Honda Joins Vehicle-to-Grid Technology Demonstration Project in Partnership with University of Delaware and NRG Energy


2014 Honda Accord PHEV

2014 Honda Accord PHEV

Honda announced that, together with University of Delaware and NRG Energy, it will experimentally verify vehicle-to-grid (V2G) usefulness:

“Honda has joined a demonstration project for experimental vehicle-to-grid (V2G) technology aimed at providing a potentially valuable energy storage resource to the nation’s electrical grid while providing for more cost-effective ownership of plug-in electric vehicles.”

The University of Delaware and NRG Energy recently launched the joint venture eV2g that should spearhead V2G.

What’s interesting is that Honda will not provide Fit EVs to the project, just Accord PHEVs.

Now we can answer Jay’s burning question on low sales of Accord PHEV “Why do they bring them to the US at all?” Because Honda needs a V2G demonstrator.

The V2G Accord PHEV is equipped with a bi-directional on-board charger and it will go to the University’s Science, Technology and Advanced Research (STAR) Campus.

“With an additional communication device, the vehicle receives signals from a grid operator via a charging station, and controls charge and discharge in accordance with the signals.  When electric power is requested by the grid, the vehicle will discharge power from its battery.  When the grid power supply exceeds demand, the vehicle proactively charges its battery.”

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7 Comments on "Honda Joins Vehicle-to-Grid Technology Demonstration Project in Partnership with University of Delaware and NRG Energy"

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I suspect Germany will become the V2G leader. They’ve got their great Energiwende project providing a lot of renewable power. Having a V2G system would allow all that renewable power to better match the current weather conditions and electricity demands.

These accord PHEVs are probably going to be demo’d back to the public. And since the capacity is, what, 7kwhs, how many discharges might Delaware have to shoot for to get a meaningful signal on V2G’s usefulness?

Anyone up for a used low-miles Accord PHEV? Yipes.

Hmm, different approach than Nissan here, doing the “to grid” part through the J1772 connector as well… As it doesn’t provide neutral however, I seriously wonder whether this system could be deployed in the residential US (split single-phase 120/240V) without violating electrical code.

You’d probably need an EVSE that incorporates a balancer (like PV) as well. Pretty tricky stuff to sync phases between two live feeds.

I’d rather have just emergency power (V2H) instead of power grid balancing. But with only 7Kw it wouldn’t last long. (10.6 wouldn’t last long either, but, there is that handy 53Kw generator on board with a Volt!)

This is probably why VIA went with a separate power generator for running site tools etc. The integration is more costly than a separate unit!

Let’s not get too crazy with the Volt fanboism; the PHEV Accord has a generator on board as well, by definition!

The way I understand Honda’s setup, the only EVSE modification needed is the signalling part (making that EVSE not J1772 compliant, but hopefully it remains J1772-compatible).

The charger on board this Accord incorporates what is effectively a grid-tied inverter, just like what’s commonly used for PV (it well may be a solar inverter actually; those handle a large range of DC input voltage).

Anti-islanding provisions typical in grid-tied solar inverters, and likely mandatory in this case too, would prevent this car’s J1772 to directly power loads (ie, without the grid also being present).

U of D has some of the old mini-E which came off lease for earlier stages of this project.