Iceland’s energy mix is among the most unique in the world, with 85% of its total primary energy sourced from domestic renewables. It is the world’s largest electricity producer per capita, generating nearly 100% of its electricity from renewable sources. Iceland’s electricity is produced almost entirely by two renewable sources: Hydropower (70-75%), and geothermal (25-30%). Geothermal energy covers 95% of the country’s heating needs. It also powers greenhouses for agriculture, fish farming, and snow-melting systems for sidewalks. Iceland aims to become carbon-neutral by 2040 and completely fossil-fuel-free by 2050.

Iceland is leveraging its 100% renewable geothermal and hydropower grid to become a major green hydrogen and e-fuel producer. , aiming for carbon neutrality and fossil fuel independence by 2050. Key projects focus on decarbonizing maritime and heavy transport, including a 300MW plant for Sustainable Aviation Fuel (SAF) at Keflavík Airport.

Hydrogen is produced through electrolysis powered by abundant, low-cost geothermal and hydroelectric energy. The primary goal is creating e-fuels (green ammonia, methanol, methane) to replace imported fossil fuels in hard-to-abate sectors like shipping and aviation.

White hydrogen found in Iceland’s hydrothermal fields.

Hungary is a landlocked country; therefore, it cannot produce green hydrogen by electrolysis of seawater.

Honduras maintains a diversified energy mix, with approximately 60% of its electricity generated from low-carbon renewable sources as of 2023. The country has transitioned significantly from a 70% reliance on fossil fuels in 2012 to becoming a regional leader in solar energy.

When considering total energy supply (including transportation and residential heating & cooking), the mix changes significantly. Oil remains the dominant overall energy source (~55-59%) due to transportation needs. The Honduran government has established ambitious targets for its energy future. The renewable target is to reach 80% renewable electricity generation by 2038, and to achieve universal access to electricity for all Hondurans by 2030.

Honduras is actively exploring green hydrogen to leverage its high renewable energy capacity, with studies finding it a technically and economically viable option for reducing energy shedding.

As of February 2026, no information was found indicating that Honduras is producing green hydrogen by electrolysis of seawater.

Haiti’s energy mix is characterized by a heavy reliance on traditional biomass for total energy consumption, while its electricity generation is dominated by imported fossil fuels. Biofuels and waste are the primary energy sources, mainly in the form of wood and charcoal used for cooking by over 90% of households. Imported oil and petroleum products for transportation and industry. Haiti’s electrical grid is fragile, with less than 50% of the population having access as of 2022.

Haiti is exploring green hydrogen, primarily as a potential long-term solution for energy independence, disaster resilience, and sustainable industrial growth.

As of 2026 there is no information indicating that Haiti is producing green hydrogen by electrolysis of seawater.

Guyana’s energy mix is currently dominated by fossil fuels, with over 90% of electricity generated from heavy fuel oil and diesel. While the country is a rapidly expanding global oil producer, it aims to shift towards renewable energy, targeting close to 100% renewable power by 2040 through projects like the 165-MW Amaila Falls hydropower plant and expanded solar mini-grids.

Guyana is exploring green hydrogen, leveraging its massive offshore oil and gas industry to potentially transition into cleaner energy. Through the Low Carbon Development Strategy (LCDS) 2030, the country aims to use its vast natural resources, including solar and hydropower, to support sustainable development. The country is also exploring the potential of utilizing offshore gas for hydrogen production, which can be coupled with renewable sources for sustainable, long-term energy solutions.

As of 2026, there is no information indicating that Guyana is producing green hydrogen by electrolysis of seawater.

Guinea-Bissau’s energy mix is characterized by an extreme reliance on traditional biomass for total energy consumption and imported fossil fuels for its limited electricity generation.

Oil Products (15%): Entirely imported as refined products (diesel, gasoline, kerosene); the country has no indigenous production or refineries. Electricity (1%): Represents a tiny fraction of the total fuel share in final consumption. The country increasingly relies on the OMVG interconnection to import hydroelectricity from neighboring Guinea and Senegal via the West African Power Pool (WAPP).

Guinea-Bissau is positioning itself for a green hydrogen future by adopting the ECOWAS (Economic Community of West African States) Green Hydrogen Policy and Strategy Framework, which targets significant production capacities by 2030 and 2050. Pilot projects are emerging, such as plans to utilize solar power and electrolysis to serve the Bolama region. The broader ECOWAS strategy aims for 0.5 million tons of green hydrogen production by 2030, with a major scale-up planned by 2050.

As of 2026 there is no information indicating that Guinea-Bissau is producing green hydrogen by electrolysis of seawater.

Guinea’s energy mix is primarily driven by biomass (77%), followed by oil and hydropower. While traditional biomass dominates consumption, the country is rapidly shifting its electricity generation toward massive, untapped hydropower potential, aiming for over 80% renewable capacity by 2025.

Electricity is primarily generated from hydroelectricity. The country aims for over 80% hydropower in the capacity mix by 2025.

Guinea is currently developing its national green hydrogen strategy to assess production capacity, market feasibility, and export potential, aiming to diversify its energy mix and support sustainable economic growth.

As of 2026 there is no information indicating that Guinea is producing green hydrogen by electrolysis of seawater.

Guatemala’s energy mix is characterized by a significant reliance on renewable sources, which accounted for approximately 65.6% to 72% of its electricity generation in 2023–2024. When considering the total energy supply (including fuel for transport and heating), biofuels and waste (primarily firewood and sugar cane bagasse) remain the dominant source at roughly 60%. The Guatemalan government has set a target to reach 80% renewable electricity by 2030.

Guatemala is positioning itself as a key player in the green hydrogen sector, driven by its 100% renewable energy potential (hydro, wind, solar).

As of 2026 there is no information indicating that Guatemala is producing green hydrogen from electrolysis of seawater.

Grenada’s energy mix is heavily reliant on imported fossil fuels, with approximately 98%–100% of electricity generation fueled by diesel, heavy fuel oil, and propane as of 2020–2022. While solar energy makes up a small, growing percentage (around 1.5%–2%) of capacity, the nation faces high electricity prices and seeks to transition toward renewables.

Grenada is actively advancing toward a sustainable, low-carbon future by exploring green hydrogen production, utilizing its significant potential for renewable energy sources like ocean waves, solar, and geothermal. Recent partnerships focus on developing wave-to-grid solutions, which include producing green hydrogen and potable water via desalination.

The development of green hydrogen in the region is linked to alleviating chronic water shortages, as the EU-supported initiatives explore technologies that combine hydrogen production with seawater desalination.

As of 2026, there is no information indicating that Grenada is producing green hydrogen from electrolysis of seawater.

Greece’s energy mix is currently undergoing a rapid transition from a heavy reliance on domestic lignite (brown coal) toward renewable energy and natural gas. In 2024, clean energy (renewables and large hydro) met 50.5% of the country’s electricity demand.

Wind & Solar accounted for approximately 44.4% of demand in 2024. Solar PV capacity specifically reached 9.6 GW by the end of 2024, doubling in just two years. Natural Gas provided 37.5% of demand.

The updated National Energy and Climate Plan aims for renewables to cover 75% of electricity generation by 2030 and 95.6% by 2035.

Greece is rapidly positioning itself as a key European green hydrogen hub, targeting 1.7 GW of electrolysis capacity by 2030 and 30.6 GW by 2050 to decarbonize heavy industry and transport. Backed by significant solar and wind resources, the nation enacted its first dedicated hydrogen law in July 2025 (Law 5251/2025) to regulate production, transport, and storage, including a 25-year Hydrogen Producer Certificate. Hellenic Hydrogen, a joint venture, is developing a 100 MW electrolyzer in Northern Greece, while the H2 CRETE Valley Project focuses on green H2 and ammonia production.