The remote Isle of Eigg, one of the Scottish Hebridean islands, is now host to a hybrid microgrid which incorporates flywheels and ultracapacitors for high power functions as well as solar, batteries, wind and diesel backup.
The fact that lithium-ion batteries experience degradation over time with use should not necessarily be a limiter for their widespread use in stationary storage systems, but requires long-term strategies for their management.