This research project examines the potential for Project Drawdown's climate solutions framework to inform and expand the City of Toronto's strategies for achieving its ambitious goal of net zero emissions by 2040. Through a systematic analysis of over 90 Drawdown solutions, this case study research identifies high-impact measures not currently addressed in Toronto's TransformTO climate action plan. The study collects data on each solution's scientific basis, implementation status locally, and feasibility within Toronto's geographic, economic, and political context during 2021-2022. Solutions are evaluated and prioritized based on their capacity to significantly reduce Toronto's emissions by 2040, considering costs, benefits, and barriers. The literature review synthesizes current academic research on sustainability, innovation, and systemic transformation. These concepts inform strategies for holistic and participatory climate action that go beyond technological solutions. Proposals are developed for social, systemic, and regenerative innovations that can accelerate Toronto's transition. The research finds that solutions including high-speed rail, methane management, offshore wind, plant-based diets, and alternative refrigerants are overlooked opportunities for Toronto to fulfil its climate commitments. A multi-pronged approach addressing these gaps through technical and social innovations, public engagement, policy reform and systems thinking is recommended. The study aims to derive tailored, evidence-based strategies to expand Toronto's climate action plan, incorporating Drawdown solutions for a comprehensive roadmap to equitable net zero emissions. This case study provides a model for contextualizing global climate solutions to local sustainability goals.