Off-Grid Eco Villas

Objective:

Powering multiple buildings, both on and off grid, for Sea Dragon Lodge Luxury Eco Accommodation

2014 Install (Autonomy): While the site had grid power available, it wasn’t adequate for the power needed by the new eco villas. The grid will provide backup power for low battery SOC% or high power demand.

2018 Installs (Autonomy Upgrade, and Complete System): With more villas and a new office built, the original system needed expansion.
A separate off grid system was also needed for the new staff quarters, a cottage, and a 3 bedroom villa.

Site Considerations:

Cable sizes needed to be carefully planned for both the 2014 and 2018 installations as the buildings were, in some cases, quite a distance apart.

Load Analysis:

2014 Install

• Average summer demand: 17.61kWh
• Average winter demand: 12.35kWh
• Demand surge: 8.82kW

2018 Off-Grid Install

• Average summer demand: 30.64kWh
• Average winter demand: 30.64kWh

System Design:

2014 Install

• SMA Sunny Island 5048 Inverter Charger
• SMA SB4000TL Solar Inverter
• Sonnenchsein sealed gel batteries (31kWh)
• Trina Solar panels (4kW)
• Tilted solar framing

2018 Off Grid Install

• Selectronic SP Pro SPMC482 Inverter Charger
• 2 x BYD BBox LV PRO battery units (27.6kWh)
• REC 295W Twin Peak Solar Panels (5.9kW)
• Fronius Primo 6kW Solar Inverter
• Select.Live system monitoring
• Tilted solar framing

Project Outcome:

“The boys did a nice job on the installs”
-Steve

To check out the systems for yourself, book a few nights in their stunning oceanview villas at https://seadragonlodge.com.au/