How shall we value the CO2 tons that we save while financing public and social infrastructures ? This is the issue we have to solve from now on and up to 2050.Quite a big chalenge for us as well as for the coming generations taking into account that households can not afford the costs of this energy transition. In France, Yellow Jackets already told us in 2018 that even 12 cents of tax carbon increase per liter of gasoline (that is to to say up to 86,2 euros/tCO2 only) was definitively unbearable (do not forget 1789 by the way) ! Now, German households also have to deal with that same issue while the energy mix accros the river Rhine is 10 times less carbon-free than the French one. Good luck then, to all of us!We manage Private Debt Funds, financing social and public infrastructures in France. More than 500 millions euros have been (re)invested already splitted between more than 150 claims directly originated and/or purchased from third parties on the secondary market.Public Finance Fund #4 was launched at the end of 2020 to bring total assets under management above 500 millions euros.Projects and assets financing of the regulated economy will be the bulk of this strategy from now on, with high social and environmental standards.