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PV Newsletter - Jan 2011

Photovoltaic systems – how they really work

As the nights draw in and the days get shorter the photo voltaic panels carry on generating green electricity for us. In the summer months, the system would be generating from 6am until 9pm but now we are lucky if it goes from 8am to 4pm. My long suffering husband now asks me if it is bright enough for him to make a cup of tea! Poor soul. Thanks to all of you who have been to see the system and any who still want to come, please do so. I have become quite obsessed with it and the LSH is only too pleased to have me prattle on to someone else so he can have some peace.

Onto the financial side of things. I submitted my first meter reading to EDF in September and in November received my first payment for the feed-in-tariff and export tariff. The panels had generated 810 kWh and I received £346.68, tax free. So now I will be receiving a regular payment every quarter. Some electricity providers combine the normal electricity bill with the generated payment but EDF keeps the two separate.

As I don’t know how much of our own electricity we are using I compare my bill from last year to the same period this year.

Last year 28/08/09 – 26/11/09 we used 1544 kWh

This year 28/08/10 – 26/11/10 we used 968 kWh

Saving a total of 576 kWh or 37%

On our tariff, that is a saving of £46, taking the total saving to over £110 in only six months. It will be interesting to see what the next three months will bring with December and January being traditionally the dullest months of the year.

On a green note – for every kWh the panels generate I am avoiding about .43kg of CO2. This is calculated by the Department of Energy & Climate Change who claim that for 2009 the power stations produced 151 million tonnes of the stuff!

As usual, feel free to email any questions to me at This email address is being protected from spambots. You need JavaScript enabled to view it.

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