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 fromEiffel Investment Group via its Eiffel Essentiel impact fund, and from Entrepreneur Invest in 2023, it has now acquired iQspot. "It was an obvious choice for us, given the complementary nature of the two companies and their differences," says Vianney Raskin, contacted by Business Immo.