Johnstown’s local pack for generator installation is three businesses, and only one of them is based in town. The rest of the page is directories by state and generic service-area pages, which means nobody is answering the questions that decide the job here: what the Town wants permitted, how the gas gets to the unit, and what a growing house on a new street actually needs. Precision Service Electric installs Generac standby systems in Johnstown. Call 970-593-3190.

Why Johnstown Houses Lose Power
The town sits on the same stretch of the Front Range where wind arrives before it reaches the foothills and stays longer, and the distribution serving it runs overhead along roads lined with mature trees. That is the ordinary cause of the four-to-twelve-hour outage: a limb, a splice, a recloser that trips and takes a few hundred houses with it.
The other cause is growth. Streets that were fields a decade ago now have houses on them, and the load on the circuits serving those streets has changed faster than the infrastructure it runs on. New construction also brings a different failure pattern — a bad connection at a new service, a transformer that is at its limit on a hot day.
Standby or Portable?
A standby generator sits outside on a permanent base, runs from the property’s fuel supply, and starts by itself within seconds of an outage. An automatic transfer switch disconnects the house from the grid, connects the generator, and reverses the process when power returns.
A portable needs a person, a cord and fuel, and it needs somebody to be home. Used properly it is a reasonable tool. Used with a back-feed cord into a dryer outlet it is dangerous and illegal, and no amount of care makes that arrangement safe for the next person who owns the house.
Generac Systems and What We Do
We install Generac standby systems and we are factory-trained and an authorized Generac dealer, which matters for warranty registration, the transfer-switch pairing and access to parts. We also service other brands, including units another company installed — maintenance, repair and load testing are not tied to who put it in.
What we do not do is size a unit from a chart. The generator has to carry what the transfer switch can connect, and that is a calculation about the house rather than about the model.
Natural Gas or Propane
Xcel Energy supplies natural gas in Johnstown, so a gas unit needs no tank and no deliveries — it tees off the existing service, with a line sized for the generator’s demand at full load. That last part is where installations go wrong: the generator’s inlet pressure requirement is specific, and a line that was adequate for a furnace and a range is not automatically adequate for a 22 kW engine.
Propane is the answer where gas service does not reach the property or the existing line cannot be upgraded economically. It needs a tank sized to the runtime you want, a regulator at the unit, and a different rating table — the same model can be rated differently on propane and on natural gas, and the sizing has to use the published rating for the fuel actually being installed.
Essential Circuits or Whole Home
A service-rated transfer switch carries the entire panel, so nothing has to be moved by hand when the power fails — provided the generator can carry that load, or the system includes load management that sheds the largest circuits while the unit runs.
An essential-circuits switch covers a chosen list: furnace, refrigerator, well pump, a few lights, the internet. It costs less, and it is a genuinely different product from whole-home backup with automatic shedding. Under the code the generator and the transfer arrangement are sized to the applicable calculated load, taking permitted load management and simultaneous operation into account.

Permits in Johnstown
The Town of Johnstown Building Department issues the permits, and it publishes a permit-required list that names electrical work explicitly — so the transfer switch, the generator circuit and the grounding are permitted, and the gas connection is inspected as part of the same project. Contractor licence and permit applications run through the Town’s eTRAKiT self-service portal.
Before anything is dug, the law requires a utility locate: call 811 or 800-922-1987 at least three days before digging, and it is free. That applies to the fuel line trench and to the generator base, and it is the step that prevents a very expensive afternoon.
The final inspection looks at clearances from the structure and from windows and vents, labelling, the gas piping, and the transfer operating correctly under test. We schedule it and meet the inspector on site.
What a Standby System Costs
Installed cost is driven by the unit, the transfer switch and the site work, and the spread between a small essential-circuits system and a whole-home unit with load management is wide enough that a single average price is misleading. No Johnstown-specific installed figure is published, and a national average describes the category rather than your house.
The drivers: unit size, transfer-switch type, the gas line run and whether the meter can supply the added demand, distance from the panel, the base and its access, permit and inspection fees, and whether the electrical service has capacity for the added load. A quote that does not name those is a brochure number.
After the Install
A standby generator is an engine that idles for months and then has to carry a house. Most controllers run a weekly exercise cycle; oil and filter service, plugs, battery condition and an annual load test are what keep the unit dependable when it is actually needed.
We service what we install and what we did not, which matters in a town where equipment changes hands with the house.
Related Work in Johnstown
Equipment and service detail is on the Generac page. The same scope nearby is on the Berthoud generator page and the Longmont generator page, and our service area covers the rest of Northern Colorado. The same scope is written up for Fort Collins and Loveland.


“The most professional and responsive Electrical Service company you can find. This was quite a complicated project. Calvin the lead electrician was here to quote the same day we called and the job was completed in 4 hours a week after we accepted the quote.”
Frequently Asked Questions
Do I need a permit for a standby generator in Johnstown?
Yes. Electrical work is on the Town’s permit-required list, and the gas connection is inspected as part of the same project. Applications run through the Town’s eTRAKiT portal.
What does a whole-home generator cost in Johnstown?
Where your house lands depends on unit size, transfer switch, gas line work and site conditions. No local published average exists for Johnstown, so we quote after a site visit rather than from a range.
Can a new-build Johnstown home be pre-wired for a generator?
Yes, and it is cheaper done during construction: a conduit and a transfer-switch location planned before the walls close. On an existing house the same work is possible, just with more access work.
Natural gas or propane — which makes sense here?
Natural gas, where Xcel’s line reaches the property and can carry the added demand. Propane where it does not, with a tank sized for the runtime you want and a unit rated for the fuel.
Do you service generators you did not install, and other brands?
Yes. We install Generac systems and service all brands, including units installed by other companies — maintenance, repair and load testing.
How long does installation take?
The mechanical work is usually a day or two once equipment and permits are in hand. Elapsed time is driven by permit review, equipment lead time and the gas connection, not by the install itself.
Request a Generator Quote in Johnstown
Send a photo of the meter, the panel and the spot where the unit would sit, and the sizing conversation starts with what is on the wall. Precision Service Electric is family owned, in business 30 years, licensed and insured under Colorado license #3918, factory-trained and an authorized Generac dealer, and rated 4.8 stars across 47 Google reviews. Call 970-593-3190 or request a quote.