In 2014, Formula 1 will enter a new era, an more fuel efficient and electrified one.

After three years of planning and development, the most significant technical change to hit the sport in more than two decades is introduced.

Engine regulations form the major part of the coming revolution, with the introduction of a new generation of Power Units that combine a 1.6-litre V6 turbocharged engine with energy recovery systems that will dramatically increase efficiency by harvesting energy dissipated as heat in the exhaust or brakes.

Renault, who showcased its new power unit, said the maximum power of the new power unit will exceed the output of current V8 F1 engines, however, fuel efficiency will be radically improved.

Renault_F1_Engine_Car-668With only 100 kilograms (220 pounds) of fuel allowed for the race, the new units will use 35 percent less fuel than their predecessors.

“Starting in 2014 we will bring engines to the fore and redress the balance in F1. An engine is the heart of a car, and starting next year it returns to the heart of our sport,” said Alain Prost, Renault ambassador and four-times Formula 1 World Champion.

For several years, Renault said it has used its racing know-how to develop fuel efficient engines for road cars, notably its Energy range. The objectives are clear: maintain or improve driving pleasure, vitality and acceleration with downsized engines to achieve lower fuel consumption and CO2 emissions.

For 2014, typical V8 F1 engines will be replaced by a directly fuel injected 90 degrees 24 valves V6 of 1.6 liter displacement, and with a single turbocharger, unlimited in terms of boost pressure. This being said, the fuel flow limit of 100 kilogram per hour (220 pounds per hour) means boost pressure will typically be maxed-out at 3.5 bar due to fuel flow limit.

The energy recovery units will be regulated, limited at a maximum of 50,000 rpm and 120 kilowatt. The energy recovered will be limited to 2MJ per lap while the energy released will be limited to 4MJ per lap.