System and method for managing load on a power grid

A method and system of managing load on a power grid supplying power to a variety of electrical loads, for example to battery charging terminals connected to electric vehicles. The operating state of the loads is monitored in order to obtain usage information, which is then analysed and used to generate predictions for the future about the behaviour of those loads and starting state of those loads in lieu of additional measuring equipment. Thereafter, the system may be requested to alter the total power supplied to all or some of the loads, which is implemented by controlling an operating state of at least one of the loads based on the generated predictions.