- And now an overview of a few more market figures:
Flat-plate collector sales fell more sharply in 2023 (-12 %) than vacuum tube collector sales ( 6 %). This was due to the fact that flat-plate collectors are mainly used in multi-storey residential buildings in cities where there are mandatory laws for solar water heaters in place. As the construction sector is now in sharp decline, flat-plate collector sales are also falling. - The Chinese market statistics differentiate between small systems for residential housing units and the engineering segment, which includes larger systems for all other customers. In 2023, the share of the engineering segment was 76 % of the newly installed collector area. This is a bit lower than 2022 (83 %), but still higher than 2021 with 72 %.
