EV4 Oregon LLC, a company related to EV2Charge LLC, has developed the innovative, solar powered EV charging stations, trademarked as ETM™ (Energy Transfer Merchant) – a play on ATM. The ETM™ station is equipped with a battery storage system and capable of AC (Level 1 & Level 2) and DC (Level 3) charging of vehicles with renewable energy, optionally accounting for the sources of clean energy used. The ETM™ battery system is grid-tied with a 3-wire single phase 120/240 VAC connection, not requiring the mostly used 3-phase 208/277/480 VAC connection, therefore no demand charges. Its battery storage system can provide power system back up, grid support, and load balancing services. Like an ATM storing and dispensing money the ETM™ captures, stores and dispenses energy.
Solar ETM™ Station installed at 3620 NE MLK Blvd in Portland, Oregon
The station consists of 4, 6” steel pipes of ½” wall thickness. It is a completely bolted system that covers two parking spaces, 17’ x 17‘at 11.5’ in height. Its foundation is a concrete slab or an underground vault, depending upon the site.
It will be delivered to the jobsite as a kit and can be assembled in a few days after the foundation is ready. The system is a cantilever with the short side (4’) forming an ogive arch when mirrored (placed back to back like parking spaces), making the structure stronger as it is replicated.
The full scale standard station is equipped with 15 solar modules (capacity 4 kW), one DC fast charger and two level 1 and two Level 2 (J1772) chargers. The ETM™ provides a visual iconic structure and protects the chargers from collisions with EV’s. It shelters the EV drivers from the elements when “plugging-in” and provides security with lighting and surveillance. It collects the rain water from the solar roof and filters it before delivery to landscaping. The structure can receive new technology should there be a breakthrough in the future.
The system involves three components; renewable energy, energy storage and dispensing energy, DC2DC™ (patent pending) fast charging of electric vehicles.
1. Renewable energy stored in the battery system lessens the impact on the grid of 50 kW DC fast charging (no need to upgrade micro-grid). Thanks to the ETM™ battery system the hook-up to the grid does not require a costly 3-phase 208/277/480 VAC but the commonly available single-phase 120/240 VAC connection.
2. Stored energy is available to host as an uninterruptable power supply (UPS), the grid for (load balancing and frequency modulation) and EV charging.
3. DC2DC™ is a commercial DC fast charging that utilizes the CHAdeMO protocol and can be modified to handle other protocols including Tesla and future SAE standards. DC Fast charging requires approximately 25 minutes of charge time for a 24 kWh Battery Electric Vehicle (BEV) to charge to 80% capacity from empty. The installed level 2 (J1772) chargers generally take 6-7 hours to charge the same vehicle from empty.
Solar ETM™ Station installed at SE 6th & Lander in Seattle, Washington
