A massive batter installed at one of the authority's substations will store electricity generated by the braking systems on trains ( as the train slows down the wheels drive generators). The battery will help trains accelerate, cutting power consumption, and will also provide extra power that can be sold back into the regional grid. The pilot project, which involves one of 38 substations in the transit system, is expected to bring in $500,000 a year. This figure would multiply id the batteries are installed at other stations.
The project shows how transit agencies who operate major electric rail systems can find a new source of income by tapping into the smart grid. it also highlights one way the smart grid could save energy, avoid blackouts, and incorporate more renewable power. The project is set to be complete by next summer.