ENERDEL is a member of India Energy Storage Alliance(IESA)

Lithium-Ion ESS will directly replace NiMH systems in hundreds of hybrid buses

EnerDel, Inc. and King County Metro have finalized a 5-year supply agreement for lithium-ion Energy Storage Systems (ESS). EnerDel is a leading supplier of advanced lithium-ion batteries and ESS for heavy-duty transportation and hybrid power applications. EnerDel will furnish and deliver up to 48 PP320-689-LP Vigor+ ESS per year for installation into the Seattle-based transit authority’s hybrid bus fleet through 2019.

The first order of Vigor+ packs is targeted for delivery to King County Metro in August this year, and will initiate ESS upgrades for its New Flyer Allison Hybrid bus fleet. The transit authority required a complete ESS to fit into the footprint of its current NiMH battery systems.  A retrofitted solution needed to be virtually seamless, and have the ability to maintain established diagnostic reporting. EnerDel’s solution met and improved upon the direct replacement requirements.  Rated at 20 kWh, the EnerDel ESS delivers over three times the rated energy of the existing NiMH system.

An EnerDel demonstration pack has operated failure-free in regular passenger service for over one year in the King County Metro service area.  “We are pleased to see EnerDel’s lithium-ion ESS offering selected as the solution of choice for the aging NiMH hybrid fleet by King County Metro.  Our technology has proven to surpass the incumbent technology, yielding enhancements in performance and warranty, offered as a lower-cost alternative for municipalities,” stated EnerDel CEO Michael Canada.

“Even though the OEM and vendors we currently use provide us with outstanding service, as good stewards of public funds King County Metro is always looking for alternative sources for bus parts. The contract we have established with EnerDel will meet the high standards set by the original vendors while helping to lower costs for the county and provides multiple resources in case one part stream dries up. King County Metro looks forward to working with EnerDel over the term of this contract” said George Stites, King County Metro’s Superintendent of Fleet Engineering.

“King County Metro has set rigorous criteria for competing with the original ESS. We are proud of meeting their expectations and thankful for their instrumental support during this joint development program”, said Tomasz Poznar, EnerDel’s VP of Transportation. “Technology sophistication of the Seattle based team is unique in the transit industry and advanced battery training curriculum was natural choice of both parties. This co-operation would further enhance on-site post sales support of our systems and secure the highest up time of the hybrid fleet”.

About EnerDel, Inc.

EnerDel, Inc. is a privately-held company headquartered in Indianapolis.  It manufactures advanced, lithium-ion batteries and energy storage systems for electric grid, transportation and industrial applications. The company’s prismatic cell design and modular stacking architecture combine to provide customers with production-ready solutions that address their power and energy storage needs.  EnerDel offers its customers the opportunity to receive a guaranteed residual value (GRV) on new energy storage or battery systems of up to 25 percent, which can be used toward the purchase of new or replacement systems.  For additional information, visit

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