Ocean Energy is Making Waves
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The International Energy Agency’s (IEA) Annual Report, “An Overview of Ocean Energy Activities in 2025,” published in March 2026, paints a vibrant picture of a sector experiencing significant growth and innovation. The report highlights a notable expansion in both deployed capacity and investment, signaling a maturing industry poised to contribute substantially to global clean energy targets.
How Ocean Energy Progressed in 2025
Throughout 2025, advancements in wave and tidal energy technologies were particularly pronounced. Several large-scale tidal stream projects moved from pilot phases to full commercial deployment, demonstrating improved efficiency and reliability. These projects, primarily located in Europe and Asia, are beginning to deliver predictable, baseload power, a key advantage for ocean energy integration into national grids. The report notes a decrease in the levelized cost of energy (LCOE) for these mature tidal technologies, making them increasingly competitive with other renewable energy sources.
Wave energy, while still facing greater technological diversity and requiring further optimization, also saw encouraging developments. New device designs exhibited enhanced survivability in harsh marine environments and demonstrated improved energy capture capabilities. Several key markets are actively supporting wave energy through targeted funding and favorable regulatory frameworks, fostering a pipeline of projects expected to come online in the coming years.
Investment in the ocean energy sector saw a marked increase in 2025. The report identifies a growing interest from traditional energy companies seeking to diversify their renewable portfolios and leverage their expertise in offshore operations.
Beyond technological and financial progress, 2025 was also a year of heightened international collaboration. Cross-border initiatives focused on standardizing testing protocols, sharing operational data, and developing robust environmental impact assessments. These efforts are crucial for building investor confidence and accelerating the pace of global deployment.
While challenges such as grid connection infrastructure, permitting processes, and supply chain development remain, the IEA’s 2025 report concludes with a strong sense of optimism. The momentum generated this past year suggests that ocean energy is on a trajectory to become a significant component of the global clean energy mix in the coming decade, offering a vast, untapped renewable resource.
