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Friday, 03 December 2021 21:36

Electrify America Installed ESS at 140 Stations: 30 MW Output

Written by Mark Kane, Inside EVs
Electrify America’s 200th charging station in California located at Westfield Valley Fair in Santa Clara. Electrify America’s 200th charging station in California located at Westfield Valley Fair in Santa Clara.

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Electrify America, one of the largest fast-charging networks in the U.S. and part of the Volkswagen Group, announced it installed onsite, behind-the-meter battery energy storage systems (ESS) at more than 140 DC fast charging stations around the country, including more than 90 installations in California.

The total number of stations is 693---with 2,307 individual charging stalls---which means about 20% are equipped with batteries. That's more than we thought.

 

The combined power output of those battery systems is more than 30 MW, which indicates more than 200 kW per station. The company added it's enough to power more than 200 EVs simultaneously at 150 kW.

 

The ESS energy capacity was not disclosed by Electrify America, although the press release multiple times wrongly repeats the 30 MW number as "energy storage capacity," while it is power, not energy.

 

Installations of battery energy storage systems have continued for a few years now. In February 2019, the company announced an order of Tesla Powerpack systems for more than 100 stations. Those were 210 kW/350 kWh units at the time (100 would be 21 MW/35 MWh). As of September 2020, Powerpacks were installed at 60 stations.

 

According to Electrify America, it's the largest rollout of onsite behind-the-meter battery energy storage coupled with ultra-fast DC chargers in North America.

 

According to the press release, new, even more powerful energy storage systems are coming in 2022:

 

"Beyond this installed energy storage portfolio, Electrify America is working on certification and initial roll-out of its next generation of onsite behind-the-meter battery energy storage early next year that will support higher peak power or demand mitigation capability in approximately the same footprint."

 

Benefits of ESS at DC fast charging stations

 

There is a reason behind the installation of...


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