenerator Installation in Nearby WA Cities
Other Services in Seattle
Access Control & Intercom(33)Alarm System Installation(25)Appliance Installation(20)Artificial Turf Installation(27)Automotive Installs(1)Concrete & Paving(35)Deck & Patio Building(32)Electrical Services(24)EV Charger Installation(16)Fencing & Gate Installation(26)Fire Protection & Sprinklers(31)Garage Door Installation(23)
About Generator Installation in Seattle
Generator installation ranges from portable transfer switch setups to whole-home standby generators that start automatically during power outages. Standby generators connect to your electrical panel and run on natural gas or propane.
Typical costs: A transfer switch for a portable generator costs $500–$1,500 installed. Whole-home standby generators (Generac, Kohler) typically run $5,000–$15,000 fully installed including the concrete pad, gas line, and electrical connections.
Common projects include:
- Whole-home standby generator installation
- Transfer switch installation for portable generator
- Generator maintenance and load testing
- Natural gas line connection for generator
- Commercial backup power systems
Standby generator installations require electrical permits and often gas or plumbing permits for the fuel line. Some areas also require noise or setback compliance.
Frequently Asked Questions
- How much does generator installation cost in Seattle?
- A whole-home standby generator (14–22 kW) with automatic transfer switch typically costs $5,000–$15,000 installed. The unit itself is roughly half the cost — installation includes the concrete pad, gas line, electrical hookup, and permits.
- How do I find a reliable generator installation contractor in Seattle?
- Choose an installer authorized by the generator manufacturer (Generac, Kohler, Briggs & Stratton). They should perform a load calculation to properly size the unit, not just recommend the biggest one. Ask about warranty terms and annual maintenance plans.
- Do I need a permit for generator installation in Seattle?
- Yes — standby generators require electrical permits and typically gas or plumbing permits for the fuel connection. Your installer should handle all permit applications and coordinate inspections.
About NeedInstall
NeedInstall helps connect customers with local installation professionals across Seattle and surrounding communities. Featured contractors have claimed their profile and verified their business information. Listings marked as "Verified Pro" have been confirmed by the business owner.