Germany renewable primary consumption of solar thermal
Germany renewable primary consumption of solar thermal stood at 33.28 PJ in 2025. It is one of the indicators in the Energy balance table (Value · Annual), with a complete series running from 2003 to 2025. The complete series with an interactive chart, free to download.
This indicator in the Energy balance table
| Indicator | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Total | 2,189.56 | 2,127.23 | 2,079.31 | 2,069.35 | 1,981.47 | 1,987.63 | 1,921.2 | 1,844.46 | 1,807.96 | 1,696.01 | |
| Solar thermal | 33.28 | 31.71 | 32.85 | 35.04 | 30.78 | 32.45 | 31.2 | 32.24 | 28.2 | 27.38 | |
| Geothermal energy | 19.18 | 18.11 | 16.64 | 17.36 | 16.62 | 15.62 | 13.96 | 12.64 | 10.7 | 11.21 |
Understanding germany renewable primary consumption of solar thermal
Thermal heat absorbed from solar radiation by glazed flat-plate collectors and evacuated tube systems is tracked in this component. The series measures the usable heat energy delivered for residential hot water preparation, building space heating, and solar-assisted district heating networks. Primary consumption is defined directly as the physical heat output extracted from the collector fluid. This focus on heat separates the measure completely from the solar photovoltaic row, which records electricity generated by semiconductor panels, as well as from ambient heat and geothermal energy rows that capture environmental warmth through different extraction technologies. Industrial process heat generated by solar collector installations is also contained within this thermal scope.
Understanding solar thermal data requires recognizing that nearly all systems operate off-grid without centralized utility metering, meaning figures are estimated through models combining installed collector surface area, equipment sales statistics, and regional weather irradiance data. Initial estimates are frequently adjusted in subsequent reporting rounds as manufacturer dispatch surveys, building modernization registries, and scrappage estimates are updated. Year-on-year comparisons provide a meaningful assessment of collector deployment by evening out seasonal weather fluctuations. Users should avoid equating solar thermal heat with ambient heat harvested by heat pumps, as solar collectors require direct solar radiation rather than mechanical heat pump compression.
Frequently asked questions
- How is solar thermal consumption measured if individual household collectors have no utility meters?
- Statisticians calculate energy output using empirical models based on cumulative installed collector surface area, equipment sales data, and regional solar irradiance measurements.
- Does this series include power produced by solar photovoltaic panels?
- No, electricity generated by solar photovoltaic systems is tracked separately under its own dedicated row.
- What causes updates and revisions to historic solar thermal data?
- Revisions occur when equipment manufacturing sales, system decommissioning rates, and building heating surveys are updated with finalized industry data.