While the amount of power available for the drivers for season three will remain at a maximum of 200kW, for season four this will rise to 220kW before being hiked to 250kW in season five.

Although there is scope within the technical regulations for battery power to be raised to 250kW next season, as outlined in the original technical road map, after careful analysis of the performance of the batteries and the cost of developing this technology, the decision was made to phase in the power increase more gradually. 

Two changes that are coming online for season three are raising the permitted amount of regeneration to 150kW from its current level of 100kW, and reducing the weight of the car from the current 888kg to 880kg.