Spain Power - Market Share Analysis, Industry Trends & Statistics, Growth Forecasts (2026 - 2031)

According to Mordor Intelligence, the Spain power market size is expected to grow from 150.93 gigawatt in 2025 to 156.9 gigawatt in 2026 and is forecast to reach 190.55 gigawatt by 2031 at 3.96% CAGR over 2026-2031.

This report is Segmented by Power Source (Thermal, Nuclear, and Renewables) and End-User (Utilities, Commercial and Industrial, and Residential). The Market Sizes and Forecasts are Provided in Terms of Installed Capacity (GW).

Spain Power Market Trends and Insights

Accelerating Grid-Connected Solar PV Build-Out

Spain's solar segment set a watershed in 2024 when it overtook gas and wind as the country's top power source. Authorities cleared 26,159.2 MW of renewable construction in 2024, 22,326.1 MW of which is PV, underscoring cost declines, streamlined permitting, and corporate REC demand. Castilla y Leon, Aragon, and Castilla-La Mancha garnered the largest quotas, benefiting from superior irradiation and land availability. Distributed rooftop systems are likewise proliferating across industrial estates, cutting energy bills and Scope-2 emissions. Together, utility-scale and on-site arrays are raising the Spain electricity market's renewable penetration, easing compliance with the 81% green-power target for 2030.

Corporate PPAs Led by Hyperscale Data-Center Entrants

Demand from hyperscale platforms is reshaping revenue models in the Spain electricity market. Google's 35 MW, 10-year wind PPA, Amazon's 469 MW solar commitment, and Apple's 105 MW deal illustrate a shift toward developer-financed build-outs backstopped by tech majors. Data-center capacity could hit 600 MW in 2026 and 3,000 MW by 2030, sustaining multi-gigawatt renewable pipelines. PPAs provide bankable cash flows, lower financing costs, and dovetail with hyperscalers' net-zero strategies, accelerating installations beyond traditional utility procurement volumes.

Escalating Transmission Upgrade CAPEX

Red Electrica budgets EUR 6.5 billion for reinforcements through 2026, yet identifies a EUR 10 billion need by 2030, leaving a EUR 3.5 billion gap. Tariff caps limit annual hikes to 15%, throttling cost recovery. Substation builds face land disputes, with 8 of 15 400-kV facilities delayed two years by legal appeals. Steel and copper inflation pushed line costs from EUR 1.2 million /km in 2020 to EUR 1.8 million /km in 2024. Absent reform, 5 TWh of renewable output could be shed each year by 2028, trimming effective solar utilization to 22%.

Other drivers and restraints analyzed in the detailed report include:

1. Rapid Electrification of Mobility & Heating
2. EU Fit-for-55 & NECP-2030 Decarbonisation Mandates
3. Lengthy Environmental & Municipal Permitting

For complete list of drivers and restraints, kindly check the Table Of Contents.

Segment Analysis

Renewables accounted for 67.10% of installed capacity in 2025, and their 6.95% yearly advance ensures the Spain power market size for clean sources rises from 101.27 GW in 2025 to 150.66 GW in 2031. Solar photovoltaic eclipsed wind at 32.0 GW versus 32.0 GW in January 2025, propelled by low auction tariffs and 24% capacity factors. Repowering lifts onshore wind productivity without new land, while 2 GW of floating offshore leases open an untapped marine resource. Hydropower remains steady at 17 GW but suffers from lower reservoir levels that curb peak-shaving ability. Coal's exit by 2027 and gas's shift to peaking duty-free capacity for renewables will yet tighten reserve margins on low-wind, low-sun days.

Thermal fleets fell to 25.80% of capacity in 2025. Endesa's coal phase-out removed 2 GW, slashing 12 million tpy of CO2. Combined-cycle gas totals 24 GW but runs fewer hours as renewables scale, with hybrid storage enabling four-hour ramps. Nuclear stays flat at 7.1 GW through 2035, after which closures leave a 50 TWh gap to fill with imports or batteries. Biomass grows from 1.2 GW to a projected 1.8 GW by 2030 under circular-economy incentives. Together, this transformation underlines how the Spain power market pivots toward carbon-free technologies even as grid flexibility challenges mount.

Complete Report Scope:

• By Power Source
  • Thermal (Coal, Natural Gas, Oil and Diesel)
  • Nuclear
  • Renewables (Solar, Wind, Hydro, Geothermal, Biomass & Waste, Tidal)
• By End User
  • Utilities
  • Commercial and Industrial
  • Residential
• By T&D Voltage Level (Qualitative Analysis only)
  • High-Voltage Transmission (Above 230 kV)
  • Sub-Transmission (69 to 161 kV)
  • Medium-Voltage Distribution (13.2 to 34.5 kV)
  • Low-Voltage Distribution (Up to 1 kV)

List of Companies Covered in this Report:

1. Endesa S.A.
2. Iberdrola S.A.
3. Naturgy Energy Group S.A.
4. EDP Group (EDP HC Energia)
5. Acciona Energia
6. Repsol Electricidad y Gas
7. Grupo Red Electrica
8. Siemens Gamesa Renewable Energy
9. Nordex SE
10. TotalEnergies SE
11. Enel Green Power Espana
12. Vestas Mediterranean
13. ABO Wind AG
14. Engie Espana
15. Capital Energy
16. Forestalia Renovables
17. Grenergy Renovables
18. Hive Energy Spain
19. Solarpack Corporacion Tecnologica

Additional Benefits:

• The market estimate (ME) sheet in Excel format
• 3 months of analyst support