What is the best way for investors to decarbonise the global energy system? Our new, 18-page report argues this outcome is achievable by 2050, but a new ‘venturing’ model is needed, to incubate better technologies. CO2 budgets can also be stretched furthest by re-allocating to gas, lower-carbon oil and lower-carbon industry. The biggest risk is “divestment”, a grave mistake that makes decarbonisation near-impossible.