What if this FIT is eliminated before 25 years are up?
These solar installers are taking a pretty big risk, unless they continue to own the equipment.
Let's take the ideal scenario of receiving £800 a year in perpetuity with a discount factor of 8% for the risk.
NPV of revenues is £10,000. How much does the equipment and NPV of maintenance cost?
edit:
Even if say the FIT is adjusted for inflation at say a long term average of 3%, NPV of revenues is still only £16,000 in perpetuity.
edit2:
Well apparently RBS are financing the whole thing, so I imagine they must be getting a lot more than £800 revenue a year per household (for what the BBC article says is £20,000 worth of equipment). As otherwise it currently doesn't make any sense.