*The Angi rating for Generator Install companies in Marshall, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
*The HomeAdvisor rating for Generator Install companies in Marshall, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
Last update on April 22, 2026
Serving Marshall, WI and surrounding areas
Approved
In business since 1983
Emergency services offered
Warranties offered
"Everything went great. I think they did the best install they could to give me a quality job."
+9
Serving Marshall, WI and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"I cannot say enough great things about Jamie and the team at Wisconsin Generators LLC. From the very first conversation, Jamie was professional, knowledgeable, and incredibly responsive. He took the time to walk me through all my options, answered every question thoroughly, and made sure I felt confident in the decision we were making. The installation process was seamless. The crew showed up on time, worked efficiently, and treated our property with respect. Their attention to detail and commitment to doing the job right was obvious from start to finish. Everything was clean, organized, and completed exactly as promised. What really sets Jamie apart is his integrity and customer-first approach. There was no pressure just honest recommendations and clear communication. If you’re considering a standby generator, I highly recommend Jamie and Wisconsin Generators LLC. Reliable service, expert installation, and true peace of mind. Five stars all The way!!"
+1
Serving Marshall, WI and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1984
Free estimates
Emergency services offered
"My home generator needed servicing"
+55
Serving Marshall, WI and surrounding areas
Approved
In business since 1985
Free estimates
Customers say: Quality work
"Monte's work is great! See above."
+1
Serving Marshall, WI and surrounding areas
Approved
In business since 2010
Emergency services offered
Warranties offered
"Preston and John were both excellent, very professional, and kept us informed at all stages of the work. Joani and I were so pleased with the work they did on running the wiring. installing the 8 recessed lighting fixtures, installing the 3 ceiling fans and installing outdoor electrical outlets that we ran out and got 2 more ceiling fans for them to wire in and install. We would recommend them without reservation!"
+5
Serving Marshall, WI and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"It went really well. Nick was responsive via email, and he was communicative throughout the process. Nick found a creative way of running power out to my garage, installed a sub panel, added five outlets on individual circuits to my garage, and ran power to my new L2 car charger. I couldn't believe how fast they were able to knock out the project. I like the way that he set things up so that we can easily expand in the future. Nick and his assistant were really nice guys with great attitudes. They worked efficiently, cleaned up after themselves, and did a really nice job. I would absolutely hire them again."
+6
Serving Marshall, WI and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
Since 1994, we have given the best quality service for your electrical needs. We go above and beyond for all of our clients. You will never be disappointed when you work with Excel Electric, Inc. Ask us about our daily service. We look forward to working with you.
Serving Marshall, WI and surrounding areas
Approved
In business since 2019
Free estimates
Warranties offered
"Installation was prompt and the solar panels have worked great so far. The phone app to track your solar production is also really good."
+16
Serving Marshall, WI and surrounding areas
Approved
In business since 2019
Free estimates
Credit card accepted
"Shawn was on time, very knowledgeable., and professional. Will call him again when our generator needs servicing."
Serving Marshall, WI and surrounding areas
Approved
Free estimates
Emergency services offered
Small jobs welcome
"Excellent service and quality work! They wired our shed and did an incredible job from start to finish. Professional, reliable, and detail-oriented. Everything works perfectly, and the setup looks super clean. Highly recommend them for any electrical work!"
When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.
Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:
Portable generators with 1kW–7.5kW capacity: $500–$2,000
Partial generators with 9kW–20kW capacity: $2,000–$6,300
Whole-house generators with 22kW–48kW: $5,000–$18,000
When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:
Refrigerator: 600 watts
Large dehumidifier: 700 watts
Large window air conditioner: 1,400 watts
Water heater: 3,000 watts
Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running.
Here’s what you can run with different wattages and types of generators:
Portable generator:
2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers.
4,000 watts will keep two large appliances operating and a few smaller devices.
8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.
Partial to whole-house generator:
20,000 watts and above will make it seem like your home’s power is still on.
The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:
Experience frequent or prolonged power outages
Work from home
Store a lot of cold food
Have a sump pump
Have a pump for well water
Use electronic medical devices
Live in a climate requiring heating or cooling
From average costs to expert advice, get all the answers you need to get your job done.
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
Natural gas generators are whole-home standby generators that are connected to your home’s natural gas line. The average cost for a natural gas generator is $12,000.
Wondering who to hire to install a generator? Consult this guide to learn who to hire to install a generator or a transfer switch.
Whole house generators can power homes when electric problems hit, but they aren’t for everyone. Here’s what you should know when you’re thinking about buying.
Before deciding between a gas generator and a natural gas generator, explore the differences. Compare gas vs. natural gas generator with our informative guide.
