The original batteries provided excellent service for 10 years. Then for two years the
system was not operational. In 1992, the system was refitted with new batteries and the
PV array was downsized to 50 kilowatts. By the late 1990s, the original PV modules were
replaced with Block V modules working with a diesel generator to charge a battery bank.
This is the oldest continuously operating renewable energy hybrid system in the world
(since 1980).