The Future of Renewable Energy in Spain: 3 Technologies That Will Power 40% of the Energy Mix by 2035

Spain is at a historic turning point in its energy transition. With ambitious goals to decarbonize its economy and position itself as a sustainability leader, the country is betting heavily on renewable energy in Spain. The goal is clear: for more than 40% of its energy mix to come from clean sources by 2035. This commitment not only responds to the climate emergency but also represents an unparalleled opportunity for innovation, job creation, and energy independence.

In this in-depth analysis, we’ll explore the three key technologies shaping up to be the fundamental pillars for achieving this transformative goal: solar photovoltaics, offshore wind, and green hydrogen. Each with its own particularities and challenges, they promise to redefine Spain’s energy landscape over the coming decades. Integrating these sources involves not only a technological shift but also a profound restructuring of the country’s infrastructure, regulations, and mindset about energy.

The road to a 100% renewable energy future is complex, but Spain’s determination is unwavering. Join us as we unpack how these technologies will not only drive renewable energy in Spain but also lay the groundwork for a fairer, more efficient, and more sustainable energy model.

1. Solar Photovoltaics: The Sun as the Main Engine of the Transition

Solar photovoltaic (PV) energy has grown exponentially in Spain over the past decade, establishing itself as one of the most promising technologies for renewable energy in Spain. Its ease of installation, steadily falling costs, and the abundant sunshine the country receives make it an unbeatable option for generating clean electricity.

Expansion and Current Capacity

Spain has some of the highest solar irradiation in Europe, which gives it a natural competitive advantage. In recent years, installed PV capacity has grown at a breakneck pace, driven by supportive policies, renewable energy auctions, and the boom in self-consumption. Large solar farms stretch across the country, and more and more residential, commercial, and industrial rooftops are being covered with solar panels, transforming the energy landscape.

According to the latest data, installed PV capacity already exceeds 20 GW, and forecasts point to even greater growth. By 2035, solar PV is estimated to account for a substantial share of total power generation, bringing the country closer to the goal of making renewable energy in Spain the dominant source.

Technological Innovation and Efficiency

Constant innovation in the PV sector is a key factor in its success. Advances in solar panel efficiency, improved energy storage systems (batteries), and smarter inverters are maximizing the performance and reliability of this technology. New generations of solar cells, such as perovskite cells, promise even higher efficiencies at lower costs, opening up new possibilities.

In addition, integrating artificial intelligence and machine learning into solar plant management makes it possible to optimize output, forecast generation, and manage grid connections more efficiently. This is crucial for keeping the power system stable despite the intermittency of renewable sources.

Challenges and Opportunities

Despite its great potential, solar PV in Spain faces some challenges. Managing intermittency, meaning the variation in output depending on sunlight hours and weather conditions, requires large-scale storage solutions and a more flexible, digitalized power grid. Land use for large solar farms is another issue to consider, although the growing use of agrivoltaics (combining agriculture and solar power) and installations in urban spaces (rooftops and facades) are mitigating this impact.

The opportunities, however, far outweigh the challenges. Solar PV will create thousands of jobs across the entire value chain, from manufacturing and installation to maintenance and research and development. In addition, solar self-consumption empowers citizens and businesses by allowing them to produce their own energy and reduce their dependence on fossil fuels, actively contributing to the vision of renewable energy in Spain that is robust.

2. Offshore Wind: Sea Breezes as an Energy Giant

While onshore wind power is already well established in Spain, offshore wind is emerging as the next frontier for renewable energy in Spain. With miles of coastline and steady winds, the potential of floating offshore wind farms is immense and could radically change the country’s clean generation capacity.

The Potential and Advantages of Floating Offshore Wind

Spain has a narrow continental shelf and considerable sea depths close to shore, which makes it difficult to install wind turbines fixed to the seabed. This is where floating offshore wind becomes strategically important. This technology makes it possible to install turbines in deeper waters, where wind resources are more abundant and consistent and where the visual impact from the coast is smaller.

Wind at sea is generally stronger and steadier than on land, which translates into a higher capacity factor (hours of operation at full power) and therefore more electricity production. Spain’s floating offshore wind potential is estimated at several tens of gigawatts, enough to meet a significant share of the country’s electricity demand by 2035 and beyond.

Current and Future Projects

Although offshore wind is still in its infancy compared with onshore wind, Spain already has floating offshore wind pilot projects and ambitious development plans. The government has set out a roadmap for offshore wind and marine energy, aiming for 1 GW to 3 GW of installed capacity by 2030 and continued growth through 2035. Energy companies and technology consortia are investing in research and development of prototypes and floating platforms to optimize design and reduce costs.

The coasts of Galicia, the Canary Islands, and the Mediterranean are the areas with the greatest potential to host these energy giants. Building specialized ports and adapting the shipbuilding industry to assemble and maintain these structures will be key to the success of offshore wind in Spain.

Economic and Environmental Impact

Offshore wind will not only contribute to decarbonization but also have a major economic impact. It will create thousands of highly skilled jobs in manufacturing, engineering, construction, and maintenance. It will also position Spain as a technology leader in a high-value-added sector worldwide, exporting know-how and technology.

As for the environmental impact, extensive studies are being carried out to minimize any negative effects on marine biodiversity and bird migration routes. Careful planning, appropriate site selection, and the use of advanced monitoring and mitigation technologies are essential to ensuring the sustainable development of renewable energy in Spain at sea.

3. Green Hydrogen: The Energy Carrier of Tomorrow

Green hydrogen, produced by electrolyzing water using electricity from renewable sources, has emerged as one of the most promising solutions for decarbonizing hard-to-electrify sectors such as heavy industry, shipping, and aviation, and as a large-scale energy storage system. With its vast potential for renewable energy in Spain, the country is poised to become a world leader in producing and exporting it.

Strategic Framework and Goals

The Spanish government has launched the Hydrogen Roadmap: A Commitment to Renewable Hydrogen, with ambitious goals for developing this technology. Green hydrogen is expected to play a crucial role in industrial decarbonization, replacing gray hydrogen (produced from natural gas) in processes such as fertilizer manufacturing, refining, and steel production. By 2030, the goal is to reach 4 GW of installed electrolyzer capacity, which represents significant green hydrogen production.

The strategy aims not only to supply domestic consumption but also to position Spain as a key exporter of green hydrogen to Europe, taking advantage of its strategic geographic location and its existing gas pipeline infrastructure, which could be adapted to transport this new energy carrier.

Applications and Uses of Green Hydrogen

Green hydrogen’s applications are diverse and transformative:

• Industry: Replacing fossil fuels in high-temperature processes and serving as a feedstock in the chemical industry.
• Transportation: Powering fuel cell vehicles (cars, buses, trains, ships, and aircraft) and serving as a synthetic fuel.
• Energy Storage: It makes it possible to store large amounts of surplus renewable energy for use when production is low, acting as a “buffer” for the power grid.
• Power Generation: In the future, it could be used in adapted gas turbines or large-scale fuel cells to generate electricity when needed, complementing renewable energy in Spain, which is intermittent.

Challenges and Opportunities

The main challenge for green hydrogen is bringing down its production costs. It is currently more expensive than gray hydrogen, but mass production of electrolyzers, falling renewable electricity prices, and process optimization are driving its cost down quickly. R&D investment is essential to improve electrolyzer efficiency and develop new technologies.

The opportunities are immense. Green hydrogen will not only decarbonize the economy but also create a new industry with high growth potential, generating wealth and jobs. Public-private collaboration, investment in production, storage, and transportation infrastructure, and training specialized professionals will be crucial for Spain to fully capitalize on the potential of this energy carrier and cement its leadership in renewable energy in Spain.

Integrating the Technologies and the Power Grid of the Future

The success of the strategy for renewable energy in Spain will depend not only on the individual development of solar PV, offshore wind, and green hydrogen but on integrating them seamlessly into a smart, flexible energy system. Today’s power grid, designed for centralized fossil fuel generation, needs a profound transformation to adapt to a distributed, renewable model.

Digitalization and Smart Grids

Digitalizing the grid is essential. Smart grids, equipped with sensors, advanced communication systems, and artificial intelligence algorithms, will make it possible to efficiently manage intermittent renewable generation, optimize distribution, and balance supply and demand in real time. This will include the ability to integrate distributed generation (self-consumption), electric vehicles, and energy storage systems.

Large-Scale Energy Storage

Energy storage is the key link for the stability of a system with high renewable penetration. Beyond lithium batteries, which are essential for short-term storage and frequency regulation, large-scale solutions will be needed for seasonal or multiday storage. This is where green hydrogen plays a fundamental role, since it allows surplus renewable electricity to be converted into a fuel that can be stored and transported.

Other storage technologies, such as pumped-storage hydroelectric plants, will also remain crucial for renewable energy in Spain, taking advantage of the country’s geography.

Interconnections and the Electricity Market

Improving power interconnections with neighboring countries, especially France and Portugal, will allow Spain to export its surplus renewable energy in Spain and, in turn, import energy when needed, contributing to the stability of the European power system as a whole. A well-designed electricity market with appropriate price signals will encourage investment in storage and demand management, promoting more efficient energy use.

Policy and Regulatory Framework: Driving Innovation

For renewable energy in Spain to reach its ambitious goals, a stable, predictable regulatory framework that encourages investment is indispensable. The Spanish government has implemented a range of policies and roadmaps aimed at accelerating the energy transition.

National Plans and Strategies

The 2021-2030 Integrated National Energy and Climate Plan (PNIEC) is Spain’s main energy and climate planning instrument, setting targets for 2030 and the lines of action for achieving them. The plan will be reviewed and updated with an eye toward the 2035 and 2040 targets and the ultimate goal of climate neutrality by 2050.

In addition, dedicated roadmaps for offshore wind, renewable hydrogen, and energy storage provide a detailed framework for developing these technologies, including support mechanisms, financing, and administrative streamlining.

Financing and Incentives

Investment in renewable energy in Spain requires major financial backing. European recovery funds (Next Generation EU), along with public and private investment, are channeling resources into renewable, storage, and green hydrogen projects. In addition, tax incentives, competitive auction mechanisms, and R&D grants are being rolled out to drive innovation and the adoption of these technologies.

Public Participation and Social Consensus

The energy transition can’t happen without the support and participation of society. It’s essential to encourage self-consumption, local energy communities, and environmental education so that citizens feel like active participants in this change. Social consensus is key to overcoming potential resistance and ensuring that the benefits of renewable energy in Spain reach every corner of the country and every segment of society.

The Socioeconomic Impact of the Energy Transition

The commitment to renewable energy in Spain is not just an environmental issue but also a socioeconomic development strategy. The energy transition will have a positive impact on many fronts.

Job Creation and Specialization

The expansion of solar PV, offshore wind, and green hydrogen will create tens of thousands of direct and indirect jobs in Spain. These jobs will span not only installation and maintenance but also component manufacturing, engineering, research and development, and related services. Spain has the opportunity to build its own highly specialized renewable energy industry, attracting talent and promoting vocational training in these fields.

Reduced Energy Dependence

By relying less on imported fossil fuels, Spain will improve its trade balance and reduce its vulnerability to swings in international energy prices. Energy self-sufficiency, based on renewable energy in Spain, will strengthen the country’s national security and economic resilience.

Rural Development and Territorial Cohesion

Many renewable energy projects, especially solar farms and onshore wind farms, are built in rural areas, creating economic and social development opportunities in these regions. This contributes to territorial cohesion and helps combat rural depopulation, while promoting innovative business models such as agrivoltaics.

Health and Environmental Benefits

Reducing greenhouse gas emissions and air pollutants will improve air quality and public health. Fighting climate change through renewable energy in Spain is an investment in the future of generations to come and in the preservation of ecosystems.

Conclusion: A Bright Future for Renewable Energy in Spain

The road to 40% (or more) renewable energy in Spain by 2035 is ambitious but entirely achievable. The strategic combination of solar PV, offshore wind, and green hydrogen, backed by a solid regulatory framework and sustained investment, will transform the country’s energy landscape.

Spain has all the ingredients to become a global leader in clean energy: an abundant natural resource, an innovative technology sector, firm political commitment, and an increasingly aware society. The energy transition is not just a necessity but a historic opportunity to build a more prosperous, sustainable, and fair future for everyone.

The success of this transformation will benefit not only Spain but also the global effort to fight climate change and lay the foundations for a truly sustainable energy model worldwide. The vision of renewable energy in Spain as the dominant force is increasingly becoming a tangible reality, and the coming years will be crucial for consolidating this leadership.