David's interview with Ashok Gupta, a Senior Energy Economist at NRDC for Climate and Clean Energy who served on New York City's Sustainable Energy Policy Task Force under Michael Bloomberg. Ashok's work has been highly recognized including the ACEEE lifetime achievement award. In our informal free flowing conversation, Ashok and I touch upon the importance of the building envelope, integrating renewable energy, and reflections on the COP26 Glasgow Summit.