
Tailored feasibility studies for the decarbonization of industrial plants.
Switching to a renewable energy source such as solar thermal means replacing that supply while keeping the underlying processes themselves unchanged — cutting fuel costs and emissions without disrupting production.
Explore our industrial heat decarbonizations studies in the beverage, food, paper, textile, tobacco, biogas, desalination, chemicals, and other sectors.

Food Sector – Spain (Case 1)
FersiSolar develops tailored solar thermal solutions for the wide range of heat and steam demands found across the food and beverage industry, covering processes such as washing, drying, pasteurization, boiling, sterilization, heat treatment, thermal refrigeration and industrial frying, with temperatures ranging from approximately 30°C to 240°C.
By combining solar thermal with the most suitable thermal energy storage, we adapt each solution to the plant’s processes, temperature levels, operating profile and steam demand, reducing reliance on gas and other fossil fuels. FersiSolar can decarbonize more than 50% of heat consumption and, when combined with other renewable sources, enable 100% clean energy.
Explore our case studies from two food processing plants to see how these tailored solutions are applied.
Textile Sector – Spain
FersiSolar develops tailored solar thermal solutions for the diverse heat requirements of fabric and yarn production, covering washing, drying, bleaching, dyeing, degreasing, fixation and pressing, with plant-wide temperatures ranging from approximately 60°C to 180°C.
By combining solar thermal with the most suitable thermal energy storage, we tailor each solution to the facility’s processes, temperature requirements, operating profile and heat demand. This reduces reliance on natural gas and enables FersiSolar to decarbonize more than 50% of industrial heat consumption, with the potential to reach 100% clean energy when combined with other renewable sources.
Explore our case study to see how this approach can support decarbonization in the textile sector.
Paper Sector – Spain
FersiSolar develops tailored solar thermal solutions, particularly relevant for the drying stage, the most energy-intensive part of pulp and paper production — accounting for up to one-third of total energy consumption in virgin-fiber paper and the majority in recycled paper. This demand is typically met with 130–150°C steam from fossil-fuel boilers, with energy costs representing around 16% of a paper mill’s total expenses.
By integrating solar thermal and thermal energy storage to deliver solutions tailored to each facility’s processes, temperature requirements, operating profile and heat demand. By reducing reliance on natural gas, FersiSolar can decarbonize over 50% of industrial heat consumption and, when integrated with other renewable sources, enable 100% clean energy.
Explore our case study to see how this approach can be applied to a pulp and paper mill.
Tobacco Sector – Türkiye
FersiSolar develops tailored solar thermal solutions for the industrial steam and heating demands of tobacco processing plants, where steam at around 160°C is typically supplied by natural gas boilers alongside trigeneration systems with heat recovery.
By integrating solar thermal with the most suitable thermal energy storage, we can complement existing heat recovery systems and adapt the solution to the plant’s steam demand, temperature requirements and operating profile, reducing natural gas consumption. FersiSolar can achieve more than 50% of decarbonization of heat consumption and, when combined with other renewable sources, enable 100% clean energy.
Explore our case study to see how our solution can enable decarbonization in the tobacco sector.
Biogas Sector – Italy
FersiSolar develops tailored solar thermal solutions for the different temperature levels required throughout biogas and biomethane production: anaerobic digestion at 30–45°C, feedstock hygienisation at around 70°C, and biomethane upgrading at 120–150°C for amine-based systems.
By integrating solar thermal with the most suitable thermal energy storage, we can integrate renewable heat alongside biogas, natural gas and CHP heat recovery, reducing the amount of fuel or recovered heat required to meet the plant’s thermal demand. This can free up more biogas for upgrading and sale, increasing the plant’s marketable biomethane output while reducing fossil fuel consumption. FersiSolar can decarbonize more than 50% of heat consumption and, when combined with other renewable sources, enable 100% clean energy.
Explore our case study to see how solar thermal can contribute to decarbonizing biogas and biomethane production.
Desalination (M.S.F.) – Greece
FersiSolar develops tailored solar thermal solutions for thermal desalination processes such as Multi-Effect Distillation (MED) and Multi-Stage Flash (MSF), supplying the heat required to bring seawater to the required temperature and produce desalinated water through evaporation and condensation.
By integrating CST with the most suitable thermal energy storage, we can adapt the solution to the plant’s thermal demand, operating profile and water production requirements, providing a renewable alternative to electricity-based Reverse Osmosis (RO). In regions such as the Gulf, where RO is widely deployed, CST can offer a competitive alternative to RO powered by renewable electricity, including PV combined with battery energy storage (PV+BESS).
Explore our case study to see how solar thermal can support decarbonization in the desalination sector.
Chemicals Sector – Chile (Case 1)
FersiSolar develops tailored solar thermal solutions for the diverse heat requirements of chemical manufacturing, including reactor heating, distillation, separation, extrusion, drying and mixing, with plant-wide temperatures ranging from approximately 60°C to 260°C. Heat can account for around one-third of total energy consumption, making thermal decarbonization particularly relevant for the sector.
FersiSolar combines solar thermal with the most suitable thermal energy storage to match each facility’s processes, temperature requirements, operating profile and heat demand. This approach can decarbonize more than 50% of industrial heat consumption while reducing natural gas use and can enable 100% clean energy when integrated with other renewable sources.
Explore our case studies from a paint manufacturer and another chemical industry application to see how these solutions can support decarbonization in the sector.
Other industries
Mining
FersiSolar combines solar thermal with the most suitable thermal energy storage to tailor solutions to heat-intensive mining processes, including electrolyte tempering in metallic mineral processing and material drying in autoclave kilns for non-metallic materials such as gypsum. Solar integration can reduce reliance on gas-fired furnaces and decarbonize more than 50% of heat consumption, while combining solar thermal with other renewable sources can enable 100% clean energy. The large available areas at many mining sites offer significant potential for solar installations.
Metallurgy
FersiSolar combines solar thermal with the most suitable thermal energy storage to tailor solutions to metallurgical processes such as refining and galvanizing treatment, adapting to the wide range of temperatures required at different stages. By reducing reliance on fossil-fuel-based heating systems, FersiSolar can decarbonize more than 50% of industrial heat consumption, with the integration of other renewable sources offering the potential for 100% clean energy.
Alcohol (Distilling)
FersiSolar combines solar thermal with the most suitable thermal energy storage to tailor renewable heat solutions to alcohol distillation, where steam at around 140°C is typically generated using natural gas to separate alcohol from water. Integrating solar thermal with the existing steam system can decarbonize more than 50% of heat consumption, while combining it with other renewable sources can enable 100% clean energy.
Beer
FersiSolar combines solar thermal with the most suitable thermal energy storage to tailor solutions to the brewery’s different heat requirements, from hot water at 60–85°C for mashing, sparging and heat recovery to pressurized steam at 140–160°C for wort boiling, cleaning, sterilization and pasteurization. By reducing the natural gas used to generate this heat, FersiSolar can decarbonize more than 50% of industrial heat consumption and, when combined with other renewable sources, enable 100% clean energy.
Sugar
FersiSolar combines solar thermal with the most suitable thermal energy storage to tailor solutions to juice evaporation, syrup boiling and crystallization, where high-temperature steam around 300–315°C is required. By supplementing the natural gas boiler, FersiSolar can decarbonize more than 50% of heat consumption, while integration with other renewable sources can enable 100% clean energy. Evaporation and crystallization are the biggest thermal demands in the refining process.
Cosmetics
FersiSolar combines solar thermal with the most suitable thermal energy storage to tailor solutions to steam systems maintaining internal process temperatures of around 160–170°C. By reducing reliance on natural gas, FersiSolar can decarbonize more than 50% of heat consumption, and when combined with other renewable sources, enable 100% clean energy.





























