Change in carbon dioxide emissions (IMAGE) University of Utah Caption Change in CO2¬ emissions for each 1% increase in energy efficiency and renewable energy. In all the sectors combined, both energy efficiency improvement and renewable energy sources result in reductions in CO2 emissions: a 1% increase in each of energy efficiency and renewable energy sources results in 0.61% and 0.70% reductions in CO¬2 emissions respectively. In the commercial sector, both energy efficiency improvement and renewable energy development, practically, do not lead to statistically significant reduction in CO¬2 emissions. Energy efficiency improvement results in some reductions in CO2 emissions in the residential, industrial, and transportation sectors. Most surprisingly, a 1% increase in renewable energy sources generates nearly 0.4% increase in carbon emissions. Credit Lazarus Adua Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms. License CC BY-NC-SA Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.