EV4 & ETM™ Charging Station

The Energy Transfer Merchant aka ETM™

EV4 Oregon 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 is capable of AC (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.


The ETM™ Station

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.

On the canopy of the station a LED sign (size 1’x15’) can be installed for display of digital static and moving advertising.

EV4 Oregon ETM™ Charging Station rev.3
EV4 Oregon ETM™ Charging Station rev.3

The standard station is equipped with 15 solar modules (capacity 4 kW), one DC fast charger and one level 2 charger.

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® fast charging utilizes the CHAdeMO and CCS Combo connectors 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 4-6 hours to charge the same vehicle from empty.



The ETM™ addresses some significant infrastructure issues for EV charging with one product. It also solves the issue of storage for intermittent mandated renewables. Distributed deployment of stored renewables maximizes benefits for the grid. The standard ETM™ battery configuration is 50kWh.
Furthermore the ETM™ station can be equipped with a LED Display for advertising. In the absence of sufficient income from charging EV’s in the first years, the advertising income will compensate this shortfall. The LED display (size 1ft.x15ft.) is mounted underneath the canopy for optimal exposure to the public.

As an option EV4 offers the “Color of the Electron™” platform of GridMobility™. This patented software platform enables consumers to quantify, validate, store and use renewable energy to charge their electric vehicle. This technology enables ETM™ owners to account for and generate revenue through participation in the carbon footprint offset (REC) markets.