A significant challenge is its remoteness from the electricity grid.  Housing the historic underground tunnels and gun emplacements of Fort Nepean, a diesel generator had previously been used to power the toilet block, lighting and associated theatrical audio system for the tourist attraction.  The problem was that this generator was a somewhat noisy unit that disrupted local fauna, used large volumes of diesel fuel and was constantly breaking down due to the salt air.

Our engineered solution incorporates 12x235W (2.820kWp) solar panels installed on the roof of the existing toilet block and a new diesel generator.  The solar panels charge a local battery bank which in turn powers the toilet block and the tunnels.  The generator will only operate should the batteries fall below a pre-determined charge.  Since the system’s commissioning the generator has not been required to run.  The generator is also suitable for a marine environment and has a low DB rating for quiet running.

The amount of energy produced by the solar installation is measured at the toilet block.  This information is then sent via an RF antenna to Fort Nepean.  The signal is received by another antenna which is powered by another solar installation.  The results are then shown on a visitors display for tour groups to view.

To connect this area of Point Nepean to the main grid Meinhardt estimated that the client contribution costs would be in the order of $2,000,000.  This final solution was delivered at just a fraction of the cost.