DC Fast Charge Coupled with Energy Storage
DC fast chargers located in areas with demand-charge-based rate structures would create significant costs for the site owner of the asset, especially during high demand times like “rush
Battery energy storage systems can enable EV fast charging build-out in areas with limited power grid capacity, reduce charging and utility costs through peak shaving, and boost energy storage capacity to allow for EV charging in the event of a power grid disruption or outage.
This scenario would double the demand charge. Energy Storage Systems can help stations to balance this load and significantly reduce demand charge which helps cut the costs of a charging station by 70% according to studies. This allows stations to break even much faster. Enables Peak Shaving
For EV-Charging Stations, Demand Charge is one of the reasons that makes up significant portion of cost. Demand Charge... Enables Rapid Charging (200 kW) HAKAI's customized battery pack (up to 200 kW continuous discharge rate) can retrofit your current regular charger to enable rapid charging capabilities.
The hosts of the battery-buffered rural EV charging station will never incur a utility bill for more than 100 kW of demand charges. Without battery energy storage, a comparable 600-kW DCFC station could potentially incur 600 kW of demand charges, which would result in higher utility bills.
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