“To approach any 100 percent renewable energy scenario, improved energy efficiency is needed in both energy-supply sectors and energy-consumption sectors. More than 60 percent of energy produced in the United States in 2016 across all sectors was wasted.
Driving the discussion about renewable energy is the need to reduce global greenhouse gas emissions. The 2015 Paris Agreement aims to limit the total global warming due to human activities to 2 degrees Celsius. Pairing energy efficiency with renewable energy deployment can achieve 90 percent of emissions reductions required to meet this goal, according to IRENA.
Only around 20 percent of the global energy supply is currently renewable. Moving closer to 100 percent will require deep shifts in the global energy system.”
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