El Hierro: A Model of Renewable Energy and Biodiversity

A Volcanic Gem in the Atlantic
Nestled in the Atlantic Ocean, El Hierro is the smallest of the major Canary Islands, yet it boasts an impressive geological profile, characterized by more than 500 volcanoes and significant elevation changes exceeding 1,500 meters. This vertiginous outcrop, just 12 miles (20 km) wide, is not only captivating in its scenery but also a beacon for sustainable practices.

Harnessing Nature for Energy
Over the past decade, El Hierro has dedicated itself to harnessing its unique natural features for clean energy generation. With strong Atlantic winds at its back, the island has embarked on an ambitious renewable energy project with the goal of achieving self-sufficiency. Currently, about 50% of its annual energy demand is met through renewable sources, marking El Hierro as one of the few isolated territories globally to accomplish such a feat.

The Gorona del Viento Hydro-Wind Power Plant
Central to this endeavor is the Gorona del Viento hydro-wind power plant. This cutting-edge facility utilizes wind turbines not only to generate electricity for the island’s inhabitants but also powers three desalination plants vital for water supply. The combination of wind and water energy means that El Hierro has, at times, achieved a remarkable milestone—complete electricity self-sufficiency for nearly 25 consecutive days.

Resilience and Recovery
The island’s journey towards this level of self-sufficiency is steeped in history. A devastating drought in 1948 left El Hierro in dire straits, forcing residents to seek aid from the Spanish government for water supplies. This experience ignited a drive towards sustainable practices, culminating in the development of advanced renewable energy systems.

Biodiversity Galore
El Hierro isn’t just an energy success story; it’s also a hotbed of biodiversity. Home to over 2,600 recorded species, with around 100 unique to the island, El Hierro serves as a living laboratory for ecological and environmental studies. Its commitment to sustainability and habitat protection sets a promising precedent for the 730 million people living on islands worldwide.

An Island Without the Crowds
Unlike many tourist destinations in Spain, El Hierro has managed to maintain its tranquil charm. With only one traffic light and the absence of mass tourism, the island remains largely untouched, allowing for a more authentic experience of its rich landscapes and diverse ecosystems.

Innovative Water and Energy Management
The technology employed at Gorona del Viento exemplifies innovation in combining different renewable energy sources. The wind turbines help generate electricity while also pumping water to an upper reservoir. This dual functionality means that when the winds are calm, the stored water can be released to generate power, acting like a natural storage battery.

A Community Committed to Sustainability
The momentum behind El Hierro’s sustainable initiatives is driven by its people. Approximately 58% of the island is a protected natural area, having been designated as a UNESCO World Biosphere Reserve and a global geopark. Community members are actively involved in organic farming and restoring traditional agricultural practices.

Cultural Heritage and Agriculture
El Hierro’s agricultural landscape is also being revitalized, with local farmers like Mariela Pérez and Carmelo Padrón leading the charge. They are committed to cultivating heritage crops, preserving unique grape varieties long lost to diseases that affected vineyards everywhere else in Europe.

The Sea of Calms: A Marine Treasure
Off the southern coast, El Hierro’s waters are renowned for their clarity and biodiversity, making it a top destination for divers and marine biologists. The region is home to species such as beaked whales, which thrive in the tranquil waters, allowing researchers unique opportunities for study.

Scientific Exploration and Marine Protection
The emergence of the Tagoro underwater volcano has provided both challenges and unique research opportunities. Acclaimed scientists are exploring how to harness geothermal energy from the hydrothermal sources close to the volcano, ensuring El Hierro’s sustainability journey continues.

Call to Action for Global Protection
As El Hierro stands at the frontier of renewable energy and biodiversity conservation, advocates like Patricia Arranz urge for further marine protection initiatives. The future of the island hinges on the decisions made today, creating a sustainable legacy for generations to come.

In El Hierro, the harmonious blend of innovation, community spirit, and respect for nature reflects a hopeful vision for sustainable living, one that other islands and communities around the world can aspire to emulate.