Policy requirements should be ambitious yet deliverable. The proposals that all heating should be provided through low carbon fuels (not fossil fuels), and no new developments should be connected to the gas grid, are supported. The space heating requirements proposed in the Plan exceed Building Regulations and the Topic Paper states that the requirements included in the Plan are in line with the recommendations of the Committee on Climate Change and also align with those recommended by the London Energy Transformation Initiative. It is important that the requirements are demonstrably deliverable in the context of new development In Greater Cambridge. Likewise, an ambition for proposals to generate at least the same amount of renewable energy (preferably on-plot) as they demand over the course of a year is understood but also needs to be demonstrably deliverable in the context of new development In Greater Cambridge.