Spain Rooftop Solar Market Size, Share, Trends and Forecast & Region, Analysis 2026-2034

Market Overview

The Spain rooftop solar market was valued at USD 2.74 Billion in 2025 and is forecasted to grow to USD 13.95 Billion by 2034, exhibiting a compound annual growth rate (CAGR) of 19.82% during the forecast period of 2026 to 2034. The market benefits from Spain's exceptional solar irradiance, government removal of the 'sun tax,' and strong policy support fostering self-consumption capacity. Advanced technologies like smart monitoring and battery storage enhance energy independence, encouraging adoption across residential and commercial sectors.

Study Assumption Years

• Base Year: 2025
• Historical Period: 2020-2025
• Forecast Period: 2026-2034

Spain Rooftop Solar Market Key Takeaways

• The Spain rooftop solar market size was valued at USD 2.74 Billion in 2025.
• The market is projected to grow at a CAGR of 19.82% from 2026 to 2034.
• The forecast period for the market spans from 2026 to 2034.
• On-grid systems dominate with a 92% market share in 2025, due to favorable net metering policies and established grid infrastructure.
• Residential end-users hold 55% market share, driven by government tax incentives and rising consumer awareness.
• The market sees moderate competition among established energy utilities, specialized installers, and subscription-based providers.
• The market benefits from declining panel costs, improved photovoltaic efficiency, and integration with building automation systems.

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Market Growth Factors

Supportive Government Policies and Regulatory Framework: Spain's rooftop solar market growth is significantly driven by government policies and regulatory frameworks. The elimination of the controversial ‘sun tax’ and ambitious targets under the National Energy and Climate Plan create favorable investment conditions. In February 2024, a major incentive program worth USD 1.24 Billion was introduced under the Recovery, Transformation, and Resilience Plan promoting clean energy technology. Regional tax incentive schemes and clear grid connection rules reduce technical complexity and increase investor confidence, encouraging expansion of small-scale solar projects across the country.

Innovations in Technology: Technological advancements are crucial contributors to market expansion. Spain’s Institute for Energy Diversification and Saving allocated nearly 10 gigawatt-hours of energy storage capacity in 2025, distributing over €827 Million to 133 projects integrating battery, pumped hydro, and thermal storage technologies. Improvements in solar panel efficiencies, inverter technologies, and smart monitoring applications allow for optimized energy production and consumption. Lightweight, flexible panels and integration with smart home systems further simplify installation and enhance user experience, driving wider adoption among residential and commercial segments.

Rising Electricity Prices and Consumer Energy Independence: Increasing electricity prices motivate consumers and businesses to adopt rooftop solar systems to stabilize energy costs. Solar energy is seen as a cost-stable and predictable alternative, shortening payback periods as power tariffs rise. The priority on energy independence is growing, with systems protecting users from grid instability and future price fluctuations. Rooftop solar installations also increase property values and improve sustainability branding for businesses, accelerating market adoption and transforming consumer perceptions across Spain.

Market Segmentation

Grid Type:

• On-Grid: Commands a 92% share in 2025, favored due to connection to the main electricity network allowing surplus energy export and less reliance on expensive battery storage. This system supports stable performance, reduces installation complexity, and suits large rooftops and multi-unit buildings.

End User:

• Residential: Leads with a 55% share in 2025, driven by growing adoption to save energy costs, availability of tax incentives, and heightened consumer awareness about energy independence benefits amidst electricity price volatility. Over 483,000 homes and 75,000 businesses used self-consumption systems by 2024.

Regional Insights

Southern Spain emerges as the dominant region in the rooftop solar market, owing to exceptional solar irradiance levels across Andalusia and supportive regional grant programs. Andalusia accounts for a significant portion of cumulative self-consumption capacity nationally. Northern, Eastern, and Central Spain also show growing adoption influenced by industrial installations, streamlined permitting, and urban rooftop availability, respectively.

Recent Developments & News

• In May 2025, TotalEnergies inaugurated Europe’s largest cluster of solar power plants near Sevilla, Spain, comprising five solar initiatives with a total installed capacity of 263 MW. This facility is expected to produce 515 GWh annually, sufficient to power over 150,000 homes and prevent 245,000 tons of CO2 emissions yearly.
• In March 2025, the Vigo plant of the Stellantis Group, in collaboration with Prosolia Energy, unveiled Spain’s largest rooftop solar facility for self-use. Covering 170,000 square meters with 33,000 solar panels, it has an installed capacity of 18.3 MWp producing 22.7 GWh annually, setting a benchmark for the industrial sector.

Key Players

• TotalEnergies
• Stellantis Group
• Prosolia Energy

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