Backup Generator Installation in Longmont, CO
Hazards, utility rules, permits and installers
A standby generator runs as long as it has fuel. See what to check in Longmont, from utility transfer-switch rules to permits and fuel, then get quotes.
Longmont backup generator at a glance
Utility rules and programs for Longmont
Longmont Power & Communications and United Power, serve Boulder County, so which rules apply depends on your address.
| Utility | Type | Generator rules |
|---|---|---|
| City of Longmont | city-owned | A generator transfer switch is electrical work: use a licensed electrician and pull any permit your city or county requires. Mesa County, for example, requires a separate permit for generators, and CORE has a Standby Power Connection Procedure for backup generators and batteries. |
| United Power, Inc | member-owned cooperative | A generator transfer switch is electrical work: use a licensed electrician and pull any permit your city or county requires. Mesa County, for example, requires a separate permit for generators, and CORE has a Standby Power Connection Procedure for backup generators and batteries. |
Program details are from each utility’s own pages (read October 2026). See the Colorado incentives table for statewide credits and a status for every program.
What to plan for in Longmont
- Lightning (very high): Lightning causes short outages and damages electronics. Surge protection and a battery that switches over automatically protect the things you care about.
- Hail (relatively high): Hail is hard on rooftop solar; ask installers about impact-rated panels and your insurer about coverage.
- Wildfires (relatively high): Wildfire risk can mean planned shutoffs and smoke. A battery charged by solar gives quiet backup, and fueled generators need extra care on dry days and clear space around them.
Permits and approvals in Longmont
- City of Longmont Building and Inspection Services: permit information
- Inside city limits, apply for the solar building permit through the city’s online portal and send the interconnection checklist to Building Services. A licensed solar installer is required; outside city limits, Boulder County issues the building permit.
- Check any contractor on the Colorado State Electrical Board (license verification) before you sign.
Fees and steps change; confirm with the office before you start. We have not verified timelines for Longmont.
Costs and savings
We do not have verified installed prices for Longmont alone. The Colorado figures above show what to expect; real quotes depend on your home, equipment and installer. Try the generator sizing calculator, and get at least two written quotes.
Choosing an installer
- License: check the contractor on the Colorado State Electrical Board (license verification) and that the license covers this work.
- Quote: ask for an itemized written quote that names the equipment, warranties and who pulls the permit and handles the utility approval.
- Compare: get two or three quotes and compare them line by line, not only the total.
Get backup generator quotes in Longmont
Tell us about your project in Longmont. We reply ourselves and match you with a licensed installer who serves your area. It is free, with no obligation, and nothing is shared with an installer unless you choose one.
More for Longmont
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Backup Generator Installation in Longmont FAQs
What size generator do I need?
It depends on whether you run central air conditioning or only essentials. Use the generator sizing calculator, then have a licensed electrician confirm.
Natural gas or propane?
Natural gas needs a gas line at the home; propane needs a tank, which may need its own permit. Ask your installer and the permit office.
Do I need a permit for a standby generator in Longmont?
Usually yes, and the utility may need to approve solar and batteries. City of Longmont Building and Inspection Services handles permits in Longmont; see the permit information above.
How do I find a licensed installer in Longmont?
Use the quote button on this page. We reply ourselves and match you with a licensed installer who serves your area; you can check any contractor on the Colorado State Electrical Board (license verification).
Sources: sunshine and climate NASA POWER; hazards FEMA National Risk Index; utility numbers EIA-861 (2024); prices EnergySage (October 2026) and Generac (U.S.); credits IRS and the Colorado Division of Property Taxation; permit information from the city or town’s own page; utility programs from each utility’s own pages (October 2026). General information, not financial, tax, legal or electrical advice. See our editorial policy.