Electriphi, a provider of charging management and fleet monitoring software for electric vehicles, has joined the scrum of startups looking to provide services to the growing number of electric vehicle fleets in the U.S.

The San Francisco-based company has just raised $3.5 million in seed funding from investors, including Wireframe Ventures, the Urban Innovation Fund and Blackhorn Ventures. Lemnos Labs and Acario Innovation also participated in the round.

Electriphi’s pitch has resonated with school districts. It counts the Twin Rivers Unified School District in Sacramento, Calif. as one of its benchmark customers.

“Twin Rivers Unified School District has the largest fleet of electric school buses in North America, and our ambition is to transition to a fully electric fleet in the coming years,” said Tim Shannon, transportation services director, Twin Rivers Unified School District, in a statement. “This is a significant undertaking, and we needed a trusted partner that could provide us state-of-the-art charging management and help us with data collection and monitoring.”

There are several companies pursuing this market — all with either a bit of a head start, significant corporate backers or more capital. Existing offerings from EVConnect, GreenLots, GreenFlux, AmplyPower all compete with Electriphi.

The company is betting that the experience of co-founder Muffi Ghadiali, a former senior director at ChargePoint who led hardware and software development for fast charging infrastructure, can sway customers. Joining Ghadiali is Sanjay Dayal, who previously worked at Agralogics, Tibco, Xamplify, Versata and Sybase .

There’s also the sheer scale of the opportunity, which is likely to see multiple companies emerge as winners.

“There are millions of public and commercial fleet vehicles in the U.S. alone that we rely on daily for transportation, delivery and services,” said Paul Straub, managing partner, Wireframe Ventures. “Many of these are beginning to consider electrification and the opportunity is tremendous.”