by Joey Stoate
02 Dec 2022
Proterra and Transit Agencies Use Swiftly Data to Drive Fleet Electrification
Swiftly and Proterra began collaborating in 2019 with an aligned vision of helping cities move more efficiently – with improved operations and clean-energy vehicles. Proterra has worked with more than 135 agencies to electrify their fleets and has delivered over 1,000 Proterra battery-electric buses throughout North America.
When public transit agencies want to transition bus fleets to electric, understanding the required amount of onboard battery energy needed and the right amount of charging infrastructure has traditionally been a difficult task. With Swiftly’s industry-renowned transit data, Proterra has been able to break down some of the barriers transit agencies can face when looking to make this transition.
The Swiftly GPS Playback API allows Proterra to model the daily block schedules energy needs to help determine the number of chargers needed and optimal times for charging. By leveraging Swiftly data, Proterra can more accurately model electric fleet performance and costs based on real, observed data from the agency’s vehicles, as opposed to relying on static schedule data or generic assumptions. Presenting this simplified breakdown leveraging the Swiftly data engine, Proterra has successfully modeled over 5,000 daily block schedules for over 20 transit agencies.
With the passing of the climate bill, public transit agencies have an increased focus on their environmental footprint. However, the lack of accurate, consistent data has made it difficult for many agencies to understand how much the investment is to electrify their fleets and build schedules that take into account the necessary charging time. Without reliable data, agencies have typically resorted to generic cost estimates, which can use default assumptions that vastly overinflate the upfront project capital costs and ongoing operating costs needed to charge electric buses.
The Swiftly data engine is considered an industry gold-standard for public transit agencies. With its breadth and volume of data, API access points, and a unified data format for all agencies, Swiftly creates a holistic view of transit performance in real-time and through historical reporting.
Proterra utilizes the Swiftly GPS Playback API, which contains a detailed log of every single GPS ping that a vehicle has ever reported to Swiftly. Along with precise location and movement data, Swiftly records the vehicle such as the block and trip IDs, the operator driving the vehicle, speed, schedule adherence, headway adherence, and more.
Santa Clara Valley Transportation Authority (VTA) is a Swiftly customer using Live Operations, GPS Playback, and Real-time Passenger Predictions. Through the partnership, Proterra integrated Swiftly’s GPS Playback API for VTA into their electric bus simulator tool. VTA then worked with Proterra to prepare a successful California Energy Commission grant to help pay for the first phase of a fleet charging solution that utilizes a solar and battery energy storage system (BESS) microgrid to lower energy costs and provide resiliency.
Proterra’s analysis calculated how much energy would be required to meet each daily block schedule and how many electric vehicles would be needed to meet these energy needs. Proterra then modeled the number of chargers required to support the fleet and the optimal charge times when electricity is at its lowest cost – including how the energy generated and stored by the solar and battery storage microgrid could be used to charge the buses.
The dollar-per-mile total energy costs were modeled to determine the break-even cost for electric versus diesel. A presentation given at the 2022 RE+ conference outlined the results of this analysis.
While the transition may be challenging, reliable data is critical to build the case for electrification. With robust, consistent data, Proterra and Swiftly are helping agencies plan for electrification in a way that minimizes costs and provides confidence in making climate-first decisions.
This article was originally published by Swiftly.
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