Automobile-to-grid (V2G) expertise is steadily making the transition from pilots to industrial functions.
In the intervening time, a couple of automakers, together with GM, Ford and Nissan, supply bidirectional charging options, however these require proprietary charging {hardware}, and are restricted to functions comparable to backup energy (V2H). True V2G performance requires a utility interconnection, and for this, up-to-date requirements shall be crucial.
In Could, UL Requirements & Engagement launched the UL 1741 Complement SC for AC Bidirectional Electrical Automobile Provide Gear for EVs with SAE J3072 Bidirectional Onboard Inverters.
Zach Woogen, Government Director of the Automobile Grid Integration Council (VGIC), a nationwide sensible EV charging advocacy group, explains in a current weblog publish, “This long-awaited customary, and the ensuing developments now underway, could catalyze a brand new marketplace for low-cost, scalable vehicle-to-grid alternating present (V2G AC) by supporting interoperability.”
V2G methods are available in two flavors: DC (inverter capabilities are offboard the EV); and AC (inverter capabilities are onboard the EV). A number of US utilities have adopted or proposed updates to their guidelines to include each DC and AC V2G functions.
Regulators and utilities in California, Maryland, New York, Massachusetts and Connecticut have clarified the remedy for V2G DC methods underneath present or modified interconnection guidelines.
As for V2G AC methods, utility guidelines in California and Maryland outline a certification pathway underneath the related UL 1741 Certification Requirement Resolution (CRD) for multipiece distributed power useful resource (DER) methods together with UL 9741. This method applies to matched, multipiece DER methods, the place a particular automobile mannequin and charger are licensed for V2G AC operation utilizing present revealed necessities. Utilities in Nevada and Connecticut have pending proposals to ascertain this similar certification pathway.
The Could 2026 publication of UL 1741 SC affords a brand new certification pathway for V2G AC methods. The usual helps the interconnection of a charger as an “oversight supervisor” for a automobile designed and examined to fulfill SAE J3072. As a result of this certification pathway doesn’t depend on certifying a given vehicle-charger pair as a single system, trade stakeholders view it as a key step towards widespread interoperability of AC bidirectional charging.
Supply: VGIC
