This report provides the analysis to support the Green Ribbon Panel’s findings and recommendations. The report reviews the need for GHG reductions and how Ontario’s unique low cost advantages can address this need. The report finds that Transportation, Industry and Buildings heating are the largest sources of GHG emissions, and that addressing Transportation and Industry emissions can improve air quality. The report also outlines how GHG emissions reduction will rely on a greater supply of low carbon electricity. Finally, it reviews how Ontario’s existing clean electricity system can be smartly integrated to meet the demand for new clean electricity at half the cost.