HB 3511 proposes amendments to the Texas Utilities Code to encourage greater integration of electric vehicles (EVs) into the ERCOT power market. Specifically, the bill adds new Section 39.9161, which grants EV owners the right to physically connect their vehicles to the electric distribution system (termed "interconnection") and participate in energy markets through aggregation. Owners would be able to sell stored electricity from their vehicles into wholesale energy and ancillary service markets via a registered aggregator or a load-serving entity.
The bill authorizes (but does not mandate) the Public Utility Commission of Texas (PUC) to establish safety, technical, and performance standards for EV interconnection. These standards must align with national standards such as those issued by Underwriters Laboratories, the National Electrical Code, the National Electrical Safety Code, and the Institute of Electrical and Electronics Engineers. Furthermore, the PUC may develop programs facilitating the aggregation of EV energy storage to participate in ERCOT’s market mechanisms, including virtual power plant programs and distributed energy resource aggregations.
The legislation aims to enhance grid resiliency and promote new forms of decentralized energy contributions.
The originally filed version of HB 3511 focused solely on the interconnection of electric vehicles (EVs) to the ERCOT power grid. It authorized the Public Utility Commission (PUC) to establish safety, technical, and performance standards for EVs connecting to the grid, referencing national safety standards. It also allowed the PUC to create a program enabling the sale of electricity stored in EVs back into the transmission and distribution systems. This version specifically mentioned that electric utilities or retail electric providers could contract with EV owners for the sale of stored electricity, and that EVs could be integrated into grid mechanisms such as Virtual Power Plants (VPPs) and Aggregated Distributed Energy Resource (ADER) programs.
In contrast, the Committee Substitute version broadens and refines the bill’s scope. It shifts the focus from direct utility/retail electric provider contracting to market aggregation. Under the substitute, EV owners may sell stored electricity through a registered aggregator or load-serving entity rather than directly with utilities. It further clarifies participation by referencing ERCOT's wholesale energy and ancillary services markets and explicitly supports aggregation into market mechanisms like VPPs and distributed energy resource programs. The substitute also makes a slight but important change by ensuring that the PUC’s adopted rules do not conflict with national standards, whereas the original bill only required the commission to consider them.
Overall, the substitute version modernizes the bill to align more closely with ERCOT’s evolving market structures, shifts focus away from direct utility contracts, and offers stronger protection against regulatory conflicts with established national standards.