The Batiki Project
A study of a low ground-mounted solar array in a palm clearing, with a small power house beside it.
A study of the array and the power house. The first drawing is the layout. The second is the full sheet. The third is the day and the night. An engineer has not sized this yet.

A study

Power on the island

The hotel would make its own electricity, on the resort land. Energy Fiji Limited's grid does not reach Batiki. An engineer still has to size the plant. Nothing on this page is built.

Outer-island resorts in Fiji already run this way. On the Yasawas, Paradise Cove, Blue Lagoon, and Octopus use solar and batteries for the daily work, and keep diesel generators as backup. Across those three resorts the solar is about 760 kilowatts. Batiki would use the same kind of system, sized for this hotel's 80 rooms.

Layout of the power system Solar feeds a power house of batteries and generators. The power house feeds the hotel. In sunny hours the solar also runs the desalination plant. SOLAR POWER HOUSE BATTERIES GENERATORS HOTEL SUNNY HOURS WATER PLANT
The layout. Solar feeds the power house. The power house feeds the hotel. In sunny hours the same solar runs the water plant.
Study sheet of the island power and water layout: solar array, power house, water plant, laundry, tanks, and the hotel.
Diag above is a sample of an 80 guests and 55 working staff power grid.
Day and night By day the solar runs the hotel, charges the batteries, and runs desalination. At night the batteries run the hotel. The generators wait unless the batteries are low. DAY SOLAR HOTEL BATTERIES WATER NIGHT BATTERIES HOTEL GENERATORS WAITING
Day and night. By day the solar runs the hotel, fills the batteries, and runs desalination. At night the batteries run the hotel. The generators wait.
Day
Ground-mounted solar, out of the guest view, tilted low so a cyclone has less to catch. While the sun is strong it runs the hotel, charges the batteries, and runs the desalination pumps. Laundry runs in those same hours.
Night
The batteries run the rooms. The fresh water already in the tanks is the store from the sunny hours, so the desalination pumps can stay off.
Grey days
Two diesel generator sets in the power house. They start when the batteries are low, or when the sky has stayed grey. One can be serviced while the other is ready. Fuel still comes by barge, so the generators are the reserve, and the sun does the ordinary day.
Rooms
Inverter air conditioning. The hotel has one pool. When a room is empty the cooling eases off. If a balcony door stays open, the cooling stops, so the night load stays inside what the batteries can carry.
The house
A solid building, kept cool, with the batteries and the generators inside. Spare parts stay on the island. A barge is not a same-day shop.
The size
An engineer sets the kilowatts after the drawings, for 80 rooms plus the kitchen, the laundry, and the desalination plant. This page does not.
Approval
A plant like this needs Fiji's approval to generate, and a licensed Fiji electrician to install it. The lease and the drawings go with that application.

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