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Avatar for One Stop Electric LLC
One Stop Electric LLC
5.0(
36
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install - For Business

Serving Damascus, OR and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"As we wanted a ev charger installed, they went out of their way to get us the correct one. They were prompt in installation and courteous in all interactions, fair and reasonable pricing. Would use again for electrical needs."
Kitchen Remodel
Response time10 mins
Response rate100%
8 neighbors recently requested a quote
Avatar for John's Waterproofing Co.
John's Waterproofing Co.
4.9(
19
)
Fixed Generator - InstallPortable Generator - Install

Serving Damascus, OR and surrounding areas

Approved

Super Service Award Winner

In business since 1974

Free estimates

Credit card accepted

"Ideal experience with this company! They contacted me and came out to make the bid the same day I contacted them. They were super flexible and worked to accommodate my schedule. I needed to wait until my EV charger arrived from the manufacturer. They came out the day after it arrived, installed the unit in under two hours, and it's been working flawlessly ever since. Don't let their name fool you--John's Waterproofing is expert at electrical work! I will use them again."
Water Puddle
Water Stains on the Walls
Full Perimeter Drainage and wall system
Room for The Home Appliances
Sump Pump and Battery Back up

+36

Response time1 day
Response rate85%
253 neighbors recently requested a quote
Avatar for ATR Electric
ATR Electric
5.0(
6
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Repair

Serving Damascus, OR and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

With over 7 years of experience ATR ELECTRIC LLC is your trusted choice for all of your electric needs. We take pride in our work and can assure your satisfaction with your project. Give us a call today for a free estimate!

1 neighbors recently requested a quote
Avatar for Safety Home Services
Safety Home Services
5.0(
14
)
Fixed Generator - InstallGenerator - Install

Serving Damascus, OR and surrounding areas

Approved

In business since 2009

Warranties offered

Credit card accepted

"did great work, installed all fixtures and fixed my outlets in the house that stop working as well!! very professional, friendly, and 100% would recommend to friends and family. thank you jarrod!!!!!!"
Our great service team at Safety Home Services. Excited to serve you!
We do the most simple to the most complex residential services.  We are excited to serve you!
We are confident that we have what you need to fix your electrical issue!
Look for our trucks out there on their way to serve our customers!
We are excited to serve your electrical needs, whether small or big!

+5

15 neighbors recently requested a quote
Recommended by38%of homeowners
Avatar for Wind River Electric LLC
Wind River Electric LLC
5.0(
10
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Damascus, OR and surrounding areas

Approved

In business since 1996

Free estimates

Credit card accepted

"I am so grateful for this company. Micheal Townley is extremely knowledgeable and professional. He took the time to go through his assessment and upfront pricing. I had an odd electrical problem which lead to a bigger problem that could have been dangerous. After getting an absolutely shocking diagnosis from another company that left me stressed and crying for days, I hesitated to try anyone else but, Micheal put my mind at ease. I sent him pictures ahead of him coming out and he got right to work following further inspection of my electrical panel. I have additional work that will be completed by this company soon. I highly recommend Wind River."
Kitchen upgrades
Kitchen upgrades
Kitchen upgrades
Kitchen upgrades
Kitchen upgrades

+1

2 neighbors recently requested a quote
Avatar for 3 Mountains Plumbing
3 Mountains Plumbing
4.2(
648
)
Fixed Generator - RepairGenerator - Repair - For BusinessPortable Generator - Repair

Serving Damascus, OR and surrounding areas

Approved

In business since 2000

Emergency services offered

Warranties offered

"The whole experience with 3 Mountains Plumbing was outstanding from Nicole at the office to Jon Marc and Peter, the plumbers. They originally scheduled me for an appointment 5 days out, but Nicole watched appointments carefully and moved my appointment to the same day I called. Jon Marc, the plumber, was very knowledgeable and professional. He gave me different options, which allowed me to decide what worked best for me. He even gave me a teacher discount. After installing my water heater at 8:00 p.m. at night, he discovered a manufacturing problem with the water heater. He called another plumber, Peter. Peter was going off shift and was at the office, but got another water heater and brought it to my house so Jon Marc could install it! I think other plumbers would have said that they needed to come back the next day, but Jon Marc stayed until 10:00 p.m. installing the water heater. I will never use another plumbing company because 3 Mountains is the best! Nicole, Peter and Jon Marc... Thank you!"
The 3MP Team (Circa 2017)
Bill Kerrigan
Alex Grabbing a Photo
Rolling Through Lake Oswego
Random Patch Photo

+103

Response time1 day
Recommended by92%of homeowners
Avatar for Paramount Electric Co.
Paramount Electric Co.
5.0(
5
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business

Serving Damascus, OR and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

We are a licensed, bonded, and insured electrical contractor providing residential and commercial electrical services throughout the area. Our team handles everything from troubleshooting and repairs to panel upgrades, lighting, generators, remodels, and new construction wiring. We pride ourselves on clear communication, honest pricing, and high-quality workmanship. Whether it?s a small repair or a larger project, we focus on safe, code-compliant solutions and dependable service our customers can trust.

Exterior Lighting
Stair Lighting
Bathroom Pendants
Stair Lighting
Tesla Charger

+1

12 neighbors recently requested a quote
Showing 1-10 of 31
Generator Install questions, answered by experts

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

The Damascus, OR homeowners’ guide to generator installs

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