King County Metro
|Project name||Interim Base Electrification – Predictive Analysis and Modeling|
|Client name||King County Metro, Seattle, Washington, United States|
|The Client||King County Metro (KCM) is the Puget Sound region’s largest public transportation agency and 8th largest in the United States. Metro provides bus, paratransit, vanpool, and water taxi services, and operates Seattle Streetcar, Sound Transit Link light rail, and Sound Transit Express bus service. KCM is committed to providing safe, equitable, and sustainable mobility, and prioritizing service where needs are greatest. KCM has emerged as an early leader in adopting and piloting Zero Emission Bus technologies|
|Product or services provided||ZET Advisory
|Client industry||Transit Agency|
|The Brief||KCM has retained Evenergi to conduct predictive energy modeling and in-depot simulation for its to be constructed Interim Base, home to 124 pantograph-only battery electric buses (64 artics, 60 forty-foots).
KCM is commencing a detailed depot design phase utilizing pantograph down chargers. The process involves reviewing alternative designs to understand the most efficient approach to charging on the site now and into the future (including a potential autonomous future).
The objective of our work is to provide a framework that establishes the optimal combination of depot layouts, charger speeds and charger types which most benefits KCM. Optimal is defined as the balance between the following factors:
|The Approach||Evenergi is using BetterFleet™ to undertake predictive modeling and analysis.
To complete this work, we are:
|Outcome||An interesting aspect of the study, Evenergi is developing a new module of its BetterFleet software for KCM that will simulate in-depot charging ensuring that BEBs can meet their block assignments with the state of charge achieved by depot charging with a first in, first-out strategy. The project is still ongoing and is due for completion by April 2022.|