Dont think of solar being a costly short term investment, think of it as a long term investment to the future. Looking at the recent anouncements 'rise in energy costs of around 6-8%' by several major energy providers, now has never been a better time to invest.
Things to consider for solar PV in your homeMore and more technology in the home (smart home technologies etc.)2016 new homes to be carbon freeLighting on long winter nightsEnergy bills rising year on year
On the plus side you will beHelping the planetProducing your own free electricBeing paid to supply the networkIncome guaranteed for the next 20 yearsMaking savings on your existing energy billBetter returns than leaving your savings in a bank account long term.
In recent survey's customers who’d had PV system's installed for over 1 year. Based on an average user, consuming 3300kWh of electricity a year, at a cost of £526. An average system with 12 solar panels will generate 2960kWhs of electricity per year (figure from HomeSun). The average household will use 37.5% of the electricity the panels generate.
(Based on figures from the Suncities Monitoring Data Review, Kirklees Council, 2007, which found that households use between 25% and 50% of the electricity their solar panels generate.)