Market Insights on Spain Solar Thermal Collectors Market• According to the research report, "Spain Solar Thermal Collectors Market Overview, 2031," published by Bonafide Research, the Spain Solar Thermal Collectors market is expected to reach a market size of USD 1.30 Billion by 2031. • Spain maintains its position as a global reference in solar thermal technology, with more than 5.2 million square metres of collectors in operation by the close of 2024, equivalent to 3,670 MWth of installed thermal capacity. The Asociación Solar de la Industria Térmica documented a severe 38% contraction in new installations during 2024, with only 85,000 square metres added, marking the weakest year in two decades for the sector. The downturn persisted into 2025, with ASIT recording 57,500 square metres of new collector area, a further 32% decline that brought cumulative installed capacity to slightly above 3.7 GWth.• The Código Técnico de la Edificación, established through Royal Decree 314/2006, mandates that all new and renovated buildings cover between 30% and 70% of domestic hot water demand through solar thermal energy, making Spain the first European nation to make solar thermal implementation obligatory in new construction. The Instituto para la Diversificación y Ahorro de la Energía has allocated 355 million euros in aid for strengthening the industrial value chain linked to the energy transition, with solar thermal explicitly listed among eligible technologies. Domestic manufacturing capacity stands at approximately one million square metres annually, yet Spanish factories operated at only 8% of their potential in 2024, producing 85,000 square metres of which 50,000 were exported to 51 countries.• The industrial process heat segment has emerged as the most dynamic growth frontier, with flagship projects demonstrating the commercial viability of solar thermal at unprecedented scale. The Heineken brewery in Seville hosts Europe's largest solar process heat plant, a 30 MW parabolic trough installation developed by ENGIE España under a 20-year heat supply agreement.

The facility delivers an annual usable solar yield of 28.5 GWh, covering approximately 50% of the factory's total heat demand of 56 GWh per year, with parabolic troughs identical in size and structure to those of large concentrating solar power plants for electricity production. • Kyotherm, in partnership with CSIN, inaugurated a concentrating solar thermal project at Heineken's Valencia brewery that delivers at least 3,500 MWh of solar steam annually, covering 10% of the site's steam consumption through a heat purchase agreement. The SunDial collector, an innovative medium-temperature industrial process solution based on three Spanish patents, consists of two parallel rows of linear Fresnel collectors mounted on a rotating platform that tracks the sun, developed through the H2020 ASTEP project with experimentation at Universidad Politécnica de Madrid premises.Competitive Landscape of Spain Solar Thermal Collectors Market• Termicol, headquartered in Dos Hermanas, Seville, operated as a major domestic manufacturer with a production capacity exceeding 200,000 square metres of flat plate solar collectors annually. The company manufactured thermal solar collectors designed for low-temperature applications below 100°C, with all collectors tested at CENER de AENOR, and expanded into aerothermal heat pumps through its Termicol Heat Pump Plus product line. The company faced financial difficulties and entered voluntary insolvency proceedings in 2025, reflecting the broader market contraction that has strained domestic manufacturers. • Fabrisolia SLU, based in Barcelona, operates in the solar thermal energy solutions sector, manufacturing solar panels and developing climate control technologies including aerothermal heat pumps and hydrogen-ready boilers. Cidersol Solar Technology specialises in solar thermal energy manufacturing, offering high-quality products adapted to specific client needs, while Saclima provides engineering, installation, and maintenance services for solar thermal and photovoltaic systems. Solatom CSP, a Valencia-based startup founded in 2016, manufactures solar boilers to generate high-temperature heat for industrial applications, positioning itself in the concentrating solar thermal segment.• The competitive landscape has been significantly reshaped by the market contraction, with the 38% decline in 2024 installations and further 32% drop in 2025 forcing consolidation among domestic manufacturers.

Spanish factories supplied only 40% of the collectors installed in Spain during 2024, with imports filling the remaining demand. The export segment has provided a critical lifeline, with 50,000 square metres shipped to 51 countries including Germany, Austria, France, Italy, Portugal, and the United Kingdom. • The entry barriers for new manufacturers have risen considerably, with the CTE building code requiring Solar Keymark certification and rigorous performance standards for collectors installed in new construction. The industrial solar thermal sector presents a significant opportunity, with Spain having approximately one million square metres of production capacity but utilising only 8% of its potential, indicating substantial underutilised manufacturing infrastructure that could be activated as the market recovers.Market DynamicsDriver: Industrial Process Heat and the CTE Building Mandate Spain's industrial sector requires substantial thermal energy for processes between 30°C and 400°C, with ASIT President Oleguer Fuentes confirming that food, beverage, chemical, and textile sectors are incorporating solar solutions at scale, with plant capacities expanding from two MWth to over 30 MWth and heat costs in the range of 20 to 30 euros per megawatt hour. The Código Técnico de la Edificación mandate requiring 30% to 70% solar thermal coverage of domestic hot water demand in all new and renovated buildings provides a regulatory floor for residential and commercial demand, with approximately 127,000 housing starts recorded in 2024 representing a 16.7% increase over the prior year. The IDAE's 355 million euro aid programme for industrial value chain strengthening includes solar thermal among eligible technologies, creating a financing channel for manufacturing capacity expansion.Challenge: Market Contraction and Policy Uncertainty The Spanish solar thermal market has contracted for two consecutive years, declining 38% in 2024 and a further 32% in 2025, with 2024 recording the worst performance in twenty years for new collector installations. ASIT has attributed the downturn to economic uncertainty and the absence of dedicated residential incentive programmes comparable to those that drove the 2022 and 2023 peaks.

The collapse in residential demand has strained domestic manufacturers, with Termicol entering insolvency proceedings in 2025 and factory utilisation at just 8% of installed capacity. The sector has called for strengthened policy support, including the extension of energy saving certificate incentives and dedicated financing mechanisms for industrial and commercial installations.Trend: Hybrid Solar Systems and District Heating Integration The Ólvega district heating network in Soria has become the first in Spain to integrate a hybrid solar field with a high-temperature heat pump, combining 543 latest-generation hybrid panels capable of capturing 89% of solar radiation and producing 800 kW thermal and 200 kW electrical output. The installation generates 1.3 GWh of thermal energy annually, equivalent to 28% of the total produced by the network's biomass boilers, reducing fuel consumption and emissions while supplying heating and domestic hot water to 162 homes and ten public and private buildings. Rebi, the project developer, has already replicated the system at its Cuenca heat network, incorporating a flue gas recuperator to further improve circuit efficiency. The hybrid PVT segment is also gaining traction, with Barcelona's swimming club installing 1,041 PVT panels across 5,500 square metres of rooftop surface, demonstrating the integration of electricity and heat generation in a single module.Segment AnalysisSpain Solar Thermal Collectors Market by Type• Concentrating solar thermal collectors in Spain serve industrial process heat applications and utility-scale power generation, with the country accounting for almost one third of the global installed capacity of concentrated solar thermal and power systems. The Heineken brewery in Seville hosts the largest solar process heat plant in Europe, a 30 MW parabolic trough installation that delivers 28.5 GWh of solar yield annually, covering approximately 50% of the factory's 56 GWh heat demand with parabolic troughs measuring 12 metres by 5.77 metres identical to those used in large concentrating solar power plants.

The SunDial collector, based on three Spanish patents and developed through the H2020 ASTEP project, consists of two parallel rows of linear Fresnel collectors mounted on a rotating platform that tracks the sun, targeting medium-temperature industrial processes. Suncom Energy's SunFleet system uses parabolic SunArcs mirrors to concentrate sunlight onto a receiver where circulating liquid is heated, expanding its innovative solar heat technology to Spain for industrial sustainability applications.• Non-concentrating collectors represent the overwhelming volume of Spanish installations, encompassing flat plate and vacuum tube technologies for residential domestic hot water, commercial applications, and low-temperature industrial processes. Termicol manufactured flat plate collectors for low-temperature applications below 100°C with a production capacity exceeding 200,000 square metres annually, though the company entered insolvency in 2025. The Código Técnico de la Edificación mandates a minimum percentage ranging from 30% to 70% of annual domestic hot water energy requirements be met with solar thermal energy, with the percentage depending on geographical location and building demand. Spanish manufacturers exported 50,000 square metres of collectors to 51 countries in 2024, maintaining activity in export markets despite domestic demand contraction.Spain Solar Thermal Collectors Market by Application• Water heating remains the foundational application for solar thermal collectors in Spain, anchored by the CTE building code requirement that all new and renovated buildings cover 30% to 70% of domestic hot water demand through solar thermal energy. The Institute for Energy Diversification and Saving has calculated that implementation of these energy requirements will reduce building energy consumption by 30% to 40% and associated CO2 emissions by 40% to 55%.

Despite the regulatory mandate, residential installations declined sharply in 2024 and 2025, with ASIT attributing the contraction to economic uncertainty and the absence of dedicated incentive programmes for homeowners.• Space heating and cooling applications are gaining momentum through district heating integration and hybrid system deployment. The Ólvega district heating network, operational since 2012 and serving 162 homes plus ten public and private buildings, integrated a hybrid solar field of 543 panels in 2025 that produces 800 kW thermal and 200 kW electrical output, generating 1.3 GWh of thermal energy annually and reducing the network's biomass consumption by 28%. Rebi has replicated the Ólvega system at its Cuenca heat network, incorporating a flue gas recuperator to improve circuit efficiency. Solar cooling applications using absorption chillers remain at an early stage of commercial deployment in Spain.• Industrial process heat represents the most significant growth frontier, with ASIT President Oleguer Fuentes confirming that food, beverage, chemical, and textile sectors are incorporating solar solutions for processes between 30°C and 400°C, with plant capacities expanding from two MWth to over 30 MWth and heat costs in the range of 20 to 30 euros per megawatt hour. The Heineken Seville brewery hosts Europe's largest solar process heat plant at 30 MW capacity, delivering 28.5 GWh annually and covering 50% of the factory's heat demand through a 20-year heat supply agreement with ENGIE España. The Valencia brewery installation, developed by Kyotherm and CSIN, delivers at least 3,500 MWh of solar steam per year and covers 10% of the site's steam consumption.

The Spanish industrial solar thermal sector has a production capacity of approximately one million square metres, yet factories operated at only 8% of their potential in 2024.• Swimming pool heating applications have advanced through innovative installations, including a 300 kW micro-CSP plant installed in Valdepeñas that heats the Los Llanos municipal pool using concentrating collectors capable of reaching temperatures above 200°C, achieving an average gas savings of 60%. La Rinconada in Seville installed an air-based solar heating system for its indoor pool, while Barcelona's swimming club deployed 1,041 PVT panels across 5,500 square metres of rooftop surface. The applications demonstrate the versatility of solar thermal technology across different collector types and temperature requirements for recreational water heating.• District heating applications are expanding through pioneering projects that integrate solar thermal into existing networks. The Ólvega installation represents the first hybrid solar field coupled with a high-temperature heat pump in Spain, generating 1.3 GWh annually and covering 28% of the network's thermal production. Rebi leads the national district heating development with eight projects funded through a 12.4 million euro allocation from European funds, replicating the Ólvega model across multiple locations. The Torrelago district heating network represents another case study where biomass boilers combined with solar thermal energy are being analysed for technical and economic feasibility, covering domestic hot water demand for the residential area.• Power generation through concentrating solar thermal is anchored by Spain's fleet of 49 thermosolar plants with more than 2,300 MW installed capacity, representing almost one third of global concentrated solar thermal and power capacity.

The Plataforma Solar de Almería, operational since the 1980s, remains a global reference research facility for central receiver and parabolic trough technologies. Tewer Engineering has worked for over a decade on heliostats and parabolic trough collectors for concentrated solar thermal and power systems, contributing to Spain's leadership position in utility-scale solar thermal electricity generation.• Other applications including desalination and agricultural drying remain at research and pilot stages, with the SunDial collector developed through the H2020 ASTEP project representing an innovative medium-temperature solution applicable to agricultural and industrial processes. The Universidad Politécnica de Madrid has hosted experimentation of the SunDial collector at TRL4 level, validating its optical behaviour and thermal performance for industrial process heat integration. Commercial deployment in desalination and agricultural drying has not yet materialised at scale in the Spanish market.Spain Solar Thermal Collectors Market by End-User• Commercial end-users including hotels, hospitals, and public buildings represent a significant segment supported by the CTE mandate requiring solar thermal coverage of domestic hot water demand in new and renovated buildings. The Instituto para la Diversificación y Ahorro de la Energía has allocated 355 million euros in aid for strengthening the industrial value chain linked to the energy transition, with solar thermal explicitly included among eligible technologies. Spanish manufacturers exported 50,000 square metres of collectors to 51 countries in 2024, maintaining commercial activity despite domestic demand contraction.• Residential end-users constitute the largest installed base with more than 5.2 million square metres of collectors deployed across Spanish households, anchored by the CTE building code requirement for 30% to 70% solar thermal coverage of domestic hot water demand.

The market experienced a severe contraction in 2024 and 2025, with ASIT reporting the weakest year in two decades for new installations and attributing the decline to economic uncertainty and the absence of dedicated residential incentive programmes. Approximately 127,000 housing starts were recorded in 2024, a 16.7% increase over 2023, with nearly 98,000 units completed, providing a foundation for market recovery as construction activity accelerates.• Industrial end-users represent the most significant growth opportunity, with ASIT President Oleguer Fuentes confirming that food, beverage, chemical, and textile sectors are incorporating solar solutions for processes between 30°C and 400°C at increasingly large scales. The Heineken Seville brewery hosts Europe's largest solar process heat plant at 30 MW, delivering 28.5 GWh annually and covering 50% of the factory's heat demand under a 20-year heat supply agreement. The industrial solar thermal sector has a production capacity of approximately one million square metres, yet factories operated at only 8% of potential in 2024, indicating substantial underutilised manufacturing infrastructure that could be activated as industrial demand grows.• Utility end-users engage with solar thermal through district heating network integration and concentrated solar power generation. The Ólvega installation represents the first hybrid solar field coupled with a high-temperature heat pump in Spain, generating 1.3 GWh annually and covering 28% of the network's thermal production for 162 homes and ten public and private buildings. Spain's fleet of 49 thermosolar plants with more than 2,300 MW installed capacity represents almost one third of global concentrated solar thermal and power capacity, positioning the country as a global leader in utility-scale solar thermal electricity generation. Considered in this report• Historic Year: 2020• Base year: 2025• Estimated year: 2026• Forecast year: 2031Aspects covered in this report• Solar Thermal Collectors Market with its value and forecast along with its segments• Various drivers and challenges• On-going trends and developments• Top profiled companies• Strategic recommendationBy Type• Concentrating• Non-ConcentratingBy Application• Water Heating• Space Heating & Cooling• Industrial Process Heat• Swimming Pool Heating• District Heating• Power Generation• Other Applications(Desalination, Agricultural/Drying applications)By End-User• Commercial• Residential• Industrial• Utility.