PowerFlex explores submetering solutions for EV charging demand management

On April 17, 2025, the California Public Utilities Commission held a workshop focused on submetering and telematics, addressing the growing demand from customers for innovative solutions to manage electricity costs, particularly in the context of electric vehicle (EV) charging. The discussions highlighted the significant interest from various sectors, including multi-unit dwellings and municipal fleets, in implementing submetering as a means to allocate energy costs more effectively.

A key theme of the workshop was the need for customers to mitigate the financial risks associated with demand charges, which can spike dramatically due to increased EV charging loads. Participants expressed concerns that these surges could lead to exorbitant electricity bills, prompting a desire for more manageable solutions. Submetering was presented as a viable option, allowing for better control over energy consumption and cost allocation among tenants or departments within organizations.

The workshop also explored the potential benefits of segregating flexible loads from inflexible loads, enabling customers to participate in programs like hourly flex pricing without risking their essential energy needs. This approach could enhance the efficiency of energy use while providing financial incentives for customers to shift their consumption patterns.

Despite the promising advantages of submetering, challenges remain. The lengthy timelines associated with establishing dedicated services were cited as a significant barrier for customers who prefer to utilize existing infrastructure. The discussion underscored the importance of load management strategies that can deliver quick and cost-effective solutions without the need for extensive upgrades.

Participants noted that while some companies have begun to explore submetering, many are still in the early stages of developing business cases and understanding market demand. The California Energy Commission's recent funding call for proposals related to developing Meter Data Management Applications (MDMA) platforms was highlighted as a potential opportunity for advancing these initiatives.

In conclusion, the workshop emphasized the critical role of submetering in addressing the evolving energy needs of California's diverse customer base. As stakeholders continue to navigate the complexities of implementation, the insights gained from this meeting will be vital in shaping future energy management strategies and ensuring that customers can effectively manage their electricity costs in an increasingly electrified landscape.