Creekside Electric
Verified Pro
~7 years online4.9
Generator Installation in Wilmington, DE
Compare 27 generator installation contractors near you in Wilmington and surrounding area with an average rating of 4.7/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 23, 2026
Most pros respond within 2–24 hours
Verified Pro Installers
Other Businesses in This Area
Generators Direct USA
3+ years onlineJoe's Generators
10½+ years onlineAdvanced Power Generation, LLC
5.02 years onlineIndependent Electrical Services LLC
5.021 years onlineK&H Electrical Services LLC
5.0~7 years onlineLIAM Services
5.0~6 years onlineMid-Atlantic Generators, LLC
5.02 years onlineMr. Electric of Newark
5.030+ years onlineAction Rental- Wilmington
4.828½+ years onlineFoulk Lawn & Equipment Inc
4.8~16 years onlineKendall Electric
4.828½+ years onlineLloyd Mills Electric
4.816½+ years onlineJoseph Frederick & Sons
4.725½+ years onlineWysocki Electric
4.720+ years onlineGuerrera & Sons Electric
4.6~23 years onlineDay-Light Electric
4.5Eastern Generator Sales & Service Inc.
4.427+ years onlineAaron and Sons Electric
3.8Generator Installation in Nearby DE Cities
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About Generator Installation in Wilmington
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 Wilmington?
- 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 Wilmington?
- 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 Wilmington?
- 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 Wilmington 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.