In your design you should assume that the unit will need it’s own power; whether this is drawn from a solar array, a turbine, a diesel gen etc – this is your decision to make, considering whether this is an appropriate solution given the context.
As a power source could be integral to the washdown station, I would consider if adding a solar array to your design could aid the end solution?
Hope this helps,
EWB Australia acknowledges the traditional custodians of country throughout Australia and recognise their continuing connection to land, waters and community. We pay our respects to them, their cultures and their land; to Elders both past and present; and to emerging leaders. We recognise that the Aboriginal & Torres Strait Islander people never ceded sovereignty of what we call Australia.