Close to 80 percent of the world's energy supply could be met by
renewables by mid-century if backed by the right enabling public policies a new report shows.
The findings, from over 120 researchers working with the Intergovernmental Panel on Climate Change (IPCC), also indicate that the rising penetration of renewable energies could lead to cumulative greenhouse gas savings equivalent to 220 to 560 Gigatonnes of carbon dioxide (GtC02eq) between 2010 and 2050.
The upper end of the scenarios assessed, representing a cut of around a third in greenhouse gas emissions from business-as-usual projections, could assist in keeping concentrations of greenhouse gases at 450 parts per million.
This could contribute towards a goal of holding the increase in global temperature below 2 degrees Celsius – an aim recognized in the United Nations Climate Convention's Cancun Agreements.
The findings, launched today after being approved by member countries of the IPCC in Abu Dhabi, United Arab Emirates, are contained in a summary for policymakers of the Special Report on Renewable Energy Sources and Climate Change Mitigation (SRREN).
The summary is a short version of a roughly a thousand page comprehensive assessment compiled
by over 120 leading experts from all over the world for IPCC‘s Working Group III.
With consistent climate and energy policy support, renewable energy sources can contribute substantially to human well-being by sustainably supplying energy and stabilizing the climate,‖ said Professor Ottmar Edenhofer, Co-Chair of Working Group III at the report launch. However, the substantial increase of renewables is technically and politically very challenging‖ he added.