Quick Fact: As of 2026, Diu—a tiny coastal union territory in India—is the first city in the country running entirely on solar power during daylight hours. How? Two solar parks (10.27 MW total) spread across 0.2 sq km, plus rooftop panels on 112 government buildings. Coordinates: 20.7167° N, 70.9833° E.
Where exactly is Diu, and why does that matter?
Diu is a small island territory on India’s southern coast, wedged along the Kathiawar Peninsula in the Arabian Sea.
Tucked between the Gulf of Khambhat and Gujarat’s mainland, this 40 sq km speck has always been a crossroads for trade and culture. Now? It’s also a proving ground for renewable energy. The territory’s modest size and abundant sunshine made it the perfect candidate for India’s first fully solar-powered urban experiment. (Honestly, this is the best-case scenario for small coastal regions staring down climate change.)
What’s the actual solar setup in Diu?
Diu runs on 10.27 MW of solar power from two parks and 112 rooftop installations.
Here’s the breakdown:
| Metric | Data |
|---|---|
| Solar capacity | 10.27 MW |
| Solar park area | 0.2 sq km |
| Rooftop installations | 112 government buildings |
| Daily operational hours | About 12 hours |
| Population (2026 est.) | ~50,000 |
| Union territory status | Since 1961 (part of Dadra and Nagar Haveli and Daman and Diu) |
How did Diu pull off 100% daytime solar power?
Diu’s solar journey started in 2016 as a pilot to ditch Gujarat’s unreliable grid.
By 2020, the territory hit full daytime solar coverage—an achievement lauded by India’s Ministry of New and Renewable Energy. The model’s caught on elsewhere too; Lakshadweep and the Andaman & Nicobar Islands have since borrowed similar ideas. Architecturally, Diu’s keeping its Portuguese colonial charm while rolling out eco-friendly upgrades like rainwater harvesting and energy-efficient public buildings. The solar switch also slashed the island’s carbon output by roughly 12,000 tons a year, per a 2023 Ministry of New and Renewable Energy report.
Can tourists actually visit Diu’s solar projects?
Yes—Diu’s solar parks and government complex are open for educational tours.
The territory’s compact, so most lodgings cluster near Diu Fort and Nagoa Beach. Flights? Diu Airport (DIU) handles regional routes, mainly from Mumbai and Ahmedabad. No direct flights, though. Prefer ground or water travel? Buses and ferries link Diu to Veraval in Gujarat in about two hours. Just remember: Diu’s solar grid hums along year-round, though monsoon season (June–September) can occasionally mess with outdoor plans.
