Fossil fuel-rich Russia has for the first time set out a greener economic path for the coming three decades, in a long-term, low-carbon development plan released this week.

It pledges to cut planet-warming emissions by a third by 2030 from 1990 levels, when the heavily industrial Soviet Union collapsed, although that represents an increase in Russia's greenhouse gas pollution from today.

Climate experts said the strategy and 2030 target were not ambitious enough but did signal growing political and business interest in tackling climate change in an economy that is one of the world's biggest suppliers of oil, gas and coal.