Lessons from the Clean Mobility in Schools Project
The Clean Mobility in Schools project has been a journey of innovation and learning. Our partnership with SDGE and Nuvve has been instrumental, offering invaluable insights into the integration of electric buses into school fleets. Here are key takeaways and lessons learned from our work on this transformative project.
Communication is Key
One major lesson is the critical need for Original Equipment Manufacturers (OEMs) for buses and chargers to ensure their data systems communicate seamlessly. While we've achieved a 98% success rate, the remaining 2% underscores the importance of reliability in our operations. Our experience suggests the need for a dedicated role to orchestrate this communication more effectively.
Adapting to Energy Demand Response Events
The introduction of Electric Rate Limit Program (ERLP) events from 4 pm to 9 pm posed unique challenges. Vehicles returning at 5 pm, for example, had to be managed carefully if their charge was below the threshold needed for event participation. We've learned to adapt, ensuring buses are at an 80% charge to discharge down to 20% as required.
Navigating the Pilot Phase
This pilot phase has been a valuable opportunity for vehicle and charging OEMs to refine their technology. It has also been a complex endeavor, dealing with taxes, with SDGE covering the cost for DC fast and Level 2 chargers while the district covers the taxes, amounting to $98K including taxes. Nuvve, on the other hand, has garnered credits for 10 years and shared the cost of chargers with SDGE.
The Importance of Local Expertise
Collaborating with partners possessing complementary knowledge and well-established connections proves to be indispensable when dealing with complex projects such as fleet electrification. Through our joint efforts with CalStart and SDG&E, we harnessed our combined expertise and networks to adeptly maneuver through the intricate process of grant applications and data collection. This synergy empowered us with unshakable confidence, further strengthening our collective endeavors.
Standardization and Testing
Standardization of data is crucial, as is the realization that a tested charger may not perform identically to the chosen one. This project has highlighted the need for software updates and battery balancing solutions, particularly as we faced challenges with syncing multiple batteries on the chassis and ensuring fail-safes.
The Human Element
Finally, we've observed the human aspect of this transition. Drivers have expressed a preference for electric buses, enjoying the quieter, smoother ride they offer. As we continue to rotate newer drivers into the fleet, the acceptance and enthusiasm for electric buses grow.
As we move forward, we’re focused on refining these processes, aiming for a fleet that's not only environmentally friendly but also reliable and efficient. The road to fully electric fleets is complex, but with each project, we're learning and improving for a sustainable future.