4 Manufacturers. 1 Accountable Partner.
Most EV charging companies sell one brand and make your site fit it. We carry four, because a downtown parking garage, a school bus depot, and a highway corridor site are three different engineering problems with three different right answers.
Where We Work
Winn-Marion has served the Rocky Mountain and Great Plains region since 1972, with branch locations and field technicians from Montana to Texas. No call center or subcontractor list — our own people, with trucks, in your state.
Contract Vehicles and Public-Sector Purchasing
Winn-Marion holds an awarded NASPO ValuePoint contract for EV Charging Station Equipment and Services. This allows participating states, counties, municipalities, school districts, and other public entities to purchase EV charging equipment and services without running a separate competitive solicitation.
If you’re a public agency, this can take months off your procurement timeline.
Public and Commercial EV Charging
AC Level 2
3-19 kW
4-24 hours
Range/mi per hour: 10-25
- ‘Destination charging
- Office, workplace
- Multi-family housing
- Hotel and hospitality
- Overnight fleet
- Supplement at DC charging sites for PHEVs
DC Destination
20-25 kW
1-4 hours
Range/mi per hour: 100
- Office, workplace
- Multi-family housing
- Hotel and hospitality
- Parking structures
- Dealerships
- Urban fleets
- Public or private campus
- Sensitive power supply applications
DC Fast
50 kW
20-90 min
Range/mi per hour: 200
- Retail, grocery, mall, big box, restaurant
- High turnover parking
- Convenience fueling stations
- Highway truck stops and travel plazas
- OEM R&D
DC High Power
150-400 kW+
5-20 min
Range/mi per hour: 500-1500
- Highway corridor travel
- Metro ‘charge and go’
- Large fleet
- Bus and heavy vehicle
- OEM R&D
Power and charge times vary depending on vehicle capabilities (charging protocol, BMS, environment), battery capacity (state of charge, overall kWh capacity) and charging hardware power rating. Level 1 AC charging at 1kW or less is not included in this chart and is limited to most public, fee-based chargers.
Frequently Asked Questions
Construction cost can vary from low to high. When considering cost for construction, the key is how close to power do you want your chargers located and is there enough power available on site.
Each company has a different clientele and different needs. Providing EV charging as an amenity will get more visitors to your location. You may even want to charge customers or employees for the power and create a revenue stream.
Finding out if you qualify for a tax incentive takes work. Our team has you covered. We’re always keeping up with the latest tax incentives and looking out for the best possible investment scenarios for our customers.
There are many considerations that can affect the planning and design of EV charging stations such as available space, charging capabilities, permits and electrical requirements. Since every installation is unique, the first step in determining your needs is for our team to complete an EV audit of your location. We will assess all of these things and make a recommendation for any changes that would be needed. Contact Us
A standard 120V outlet can charge at about 3 miles of range per hour; a Level 2 charger at 220/240V can deliver anywhere from 10 to 25 miles of range per hour depending on the power limitations of the charger, the vehicle, and the power supply at the home or facility. DC fast charging systems can charge an EV in about 20-90 minutes depending on the rated power, and in less than 15 minutes with higher power technology.
Case studies of EV adoption rates show that fast public charging is a key component in the successful roll-out of electric vehicles to reduce or eliminate range anxiety. Drivers are more likely to adopt EV technology when they are assured quick charging availability along their regular commutes and intercity travel routes.
Fast chargers are ideally installed in ‘charge and go’ locations such as near highways and convenience locations, as well as serving fleet charging needs. They’re also often used at commercial sites such as shopping centers, restaurants, campuses and urban parking cases. These charging locations are growing quickly and can be easily found in smart device apps and websites.
It depends on your site, not on our preference. Three factors usually decide it: how much power your service can support, whether you need a public driver network or private fleet access, and what your five-year expansion plan looks like. We’ll walk you through the trade-offs with real numbers for your site rather than a spec sheet.
Not necessarily. Networked chargers carry a recurring software subscription that provides driver authentication, payment processing, usage reporting, and remote diagnostics. Some sites need all of that. A private fleet depot behind a gate often doesn’t. We’ll price both and explain what you give up.
You call us, not a manufacturer 800 number. We hold the warranty relationship, we stock common failure parts, and our technicians are in your region.
Yes. We service and repair existing EV charging equipment regardless of who installed it, including sites where the original installer is no longer in business or no longer supports the product.
