No badges, no buzzwords. What we actually do on an island that still makes most of its electricity from diesel, and what we haven't solved yet.
Plenty of villa websites call themselves green. We'd rather show you the working: where Sifnos's power and water really come from, the choices we make inside that reality, and the list we're still working through. If you only read one section, read the last one.
Sifnos still runs on its own small grid, and more than 90% of its electricity comes from the island's diesel generators, topped up by two small wind turbines and a little solar. The mainland connection reached our neighbours in 2026 (the new Cyclades cable now ties Milos, Serifos, Folegandros and Santorini to the national grid), but Sifnos's own link is still ahead of us. Meanwhile a local cooperative has spent a decade pushing for an island-owned wind-and-storage plant. We tell you this because every kilowatt-hour saved here matters more than it would in Athens.
Water is the island's other quiet constraint. Sifnos relies on boreholes, springs, old rainwater cisterns and seawater desalination, and desalination burns electricity on that same diesel grid. In high summer the island's population multiplies and water gets genuinely tight. When you're careful with water here, it isn't a gesture; it has a real local effect.

In summer 2026 we installed our own solar panels. They're not all live yet and there's no battery for now, so they mostly cover what the house uses while the sun is up. We'll publish real numbers after the first full season.
Hot water comes from a solar water heater, with an electric back-up element the new panels feed in the morning.
The garden is watered from the house's old rainwater cistern, and the pool is filled from it too: winter rain, stored the way Sifnos always stored it, instead of summer mains water.
Our electricity supply is matched, kilowatt-hour for kilowatt-hour, with Guarantees of Origin from certified Greek renewable production: a procurement choice, not a claim that the cable into the house carries green electrons (on Sifnos, it mostly doesn't, yet).
The bathrooms use refillable, pump-topped bottles; we got rid of single-use miniatures.
We buy and recommend local: the less something travels to an island, the lighter it sits on it, and Sifnos's producers are half the reason you're coming.
The working list, in the order it bothers us:
Battery storage, so the new solar panels keep working after sunset.
A heat pump, to retire the winter heating oil.
Better insulation: walls, windows, roof.
An electric or plug-in hybrid car for the villa's service runs.
We'll mark each one done here when it's done, not before.
You'll probably fly to Greece. We can't change that, and we won't pretend a tree-planting checkbox does. Until the island's cable arrives, our daytime electricity is mostly diesel-generated no matter what we sign. In winter the house still burns heating oil. And almost everything an island consumes arrives by ship. We'd rather name all of this than decorate it.

Nothing about your week gets harder: the pool is full, the showers are hot, the linen is crisp. We just ask the small things: reuse towels when you can, run the washing machine for full loads rather than little ones (every load is island water), and close the doors when the air-conditioning is on. And if you're curious about any of it, ask Elena; you'll get the unvarnished version, usually with coffee.
Ask Elena. No script, no spin: she'll tell you what's done, what's pending, and what's hard.