Hmm ? Apart from the fact that few EV have V2G capability yet, and the costs to enable that feature, both onthe vehicle and the property, is not insignificant, that idea will take some time to be realised.
Even then, some of those who have signed up for similar schemes have found themselves being exploited by the power suppliers who use their battery capacity to arbitrage the supply/ demand costing changes , often leaving the batterys near empty when charging costs are high !
Who would rationally buy anything that they do not need themselves, just to enable a power supplier to utilise it at will, with little or no control, for their own profit ?
Those corporations installing unreliable , intermittent, power generators, should be fundung the storage capacity required to ensure continuous supply.