Solar thermal jobs

Solar thermal teams design, build, and service collectors that turn sunlight into heat rather than electricity: hot water for homes, collector fields that feed district heating networks, and steam for factories. New engineering work sits mostly in those large plants, while rooftop solar water heating keeps losing ground to heat pumps across Europe.

What the jobs involve

• Mechanical design engineers develop collectors and the test benches that validate them; at GlassPoint, parabolic troughs enclosed in a glasshouse that raise steam for industry.
• Manufacturing engineers set up collector production with outside suppliers and turn building a solar field into a repeatable process.
• Project engineers size a collector field, its heat store, and its link to a heat network or a factory.
• Heating installers fit and service domestic systems: collectors, pump station, cylinder, and the glycol-filled solar circuit.

Who is hiring

GlassPoint recruits design, manufacturing, and electrical engineers at its technology centre in Stuttgart. District heating fields are ordered by municipal utilities such as Stadtwerke Leipzig and supplied by collector makers such as Ritter XL Solar; industrial plants are built by developers such as Newheat in France. Plumbing and heating firms fit domestic systems, often alongside heat pumps and boilers.

Skills and qualifications

GlassPoint asks design engineers for a mechanical engineering degree, Autodesk Inventor, and experience with manufacturing drawings. Its manufacturing engineers apply design for manufacture and assembly (DFMA) and run factory and site acceptance tests. Adverts are in English, with German a plus.

British installers start with an NVQ Level 2 or 3 in plumbing or heating, then add the LCL Awards Level 3 award in solar thermal hot water systems, which MCS recognises.

Large fields feed heat networks, so district heating hydraulics and thermal storage experience carry straight over. Plants that turn the sun's heat into electricity are a separate field, concentrated solar power. The solar energy career guide covers the far larger photovoltaic job market and its pay.

What is changing

Global sales of solar heat fell 14% in 2024 as heat pumps and electrification policies squeezed systems for buildings. Industrial plants slipped too: developers commissioned 28 MW in 2025, against 120 MW in 2024, as low gas prices and subsidy cuts in the Netherlands and Austria made customers wait.

District heating carries the large projects: Leipzig's 65,208 m² collector field, Germany's largest, went into operation in 2026, and more are being planned or built, from Lübeck to Erkrath.