The Grid Cloud is a large group of EV's that are parked and connected with a Smart Battery Charger to the grid.
The EV's owners are organized is some way, and by following some rules, they make money with the battery in their EV.
A group of 400.000 EV's can replace a standard 1 GW coal fired power plant. Because the quality of the power from this cloud of EV's can be controlled much better and quicker, the price on the market will be better for electricity from the cloud of EV's than for electricity from the coal fired power plant, or any other power plant that works with heat.

The Grid Cloud is based on the average usage pattern of family cars. They are used for about 1 to 2 hrs per day, and parked the rest of the time.
To be part of a Grid Cloud, the EV should be connected to the grid with a Smart Battery Charger.
This device can also work in reverse and supply electricity from the battery to the grid. Also known as Vehicle to Grid,or V2G.
It does this reverse operation only when instructed by the Grid Cloud coordinator.

The EV owner becomes a member of the Grid Cloud organization and signs in with the capacity of his EV battery. Joining the Grid Cloud means that you promise to have your EV connected to the grid, otherwise you will not get paid. Because charging the battery costs you electricity, but delivering electricity pays more money, because it will be done in on short moments when the price of electricity is high.

The Grid Cloud organization collects all available generation capacity, and sells this on the electricity generation market, on a daily or hourly basis. In the summer, when more then average the members are on vacation, the Grid Cloud organisation collects less capacity and sells less.

A member that does not connect his EV to the grid, does not get paid.

On a normal day you park your car and connect it to the grid. The smart battery charger does the rest.
- signs in your battery to the Grid Cloud
- reports what capacity is available for delivery to the grid.
- and at what time the battery should be charged with what capacity.

How much your battery is depleted or charged is determined by your average usage pattern.
If you have a special situation, you press a few buttons in the car when you park it,  to indicate how much full you want your battery when you return.
Or later, you connect to the internet on your phone and change the settings from there.

You can also see there how much you earned with your battery that day on the electricity market.

See this page for a scenario, how the smart charger for EV's could and probably will be introduced.