Whole-Home Generator Installation in DC, MD & VA
Standby generators, portable inlet boxes, and automatic transfer switches — installed and inspected.
What's Included
Every job comes scoped, permitted, and inspected — no shortcuts.
- Whole-home standby generator installation (Generac, Kohler, Briggs)
- Automatic transfer switch (ATS) installation
- Portable generator inlet boxes and manual transfer switches
- Pad pouring and equipment placement coordination
- Coordination with gas plumbers for natural gas / propane hookup
- Load calculations and circuit prioritization
- Generator service circuits and battery maintenance
- Permitting and county inspection
Why DMV Homeowners Buy Generators
Pepco, BGE, and Dominion are reliable most of the time — but the storms that knock the DMV out (derechos, ice storms, hurricane remnants) can take days to recover from. If you have a basement sump pump, a home office, medical equipment, or a young family, a standby generator buys you peace of mind.
Standby vs. Portable
Most of the standby generators we install are Generac whole-home units, paired primarily with 200A or 400A residential services. The generator sits permanently outside, runs on natural gas or propane, and starts itself within seconds of an outage via an automatic transfer switch. Higher upfront cost than a portable, but it just works.
A portable generator with an inlet box and manual transfer switch is the budget-friendly path: you store a portable unit, roll it out during outages, plug into the inlet, and flip pre-selected circuits to generator power. Cheaper, but requires you to be home and willing to deal with fuel.
What's in a Full Install
We handle everything electrical for a Generac standby install: ATS install, sub-panel or whole-home transfer setup, generator service circuit on a 200A or 400A service, low-voltage signal wiring, load calc, and permit. Gas line work goes to a licensed gas plumber we coordinate with — we don't pretend to be a one-stop shop on gas.
Sizing the Generator Correctly
Undersized generators short-cycle and shut down under load. Oversized generators waste money. We do a real load calc — A/C compressors, sump pumps, well pumps, electric dryers, EV chargers — before recommending a unit.
From First Call to Final Inspection
- 1
Free On-Site Assessment
A licensed electrician walks the job, scopes the work, and answers your questions.
- 2
Detailed Written Quote
You get a clear scope, timeline, and price — no surprises, no upsells.
- 3
Permitted, Code-Compliant Install
We pull the permit, do the work safely, and protect your property end-to-end.
- 4
Final Inspection & Walkthrough
We test every circuit, schedule the county inspection, and leave the site clean.
23 Years in the DMV
Family-owned since 2003. Licensed electrical contractor in MD, DC & VA, under master electrician of record Foto Martinos.
Licensed, Insured & Bonded
Full liability, automobile, and workers' comp on every job. Bonded in VA. EPA- and OSHA-certified. Pirro pulls every permit.
Trusted by Property Pros
HOA boards, property managers, and homeowners across the region — 5.0 ★ on Google.
What Affects the Price
Every job is unique — we won't quote a price online without seeing the work. But here's what moves the number up or down so you can plan.
Get a Written Quote- Generator size (kW rating)
- Whole-home transfer vs. essentials-only sub-panel
- Distance from generator pad to panel and gas meter
- Concrete pad vs. composite pad
- Permit and inspection fees
- Gas plumber pricing (separate scope)
Generator Installation Across the DMV
Serving Washington, D.C., Montgomery County, Frederick County, and Northern Virginia.
Frequently Asked Questions
Related Services
Often booked together with generator installation.
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Learn moreReady to Get Started?
Free written quotes. Licensed & insured. Same-week scheduling for most projects.