Solar thermal jobs

Solar Thermal Jobs in Renewable Energy

Solar thermal work is the collection of solar heat rather than solar electricity: sizing, plumbing, commissioning, and servicing collector arrays that feed hot water tanks, space heating circuits, and industrial process heat. The IEA Solar Heating and Cooling Programme counted 318,000 people working in the production, installation, and maintenance of these systems worldwide in 2023, on an industry turnover of 13.9 billion euros.

The distinction worth clearing up first is with concentrated solar power. CSP also gathers the sun's heat, but it drives a turbine and sells electricity, so it recruits power plant engineers. Solar thermal sells heat, and it recruits from the heating trade: hydraulic design, stratified storage tanks, controls, brazing and pipework, and glycol loops that have to survive stagnation temperatures above 200 degrees on a July afternoon when nobody is drawing hot water.

The market is under pressure, and the numbers say so

Global installed capacity stood at 544 GWth, or 777 million square metres of collector, at the end of 2024, yielding 443 TWh of heat. That is a net decrease of 3% in collector area against 2023. The reason is competition rather than disinterest: heat pumps and PV-driven hot water now chase the same domestic installations, and in most of Europe the small rooftop solar water heater has become a replacement market. Anyone entering the field should read that honestly. The growth has moved to systems too large for a heat pump to serve economically.

Solar district heating carries the large projects

By the end of 2024, 346 solar district heating systems above 350 kWth were in operation worldwide, totalling 1,982 MWth. Denmark alone runs 124 of them, ahead of China with 76 and Germany with 59, followed by Sweden, Austria, Poland, and France. In Leipzig, a 46 MWth field of 65,000 square metres was built to start feeding the municipal network in 2026 and is expected to cover up to a fifth of the city's heat demand in summer. In Groningen, a 48,800 square metre array was paired with waste heat from a data centre and a seasonal store.

Projects on that scale hire differently from rooftop work. They need people who can run a collector field as a civil engineering site and then operate it as a heat asset, which is why experience in district heating and cooling and in thermal engineering tends to be worth more here than solar experience alone.

Industrial process heat is the second growth line. At least 106 new solar process heat plants with a combined 120 MWth were commissioned worldwide in 2024, mostly supplying dairies, breweries, food processors, and textile works with steam and hot water. These jobs sit inside process engineering teams and rarely carry "solar" in the title at all.

Where the vacancies actually appear

Solar thermal is a small pool on Rejobs, and the pattern behind that is worth knowing: the work is usually embedded in a heating or building services role rather than advertised under its own name. The current listing comes from Saman Group, a Dutch installer of 251 to 500 staff based in Barendrecht, hiring a climate systems service engineer who will meet solar collectors alongside heat pumps and boilers.

Searching only for the term will therefore miss most of the market. Installer and service vacancies under solar installation, utility roles in district heating, and process engineering posts in food and drink manufacturing all contain solar thermal work. The broader solar energy guide covers how the heat side and the photovoltaic side of the industry differ in pay, qualifications, and career path.