After spending 5 years in the French Weather Forcast Institute (Meteo-France) in the field of thermometry metrology, Dr Solve joined the BIPM Radiometry-Photometry group. In 2001, he conducted a large international comparison of Water Triple Point Cells where 20 National Metrology Institutes (NMIs) were involved. The quality of the results led to a modification of the definition of the Kelvin. In 2004, his experience in metrology was extended to the field of Electricity when he moved to the BIPM DC voltage laboratory. He became responsible for this activity in 2006 and is in charge of two on-going international comparison programs where 35 NMIs participated.