v2m.org
V2G, V2X, V2V, V2L. Vehicle-to-something is standard vocabulary in electrification, and a name inside an existing convention gets decoded automatically rather than needing to be taught.
Vehicle to microgrid is the natural reading and it describes live engineering and policy work. Electric fleets are enormous distributed batteries, and how they feed back into local grids is being worked on right now by consortia, standards bodies and research groups, all of which use the .org.
Other readings hold: value to market, voice to machine, volunteer to mission. The last one suits nonprofits directly.
The strength is that the audience reads it correctly with no prompting, which is the shortest path from domain to understood brand.
Three characters, listed for sale. Offers welcome.