By Paul Brown
Virtually all the world’s demand for electricity to run transport and to heat and cool homes and offices, as well as to provide the power demanded by industry, could be met by renewable energy by mid-century.
This is the consensus of 47 peer-reviewed research papers from 13 independent groups with a total of 91 authors that have been brought together by Stanford University in California.
Some of the papers take a broad sweep across the world, adding together the potential for each technology to see if individual countries or whole regions could survive on renewables.
Special examinations of small island states, sub-Saharan Africa and individual countries like Germany look to see what are the barriers to progress and how they could be removed.
In every case the findings are that the technology exists to achieve 100% renewable power if the political will to achieve it can be mustered.
Once proper energy efficiency measures are in place, a combination of wind, solar and water power, with various forms of storage capacity, can add up to 100% of energy needs in every part of the planet.
Stanford puts one of its own papers at the top of the list. It studies the impacts of the Green New Deal proposals on grid stability, costs, jobs, health and climate in 143 countries.
With the world already approaching 1.5°C of heating, it says, seven million people killed by air pollution annually, and limited fossil fuel resources potentially sparking conflict, Stanford’s researchers wanted to compare business-as-usual with a 100% transition to wind-water-solar energy, efficiency and storage by 2050 – with at least 80% by 2030.
By grouping the countries of the world together into 24 regions co-operating on grid stability and storage solutions, supply could match demand by 2050-2052 with 100% reliance on renewables. The amount of energy used overall would be reduced by 57.1%, costs would fall by a similar amount, and 28.6 million more long-term full-time jobs would be created than under business-as-usual.
Clean Air Bonus
The remarkable consensus among researchers is perhaps surprising, since climate and weather conditions differ so much in different latitudes. It seems though that as the cost of renewables, particularly wind and solar, has tumbled, and energy storage solutions multiplied, every part of the world can now find a system that edges fossil fuels out in costs.
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