The International Renewable Energy Agency reports that, in some cases, new renewable power generation capacity has electricity costs lower than the cheapest source of new fossil fuel‑fired capacity.

Researchers at the Korea Institute of Science and Technology created a sodium high-capacity material that can store 1.5 times more electricity than the graphite anode.

A 6 million tonne copper supply gap will open up by the mid-2020s but projects needed to plug that gap face uphill battles.