This brief was prepared by the UNECE Task Force on Carbon Neutrality and a dedicated team of high-level international experts that provided quality control, advice, and validation of the findings. The project team especially wishes to thank Michel Berthelemy, Chrissy Borskey, Giula Bisconti, Hannah Bronwin, Vladimir Budinsky, Philippe Costes, Antoine Herzog, David Hess, Thomas Gibon, Kirsten Ketilson, Zuzana Krejcirikova, King Lee, Polina Lion, James Murphy, Henri Paillere, Jozef Sobolewski, Antonio Vaya Soler and Harikrishnan Tulsidas for their expertise and continuous support. Iva Brkic, Oleg Dzioubinski and Scott Foster of the UNECE Sustainable Energy Division contributed to this report through guidance, comments, and oversight.