The UK’s Green Deal legislation went through Parliament this week – Hurrah! It allows residential retrofit loans to be repaid via electricity bills, and ties the loan to the house rather than householder. It will significantly reduce the risks of default, eventually allowing investment grade (climate) bonds to be issued against portfolios of these loans. It’s a model that will need to be adopted in other countries if we’re going to reduce emissions from the housing sector – but, it won’t by itself solve the problem of take-up. That’s the separate problem of ‘adoption’ (we’re working on it).