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Top-Rated Generator install pros in Sheridan - Updated Nov 2026

Zero Dark Electric
5.0(
2
)
Fixed Generator - InstallPortable Generator - Repair

Serving Sheridan, MT and surrounding areas

In business since 2021

Free estimates

Emergency services offered

"We are so impressed with the outstanding service we received from Zero Dark Electric! From the almost instantaneous return call to the rewiring we needed done, (completed ASAP), Brandon did it right. We would definitely use Zero Dark again and will recommend them to anyone looking for an electrician."
Response time8 hrs
Recommended by100%of homeowners
GGC. Shane Gray
New to Angi
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Sheridan, MT and surrounding areas

In business since 1992

Free estimates

Emergency services offered

I am a professional person that takes great pride in my work, in a neat and orderly Fashion. That goes above and beyond the call of work to satisfy the customers needs, from the smallest to the largest jobs. \nRanging from residential electrical repair, new and existing to home improvement and remodeling projects.

Generator Install FAQs, answered by experts

Many services include assembling the unit and securing it in the window. Confirm with your provider.

Yes, in most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home models. Because these installations involve significant alterations to your home's electrical system and produce exhaust fumes, local governments often require a permit or inspection for safety purposes. A generator permit typically costs between $50 and $250, depending on your location. Your electrician or certified installer can usually handle the permitting process for you, but you will be responsible for the cost. It's a good practice to confirm with your installer that they will pull all necessary permits before work begins.

While diesel is relatively stable, it won’t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it’s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn’t always ideal for home use.

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

The Sheridan, MT homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.