Dominica's volcano powered geothermal plant is the Caribbean's first. Here is what it changes for the region.

Dominica's 10 MW geothermal plant took 15 years, survived a Category 5 hurricane, and leaned on Icelandic drilling crews to reach the grid. It is the first commissioned geothermal plant in CARICOM, and a working answer to a question every volcanic island in the region has been asking.

Steam rises from the volcanic Roseau Valley, where Dominica's geothermal plant taps heat from the earth.

Dominica markets itself as the Nature Island, a place of rainforests, hot springs, and the second-largest boiling lake on the planet. For decades, the same volcanic geology that draws tourists sat beneath an electricity system that burned imported diesel for more than 90% of its power. The island sold visitors a vision of natural abundance while paying some of the highest energy prices in the Caribbean to ship in fuel.

In early 2026, two 5 MW generating units built by Nevada-based ORMAT Technologies began feeding electricity into the national grid from a hillside above the village of Laudat, in the Roseau Valley. The plant draws steam from the volcanic system beneath the island, the same heat that feeds the hot springs, and turns it into baseload power. It is the second geothermal plant in the Eastern Caribbean after Guadeloupe, and the first ever commissioned inside a CARICOM member state.

For an island of 66,000 people, the 10 MW capacity matters less than what it replaces. Diesel generation has driven up costs, deterred manufacturers, and tied household bills to the swings of global oil markets. Prime Minister Dr Roosevelt Skerrit has long argued that the countries doing well in tourism and manufacturing are the ones where energy is priced competitively, and that Dominicans have paid too much for power for too long. The plant in Laudat is the direct answer to that argument, swapping fuel imports for heat the island already owns.

Why volcanic islands are sitting on free electricity

The geology that makes the Lesser Antilles dangerous is the same geology that makes them rich in energy. The islands sit on a volcanic arc where one tectonic plate slides beneath another, heating rock close enough to the surface to boil groundwater. Dominica is one of the most volcanically active islands in the chain, with surface manifestations of geothermal activity visible across the landscape. Studies estimate the island's total geothermal resource at around 1,000 MW, a hundred times the capacity of the plant now running.

Geoscientists have recognised this potential for decades. What changed recently was the economics. A geothermal plant runs day and night regardless of weather, unlike solar or wind, which suits an island grid that needs steady baseload. As oil prices became more volatile and concessional climate finance became available, the case for drilling shifted from theoretical to bankable. Dominica was identified early as the ideal place to start, because its resource was both large and close to the surface.

The principle is straightforward. Three production wells and one injection well reach down to a reservoir where temperatures run between 250 and 270 degrees Celsius. Steam and brine are separated, the steam drives two identical 5 MW turbines, and the spent steam is cooled, condensed, and pumped back underground to be reheated. Nothing is consumed except the heat, which the volcano continuously replaces.

Doron Blachar, chief executive of ORMAT Technologies, has been blunt about why this resource is worth the trouble of reaching it. Speaking to the BBC, he set geothermal apart from the renewables that depend on the sky.

The Iceland connection: exporting volcanic know-how to the tropics

Dominica did not develop this expertise alone. The technical backbone of the project came from Iceland, the country that has done more than any other to turn volcanic geology into national infrastructure. Iceland generates the bulk of its electricity and heating from geothermal and hydro, and over decades has become the world's leading exporter of geothermal knowledge, sending engineers and geologists to projects from East Africa to the Philippines.

Iceland GeoSurvey, known as ÍSOR, has worked in Dominica since 2010, when it first advised the government on the island's potential and oversaw the drilling of three exploratory wells. When the project restarted after Hurricane Maria, ÍSOR returned to design two more wells and support reservoir modelling. For the commissioning phase, the institute shipped specialised well-logging equipment and a portable laboratory to the island, the first time it had sent such a unit abroad. The same firm has advised Guadeloupe and Nevis, making Iceland the common technical thread running through Caribbean geothermal development.

The pairing is logical. Iceland and the Lesser Antilles are both young volcanic landscapes with high-temperature resources near the surface, and the drilling, reservoir science, and environmental monitoring that work in one transfer readily to the other. What Iceland built over fifty years, islands like Dominica are now compressing into a single project cycle, with Icelandic crews on the ground to shorten the learning curve.

Fifteen years, one hurricane, and a financing puzzle

The journey from resource confirmation to commercial power took far longer than anyone expected. Exploratory drilling in 2011 and 2012 confirmed a high-temperature system, results promising enough to justify full development. Then progress stalled. In 2017 Hurricane Maria devastated the island, damaging infrastructure and freezing energy-sector investment. The World Bank stepped in to support grid rehabilitation and fund additional drilling, and ÍSOR returned to site two new wells, completed in 2023.

The financing came together as a multi-institution structure that took years to assemble. The Caribbean Development Bank acted as lead arranger and reached financial close on USD 34.8 million in concessional funding. Of that, USD 25.4 million came from the Green Climate Fund as a concessional loan mobilised through the Inter-American Development Bank, with a further USD 9.4 million from Canada's SuRGE initiative. The CARICOM Development Fund added USD 15 million. CDB financing covered 51% of the roughly USD 62 million total cost, the CARICOM Development Fund 22%, and the balance came as equity from the Geothermal Power Company of Dominica. The CDF agreement was signed in June 2025, financial close followed in September, and construction accelerated toward commissioning.

Rodinald Soomer, chief executive of the CARICOM Development Fund, framed the result as a regional milestone rather than a national one, calling it a flagship project for the entire Caribbean and tying it to energy security, affordability, and climate resilience. Dr Vince Henderson, Dominica's Minister of Foreign Affairs, International Business, Trade and Energy, described the green and resilient infrastructure as a massive step forward for the island and the wider region.

Not everyone welcomes drilling in the Roseau Valley

The plant has its critics, and the most pointed objections come from within Dominica's own environmental movement. The Roseau Valley is one of the most biodiverse corners of the Caribbean, and some residents and conservationists have argued that industrial drilling has no place in it. Dominican environmentalist Atherton Martin has been a consistent voice against the project, warning that the valley is ecologically unique and citing wildlife disruption during the exploration phase.

Other residents have raised the fear common to geothermal projects worldwide, that deep drilling and reinjection could trigger earthquakes. ORMAT, which owns and operates geothermal systems across the Americas and Africa, has stated that its operations have never induced seismic events. The tension is real and unresolved: a project sold as protecting the Nature Island's environment is being built inside one of that island's most sensitive ecosystems, and the trade-off has not satisfied everyone.

The counterweight is the diesel the plant displaces. Replacing fossil generation is forecast to cut island-wide carbon dioxide emissions by around 30% and move Dominica toward a target of near-100% renewable electricity by 2030. DOMLEC has said the plant lets it move away from fuel dependence and the price volatility that comes with it, with the long-term pricing agreement sheltering consumers from oil-market swings.

Grenada, Saint Lucia, and the case for a regional grid

Dominica's commissioning lands as the wider OECS GEOBUILD programme advances geothermal across five Eastern Caribbean states. The significance for the region runs deeper than one plant, because almost every island in the volcanic arc shares the same resource and the same diesel dependence. A working plant turns a long-held theory into a template others can finance against.

Grenada is moving next, planning exploration drilling in 2026 with £10 million in UK grant funding approved. Its Minister of Climate Resilience, Kerryne James, has said a planned 15 MW plant could supply up to 40% of household energy if the resource confirms. Saint Lucia sits at an earlier stage, with the OECS programme providing technical assistance to draft a Geothermal Energy Development Bill to govern exploration and utilisation. Nevis, which has held geothermal ambitions since the early 2000s and may hold a resource as large as 900 MW, remains at the production-drilling contract stage, in negotiations with Iceland Drilling for a campaign that could start in August 2026.

The longer ambition is to connect these plants. Dr Didacus Jules, Director General of the OECS, has described Dominica's move as bold and visionary, and put the regional stakes in stark terms.

Dominica is already planning beyond domestic supply, with proposals to export surplus geothermal power to neighbouring islands through undersea cables. With 1,000 MW of identified potential and a single 10 MW plant now running, the gap between what the island uses and what it could generate is the next thing the region's financiers will be weighing.