DELIVERING DEEP RETROFIT FOR ALL In summary EnerPHit can offer enormous improvements to both residential and commercial building owners and users. The Passivhaus methodology upon which it is based, offers transparency, quality, flexibility and proven performance which could unlock the massive energy and carbon savings we need from our existing buildings by 2050. By targeting best practice in building retrofit and establishing a clear route for every building to achieve this, it is possible to both improve thermal comfort and avoid the worst impacts of climate change. By providing clear signals to industry of what is required, whilst providing financial stimulus and consumer guidance to early adopters, government can support the much- needed growth of the retrofit industry. As shown over the last 10 years modest piecemeal energy efficiency measures can result in numerous damaging unintended consequences and fail to deliver the much-needed improvements to our existing building stock. It is hoped that over the next 10 years policymakers will target best practice to ensure that over the next 30 years our existing buildings can provide low-energy, low-carbon comfort for all. | 29