How to get the world to 100% re­new­able energy by 2050

NZ Lifestyle Block - - Notebook -

An in­ter­na­tional re­search team has put to­gether a roadmap for how most of the world could shift to 100 per cent re­new­able energy sources by 2050.

The Stan­ford Univer­sity-led team notes that 139 coun­tries could be en­tirely pow­ered by wind, wa­ter, and sun­light, which would mean around 24 mil­lion long-term jobs, a de­crease of be­tween four and seven mil­lion air pol­lu­tion-re­lated deaths, a stable energy price, and a likely sav­ing of over US$20 tril­lion in health and cli­mate costs.

The sci­en­tists as­sessed the raw re­new­able energy re­sources avail­able to each coun­try, the num­ber of wind, wa­ter, and so­lar energy gen­er­a­tors that would be needed to be 80 per cent re­new­able by 2030 and 100 per cent by 2050, how much land and rooftop area these power sources would re­quire (around one per cent of to­tal avail­able, with most of this open space be­tween wind tur­bines), and how this ap­proach would re­duce energy de­mand and costs, com­pared with a busi­nes­sas-usual sce­nario.

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