Denmark is a global leader in renewable energy, with over 67% of its electricity supply derived from green sources, primarily wind power (nearly 50-58%) and bioenergy. The country aims to reduce greenhouse gas emissions by 70% by 2030 and achieve climate neutrality by 2050, with a strategy that includes expanding solar, geothermal, and offshore wind, while phasing out coal and oil.

Denmark is also aiming to become a European leader in green hydrogen, with plans for 4–6 GW of electrolysis capacity by 2030 to support its 70% CO₂ reduction goal and 2045 carbon neutrality target. Utilizing extensive North Sea wind energy, the country is developing over 30 projects, focusing on Power-to-X (PtX) to produce green fuels for transport and industry.

It has approved a hydrogen pipeline to export hydrogen to Germany, targeting 400 GWh capacity by 2030.

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

Cyprus is advancing green hydrogen as a key, strategic, and complementary solution for energy independence, targeting 2030 for the rollout of hydrogen-powered buses and trucks. Projects like GreenH2CY (targeting 150 tons annually) are driving this transition, utilizing solar energy to produce green hydrogen for transportation and heavy industry.

The government’s National Hydrogen Strategy envisions investments up to EUR 6.75 billion by 2050 to establish a “hydrogen valley.”

Cuba is experiencing a severe, multi-decade energy crisis in 2026. The system relies over 95% on increasingly scarce fossil fuels, with a small but growing shift toward solar and renewable energy. In response to these shortages, the government has embarked on an ambitious plan to transition to renewable energy, including building 1,000 MW of solar capacity with Chinese aid.

Cuba is transitioning towards renewable energy sources, particularly solar and wind, to support green hydrogen production. Germany has provided technologies and services to help position Cuba as a producer of green hydrogen.

Croatia is transforming its energy sector by diversifying away from fossil fuels, leveraging significant renewable potential (hydro, wind, solar), and strengthening energy security through LNG infrastructure. The country targets 42.5% renewable energy in gross final consumption by 2030, supported by new investments in solar, geothermal, and plans for a 30% nuclear share by 2040.

Efforts are focused on modernizing the power grid, enhancing energy efficiency in buildings (40-80% funding rates), and developing hydrogen-ready pipelines to connect with neighbors like Slovenia and Hungary.

Croatia is rapidly advancing a hydrogen economy by 2050. The Hydrogen Strategy of the Republic of Croatia until 2050 outlines a clear path for using renewable and low-carbon hydrogen, aiming for 32+ pilot projects to establish a sustainable, integrated hydrogen ecosystem.

The national oil company, INA, is developing a 10 MW electrolyzer with a 10+ MW solar plant in Rijeka to produce 4,000 kg of green hydrogen daily, supported by a network of 10+ filling stations.

Croatia, along with Slovenia and Italy (Friuli Venezia Giulia), is part of the North Adriatic Hydrogen Valley project, aiming for regional cooperation on hydrogen production and use.

Côte d’Ivoire’s energy mix is dominated by natural gas, which accounts for approximately 69% of electricity generation, with hydropower contributing roughly 23-30% as of 2023. The country has the third-largest electricity system in West Africa, with a total installed capacity heavily reliant on thermal power stations. Key goals include increasing renewable energy to 45% by 2030, with a current, growing focus on solar.

Côte d’Ivoire partners with the EU in a €15 million investment to support the Green Energy Production Support Project (PAPEV), aiming for 45% renewable energy by 2030.

As of 2026 there is no information indicating that Côte d’Ivoire is producing green hydrogen by electrolysis of seawater.

Costa Rica has emerged as a global leader in renewable energy, achieving near-100% renewable electricity generation primarily through a mix of hydroelectric, geothermal, wind, and solar power. Solar energy, though currently contributing less than 1% to the national grid, offers a viable solution due to the country’s tropical location and high solar irradiance levels. Recent initiatives, such as distributed generation programs and solar panel incentives, signal a growing interest in photovoltaic systems. while hydroelectric power is renewable, large-scale projects have faced opposition due to environmental and social impacts, pushing the government to seek alternatives like solar and wind.

Costa Rica is advancing its 2050 carbon-neutrality goal by positioning itself as a leader in green hydrogen, leveraging a >99% renewable electricity grid. With support from Germany, the country focuses on producing hydrogen via electrolysis for heavy-duty transport, industry, and decarbonization.

Ad-Astra Rocket Company has a pioneering, 100% carbon-free hydrogen ecosystem project located in Liberia, Costa Rica. It involves the first small fleet of hydrogen fuel cell vehicles and hydrogen production.

The Republic of the Congo (Congo-Brazzaville) relies on oil and gas for most exports and economic output, with biomass as a primary domestic source. Electrification rates are roughly 48% overall, with a push toward expanding hydroelectric and natural gas capacity. Only about 48.3% of the population has access to electricity, with a large disparity between urban (65.6%) and rural (12.7%) areas. As of 2026 there is no information indicating that the country is producing green hydrogen by electrolysis of seawater.

The Democratic Republic of the Congo (DRC) has immense, largely untapped energy potential—estimated at 100,000 MW of hydroelectric power—but suffers from severe energy poverty, with only 19–21% of its population having access to electricity. The energy mix is dominated by biomass (92%) and hydropower (96% of electricity), with major, often under-maintained infrastructure like Inga I and II, and plans for the massive Grand Inga project. The Congo River provides enormous hydroelectric capacity, particularly at Inga Falls. Currently, hydropower generates 96% of the country’s electricity, mostly from the ageing Inga I and Inga II dams. Despite being energy-rich, the DRC has one of the lowest electricity access rates in the world. Access is highly uneven, with roughly 41% in urban areas and as low as 1% in rural areas having access. Roughly 92% of the country’s total energy consumption is met by biomass (wood/charcoal), leading to significant deforestation, especially around urban areas. The government aims to increase electricity access to 32% by 2030. Projects like the Grand Inga Hydropower project and increased integration of solar and other renewables are seen as key to reducing dependence on biomass and enhancing stability. The DRC is a crude oil producer, but lacks domestic refining capacity, necessitating the import of all refined products.

As of 2026 there is no indication that the country is producing green hydrogen from electrolysis of seawater.

Comoros relies heavily on imported fossil fuels (mostly heavy fuel oil and diesel) for electricity generation, which accounts for over 90% of its power supply.  The nation has limited, growing, but largely untapped renewable energy potential, including solar, hydropower, and ocean thermal energy. Only about 8% of the population has access to electricity, with supply restricted to three main islands: Grande Comore, Moheli, and Anjouan. The country is exploring solar and oceanic energy, but currently, 95% of households still rely on biomass for cooking. As of 2026, nothing in the country’s website indicates that the country produces, or is planning to produce, hydrogen from electrolysis of seawater.