First external growth operation for Citron, founded by the duo Vianney Raskin and Maxime Perthu and specialized in the energy transition of buildings. After raising €20 million from Eiffel Investment Group, via its impact fund Eiffel Essentiel, as well as from Entrepreneur Invest and Bpifrance, in 2023, the company acquired iQspot. "It was an obvious choice for us, given the complementary nature of the two companies and their differences," explains Vianney Raskin, contacted by Business Immo.