The emissions reductions that could come out of the Paris climate talks will be very expensive — even with some high-profile help.
Participating countries will agree to double their clean energy R&D budgets, which could have an even greater effect than the initial infusion of cash.
At the same time, The New York Times reports national funding efforts could dwarf Gates' plan.
"As Secretary of State, Hillary Rodham Clinton pledged that developed countries would send $100 billion annually to poor countries by 2020 to help them pay for the energy transition," said a writer for The New York Times.
That's $102 billion so far, plus whatever increases come out of those bolstered research budgets. But it won't be enough. (Video via Intergovernmental Panel on Climate Change)
Consider India, the fifth largest national energy economy and one of the expected power players during the Paris talks.
Estimates from the country's U.N. climate pledge indicate it would need some $2.5 trillion to fund its climate goals through 2030.
So in some ways, this is just the latest reminder that we should temper our expectations.
This video includes music by Birocratic / CC BY 3.0.