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Long Term Solar Generation History.

Solar LogoOn the old website we did have information about the generation we have achieved from our 22 panel SolarPv array on our East facing roof. For those that were following it, here are the figures which show how variable the sunshine can be in South East Northumberland, season to season, year by year.

SolarPv Generation Chart

Over the 72 months that the system had been installed, working and owned by us until July 25th 2016, we had received a total of £9,189.62 in Fits Payments, which equates to 59.3% of the installation costs tax free, plus the savings on our monthly Electricity bills so yes, it had been a very worthwhile investment.

However, as of July 25th 2016 we sold the system to a 3rd party Solar Equity Release for a cash lump sum plus a 4.8kw battery backup pack.

Why sell? Well we have recouped more than our initial outlay when you add in the Fits payments received to the cash sum we received, plus the value of the storage battery pack and still retain the reduction in electricity bills the Solar PV system gives and will reduce our future bills by using generation the system gives plus that via the battery storage system (the system is setup to charge the batteres 1st, then power the house, then export to the grid any unused energy).

It's still a 'win win' situation though as far as we are concerned.

Looking at the graph above it does show clearly that compared to the 1st quarter of 2017, we had a poor and extended winter that year, with a lot of rain and reduced sunshine hours combining to produce a lot less Solar Generation in the 1st quarter of 2018, which then improved during the summer 'heatwave' though here on the North East Coast, cloud from the North Sea has had an impact on actual generation and things were no better overall than 2018 this year despite the sunshine that appeared over the South of the UK.

SolarPv Annual Generation Chart

Whilst the 1st chart shows the monthly seasonal variations in generation achieved, it is useful to look at the long term trend which you can see in the 2nd chart above. Now from July 2016 when the battery storage system was installed, overall generation output to the system meter fell. Now was that because the systems charges the battery packs 1st before sending the power out to the Home and Grid or was it simply down to a reduced amount of generation because of a lack of sunshine?

We will have to wait a while longer before we can draw any firm conclusions.

Please Note: Subsequent system installations qualified for a smaller Fit payment, but cost less to install as prices reduced considerably and from 2016, incentives for new Domestic Installations ceased to be paid.

Last Update: 19th August 2019

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