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Electrify America to add Tesla battery storage to more than 100 new charging stations

Electrify America plans to install Tesla Powerpack battery systems at more than 100 of its electric vehicle charging stations nationwide over the course of 2019.

Electrify America & Tesla Graphic

The battery systems will be deployed to mitigate higher power demand charges and manage operating costs by avoiding or reducing demand and energy charges during peak charging periods.

Each site will consist of a 210 kW battery system with roughly 350 kWh of capacity. With a modular design, more capacity can be added over time.

Our stations are offering some of the most technologically advanced charging that is available. With our chargers offering high power levels, it makes sense for us to use batteries at our most high demand stations for peak shaving to operate more efficiently. Tesla’s Powerpack system is a natural fit given their global expertise in both battery storage development and EV charging.

—Giovanni Palazzo, CEO of Electrify America

Electrify America has designed its sites and electrical systems to easily enable future upgrades to meet the demand of the growing market and proactively engage with a changing utility landscape and rate structures.

The Electrify America charging system features the first certified cooled-cable 350 kW chargers in the United States. A 350 kW charger can theoretically charge a vehicle at speeds up to 20 miles per minute—seven times faster than today’s most commonly used 50 kW fast chargers. As Electrify America continues to build out its network with this technology, it will continually work to develop and deploy innovative solutions to bring down the operating cost of fast charging, providing sustainability to the grid and reliability to drivers.

Electrify America’s nationwide DC fast charging stations will be located in 17 metropolitan areas and along high-traffic corridors in 42 states, including two cross-country routes.



350 kWh is sufficient to give a half-charge to all of...

SEVEN Tesla 100 kWh models.

This is obviously not going to mitigate demand charges at high-traffic stations.  It's not unusual to see seven vehicles fueling simultaneously at just one of my local stations.  350 kWh is barely a beginning for the fast-charging needs of a real EV fleet.


Someone said you can not do battery to battery charging.


SJC obviously you can charge a battery to then discharge it to charge another battery. There is all manner or retail gadgetry to boost your phone, jump your car start battery, etc.

The question is whether it makes sense to use batteries on the MWh scale to address the problem of demand surge at refuel/rechage facilities. It's not a case of can/can't, and never really has been. It's a case of should/shouldn't.


Future extended range BEVs (500+ KM) with 100+ KW battery pack may need a boost/help for quick charge from a large fixed battery pack to avoid overcharging (some) local grid?

Charging facilities fed with 25 KV lines and high capacity transformer would not need it unless many charging bays are used at the same time.


Harvey, you can transmit 150 kW at 7600 VAC 20 A 1φ.  20 A is easily handled by a single overhead 12-gauge wire, though you'll use something considerably heavier for the sake of mechanical strength.

Herman, you're addressing yourself to someone who repeats something from the article almost verbatim as if he's making some profound insight.  Expect to see more of that.


Many of the local distribution ccts operate at 25 KV in our (fully electrified) region. Some older sub-regions are still using 12.5 KV distribution. Our building is over equipped (for now) with a 10,000 KVA transformer connected on 25 KV underground cct. However, it may be needed when the current 200+ ICEVs are changed for 200+ BEVs and all parking places are equipped with Level II charging facilities.?

Charging facilities close to/connected to normalized 25 KV lines may/should not need damping batteries.

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