Public Charging
EV drivers charge mostly at home or at work. When they don’t, they may use public EV chargers.
EV Charger Speeds
| Level 2 | Level 3 (DC Fast Chargers) |
|
|---|---|---|
| Voltage | 240 V | 400V-1,000 V |
| Charging speed (miles of range added per hour of charging) |
25-80 | 200-1,000+ |
| Typical use | Faster charging at home, work, hotels, or parking garages | High-speed, mid-trip highway charging |
| Amperage / Wattage | 16-80 amps / 4-19 kW |
100-400 amps / 40-400 kW |
| Commercial Cost (per port) |
$10,000 – $20,000 | $40,000 to $250,000 |
Types of Connectors
| Connector | Tesla/NACS | CCS/J1772 | CHAdeMO/J1772 | J1772 |
|---|---|---|---|---|
| Speed | Level 1, Level 2, and DC Fast Chargers | Level 1, Level 2, and DC Fast Chargers | Level 1, Level 2, and DC Fast Chargers | Level 1 and Level 2 |
| Compatibility | All Teslas and nearly all other manufacturers post-2025 | Pre-2025 non-Teslas | Pre-2026 Nissan Leaf and Mitsubishi i-MiEV | Most plug-in hybrids |
Information for Drivers
- EV Charging Locator Apps: View these websites and apps that can help you find chargers.
- Tesla Supercharging Access: Learn how non-Tesla vehicles can access Tesla Superchargers.
Information for Businesses
- Installing Level 2 Electric Vehicle Chargers: Guide to installing Level 2 EV chargers at commercial and public properties from Efficiency Maine.
- Accessible EV Charging Guide and Checklists: Locate and install accessible public Level 2 and DC fast chargers in Maine.
- EPRI’s Vetted Product List: Resource to help organizations find EV charging equipment.
- EV Charger Installer Locator: Select “Electric Vehicle Chargers” on the list of service options.
- Workplace Charging Resources: View the U.S. Department of Energy’s information for charging at work.
- Operation and Maintenance: Review the U.S. Department of Energy’s information about operation and maintenance for public chargers.
Information for Multifamily Buildings
- Multifamily Charging Resources: Review the U.S. Department of Energy’s resources for multifamily building owners and residents.
- Multifamily Housing Guide: View Drive Electric Vermont’s guide for installers and property owners.
Efficiency Maine periodically releases funding opportunities for the installation and operation of public EV chargers at commercial and public properties. Visit our Opportunities page to view current funding opportunities and Maine Public EV Charging Initiatives page to view previous funding opportunities.