Sustainability · September 2026
Sustainable Luxury in the Caribbean, in Numbers
A private villa that draws its power from the sun and its drinking water from the sea.
On many islands, running a Caribbean home means relying on the public grid for power and on the local utility for water. Golden Rock Resort was designed to produce both on site, and the villas of Sea Feather Estate are connected to the same systems.
The result is a home that runs almost fully off the grid, with air conditioning, a private pool, and a hot shower exactly where you expect them. These are the facts behind it.
At a glance
- 2,240solar panels, with battery storage for use after sunset
- 0.9 MWof installed solar capacity on the resort grounds
- 240,000 litersabout 63,000 gallons of drinking water, made from seawater and stored underground
- 140,000+plants, flowers, and trees planted since the resort opened in September 2021
- 20,000 sq ftorganic greenhouse supplying the resort’s two restaurants
- 3 distinctionsGreen Key, Green Globe, and a Michelin Key
Power from the sun
The resort’s solar field of 2,240 panels has a capacity of about 0.9 megawatts. During the day the panels supply the resort and the villas, and surplus energy is stored in batteries for use overnight. This is what allows Golden Rock Resort to run almost fully off the grid.
Each villa at Sea Feather Estate is connected to the solar field and the energy storage system, with its own digital meter. Electricity is billed at the same tariff as the island utility, Stuco, with no markup.
Inside the villa, the same thinking continues. Finished villas have induction cooking, tankless water heating, LED exterior lighting, and air conditioning that is controlled room by room. A conduit is already in place for a future charger for an electric car or golf cart.
Drinking water from the sea
A reverse osmosis system turns seawater into clean drinking water. It is stored in underground concrete reservoirs that hold 240,000 liters, about 63,000 gallons.
Every villa is connected to both drinking water and irrigation water, each with its own meter. Drinking water is billed at the island utility’s tariff. Irrigation water costs half of that, so the garden is watered with the right water at a lower price.
Rainwater is put to use as well. It runs from the roads into a central reservoir and is reused to irrigate the grounds.
Greywater, gardens, and a greenhouse
Greywater from the resort is cleaned in helophyte filters, planted beds that purify water naturally, and reused to irrigate the gardens and lawns.
Since the resort opened in September 2021, more than 140,000 plants, flowers, and trees have been planted, creating a green setting around every villa. Villa gardens are finished with drip irrigation and flow into the landscaping of the resort.
Close to Bobbie’s Beach Club, a 20,000-square-foot organic greenhouse grows herbs and vegetables without pesticides. The harvest goes straight to the kitchens of Breeze and Bobbie’s Beach Club, so less needs to be imported.
Built to last
A sustainable home is also one that lasts. The villas are built in reinforced concrete, with exterior walls of about 200 mm (8 inches) and a cast-in-place concrete roof. In every villa, aluminum frames with triple tempered Low-E glass help keep the heat outside.
The local building code requires construction for Category 5 hurricanes. Sea Feather Estate builds above that standard.
Independently certified and recognized
Golden Rock Resort holds Green Key certification, the international eco-label for sustainable tourism, and Green Globe certification, the worldwide sustainability program for the travel and tourism industry. The resort has also been awarded a Michelin Key, the Michelin Guide’s distinction for exceptional hotels.
Frequently asked questions
Are the villas really off the grid?
Almost. Golden Rock Resort runs almost fully off the grid on its own solar field with battery storage and its own reverse osmosis water system. Every villa at Sea Feather Estate is connected to these systems.
Do I pay more for solar power and water made from seawater?
No. Electricity and drinking water are billed at the same tariffs as the island utility, Stuco. Irrigation water is billed at half the drinking water tariff.
Where does the drinking water come from?
From the sea. A reverse osmosis system on the resort grounds turns seawater into drinking water, which is stored in underground concrete reservoirs holding 240,000 liters, about 63,000 gallons.
What happens to greywater and rainwater?
Greywater is cleaned in helophyte filters and reused to irrigate the gardens. Rainwater runs into a central reservoir and is also used for irrigation.
Can I charge an electric car or golf cart at my villa?
Each villa has a conduit prepared from the meter cupboard to the parking space, so a charger can be added after completion.
Which sustainability certifications does the resort hold?
Golden Rock Resort is Green Key and Green Globe certified. The resort has also been awarded a Michelin Key.
See it for yourself
Martin de Reus, private sales advisor for Sea Feather Estate, can show you the solar field, the water systems, and the greenhouse on a visit to St. Eustatius, or walk you through them in a short call first.
See it for yourself
Martin de Reus, private sales advisor for Sea Feather Estate, can show you the solar field, the water systems, and the greenhouse on a visit to St. Eustatius, or walk you through them in a short call first.