The best way to demonstrate the benefits of self-funding energy efficiency improvements via the Green Deal is with an example.
Self-funding Double Glazing and a Boiler Replacement
Assume the average cost of a new uPVC window is £800, and in an average property (3 bedrooms) that will mean replacing about 12 windows. So, the total cost = £9,600
A new energy efficient boiler on the other hand will cost £2,500.
Total investment with self-funding is £12,100.
Benefits of Self funding
Going via the Green Deal you will receive cashback for all measures taken out.
Cashback on double/ triple glazing is £20m2. Average window size is 1.68m2
Total cashback received is £403.
Cashback on boilers is simply £270
Total Benefit of Self-funding the Green Deal
Cashback of £673