Hi Chris,
Comprehensive report – definitely provides a contrast to some of the potential revenue figures touted by V2G proponents. ~£400/annum for cars that are plugged in 75% of the time isn’t huge, given cannibalisation effect on FFR likely to drag that down. Nissan has previously suggested ~€1,300 per annum via V2G, Nuvve ~€1,800, with caveats that amount does not accrue to the end user, is application specific and based on trials in Denmark. Do you think businesses will bother with the additional investment for those kind of returns?

Great article. Are you aware of the Cenex report released last week on this topic? https://www.cenex.co.uk/energy/vehicle-to-grid/
I always thought the main gap around V2G was understanding the realistic revenue streams. This seems to give a comprehensive and realistic view on what that is likely to look like. What is your view on it? How does this align with Energyst’s own views?

Thanks Steven, we’ll be posting more from DNO perspective on this topic.
All the best,
Brendan

V2G can be used nationally, but only via purpose built charging systems which suffer no capacity constraint. But most EVs will charge at home, so are on a constrained LV system. V2G injected here will go to charging the neighbours EV. The controller sees network headroom freed up (=V2G) so sends a “Charge” command to local EVs. The V2G is used, but lost at a national level.

This issue has been known for at least a decade but seems perpetually ignored.

EA Technology was commissioned by ENA to report on this; they found (in 2012) that £62 bn. was needed to reinforce the UK’s LV system so to be fit for EVs and HP. Or, to use ICT Smart systems (as described above). These will though need a way to force EVs to not charge.

This is why a DNO controlled disconnector is mandated in AEVA 2018 to be in each EVSE; an OFF switch to stop overloads. How the DNOs will work this (control chain) is unknown.

As far as I know, there has been no progress on resolving this issue, other than studies like WPD’s Electric Nation and the earlier My Electric Avenue; see the Closedown Report from MEA detailing the problems at LV.

But action there seems little, However NGSO does not see these practical problems, they are not Distributors.

A good pinch of salt is needed.