Management of flexible EV load to integrate variable renewable energy

Overview of the status and impact of the innovation

Innovation 2


Decarbonising the transport sector requires transitioning to EVs and charging those EVs with electricity generated from renewable sources. And here lies an important synergy: increasing the use of EVs makes it easier to integrate more renewables into the electricity grid. In the short term, EVs can absorb excess renewable power and avoid curtailment during hours of high generation; later, they can feed back renewable energy into homes or the grid with bidirectional charging. In the long run, increases in EVs will add flexibility, which will make it possible to integrate more renewables into the power system.


Harnessing the synergies between EVs and renewable energy will allow system operators to smoothly integrate both the growing numbers of EVs on the grid and the necessary increases in renewable generation share in the energy mix, significantly reducing the use of fossil fuel–fired peaking power plants and accelerating the energy transition.

BOX 3.21 Nova Scotia Power’s smart charging pilot increases the use of renewable electricity

In 2020, the Canadian utility Nova Scotia Power began a pilot project combining renewable energy generation, EV charging and integrated monitoring. Household customers pay CAD 350 for a ChargePoint Home Flex EV smart charging system and receive a CAD 500 incentive if they allow Nova Power to control when the EVs are charged over a two-year period. The utility then adjusts charging time to manage the EV load and better synchronise it with solar and wind generation profiles, while guaranteeing that the vehicles will always be fully powered each morning (Jarratt, 2020).