The French government plans next year to begin making heavy users of household and transport fuels bear more of the tax burden. President Nicolas Sarkozy is expected to say in coming weeks that such a shift is necessary to nudge French citizens toward cleaner alternatives.
The tax would reportedly start at about 14 euros (or $20) for each ton of CO2 emitted, and could rise to levels of around 100 euros ($143) for each ton by 2030. That could mean substantial increases in the price of gasoline and diesel, as well as a sizable jump in the cost of keeping homes warm.
But skeptics say the idea may have less to do with clean energy, and more to do with a desire on the part of Mr. Sarkozy’s government to find new ways to keep the national debt in check.