Smart Charging: parked EV batteries can save billions in grid balancing. 95% of a car’s time is spent parked. It’s why parked and plugged-in EVs could be the battery banks of the future, stabilising grids powered by wind and solar. More than 1bn EVs could be on the road by 2050, their 14 TWh of EV batteries dwarfing the projected 9 TWh of stationary batteries, according to the IRENA report “Innovation Outlook: smart charging for electric vehicles”. Smart charging could therefore save billions of dollars in grid investments. Distribution system operator Stromnetz Hamburg is testing a smart charging system which, when fully implemented, could reduce grid investments by 90%. But there are specific challenges, including: slow charging (rather than fast) is better suited to grid balancing; “car sharing” reduces an EV’s grid availability; charging infrastructure at home and at the workplace is critical. IRENA’s analysis indicates that if most of the passenger vehicles sold from 2040 onwards were electric, more than 1 billion EVs could be on the road by 2050 — up from around 6 million today —dwarfing stationary battery capacity. Projections suggest that in 2050, around 14 terra-watt hours (TWh) of EV batteries could be available to provide grid services, compared to just 9 TWh of stationary batteries. To learn more about smart charging, read IRENA’s Innovation Outlook: smart charging for electric vehicles. The report explores the degree of complementarity potential between variable renewable energy sources and EVs, and considers how this potential could be tapped through smart charging between now and mid-century, and the possible impact of the expected mobility disruptions in the coming two to three decades.
Energy Post 6th June 2019 read more »