Before we investigate complex power to grid schemes - though electric cars could have quite an impact there - it would be great if any electric car came with at least one power outlet, so that you could power critical appliances in your house during a power outage at least. Like keeping the fridge running, some lighting and heating food on a small cooker. The same would also be great for any kind of camping.
Beyond that, electric cars could of course have a huge contribution to the grid, especially with high percentages of solar and wind power. The first step would be to charge the cars dependent on the power supply situation. Loading during peak production and not loading in times with low production or pausing it in times of demand peaks.
The final step would be using them to feed power back to the grid, though this needs to be done carefully, as this would increase the wear on the battery.
Beyond that, electric cars could of course have a huge contribution to the grid, especially with high percentages of solar and wind power. The first step would be to charge the cars dependent on the power supply situation. Loading during peak production and not loading in times with low production or pausing it in times of demand peaks.
The final step would be using them to feed power back to the grid, though this needs to be done carefully, as this would increase the wear on the battery.