Photovoltaic cells
A few years ago we had a solar hot water panel fitted to the house, today we had a set of photovoltaic panels fitted. While in a standard market this would not be a financially viable proposition the feed in tariff means that the unit price from selling the excess power during the day (the feed in tariff) is about twice the wholesale price of electricity and therefore they are a viable proposition with the feed in tariff being guaranteed for the next twenty five years. The value of the feed in tariff is such that some companies are fitting the PV panels for free in return for the income from the excess power following domestic consumption, we have not gone for such a deal and have instead paid the full cost however we do then keep the full profit and take the risk that the guarantee will not be maintained.