The writer is co-founder of Microsoft, founder of Breakthrough Energy and co-chair of the Bill & Melinda Gates Foundation

Before the last major COP meeting, in Paris in 2015, innovation was barely on the climate agenda. This year in Glasgow it will take centre stage. Shifting the world’s focus to inventing clean technologies was among the greatest successes of the Paris COP. Continuing that trajectory is, perhaps, its biggest opportunity this year, because innovation is the only way the world can cut net greenhouse gas emissions from roughly 51bn tonnes per year to zero by 2050.

There is now significantly more money for basic research and development and more venture capital for clean start-ups in hard-to-decarbonise sectors than ever before. As a result, some important clean technologies — like sustainable aeroplane fuel, green steel and extra-powerful batteries — now exist and are ready to scale up.