Wednesday, 11 August 2021

2021 Solar Output Drops Compared to 2020

 The exceptional summer of 2020 hasn't been replicated in 2021 and the solar electricity generation from our panels has dropped substantially. I guess this is to be expected as it then averages out the numbers back standard.

It's quite noticeable how much lower output the 2021 months are compared to 2021 for our solar panels in Kent UK.

March 2020

334 kWh

March 2021

260 kWh

May 2020

517 kWh

May 2021

383 kWh

Jump forward to July and 2021 and 2020 are virtually identical at 394 vs 390 kWh.

May 2020 at 517 kWh was the highest monthly generation that we've had from our solar panels over the 10 years that we've had them installed.

2021 Solar Output Drops Compared to 2020
2021 Solar Output Drops Compared to 2020

Tuesday, 15 June 2021

Best Months of Year for Solar Panels UK - Not Expected!

We've had our solar panels for over years now so we've collected a lot of data showing the generation over the days and months since 2011. Some interesting patterns have emerged that aren't necessarily what you would expect.

There are the more obvious extreme generation examples where you get very high and very low months depending on the weather but the month that is routinely lower than you would imagine is June.

Over the 10 year average data June is consistently lower than either May or July which is really odd as you would expect June to be the highest month for solar electricity generation as it has the longest days. Both May & July should be lower because the daylight hours are either lengthening or shrinking compared to June.

May total - 4064kWh - average 406kWh

June total - 3943 kWh - average 394 kWh

July total - 4155 kWh - average 415 kWh

So as you can see June is on average lower than May or July. This isn't just a quirk from a particularly bad June or good May or July but seems to be a genuine trend. Out of the 10 years, 5 of them have June lower than May & July and in only 3 years is June higher than both May and July.

Tuesday, 20 April 2021

British Gas FIT Payment Installation ID Problems

 I've had my solar panels for 10 years this year and over that time registered the generation meter readings every 3 months or so to get the FIT (Feed in Tariff) payments from British Gas.

I've come to do the same today and the British Gas website is refusing to accept the installation ID for my system. The number I have had since the system was fitted starts 95000 and is 12 digits long yet the BG FIT payment screen insists that the ID must begin with a 5 and be 10 digits long.

It would appear that British Gas have made some amendments to their FIT payment screens but not actually checked whether they work.

Update - on checking elsewhere it appears that BG have generated new Installation IDs but failed to actually inform any of the solar owners what the new numbers are or even to put a message on their website to let people know that it has changed.

Quite incredibly the help icon next to the error that states the installation ID must be 10 characters actually shows a 12 digit number next to it!

Very poor show British Gas! Maybe it's a deliberate ploy to stop people claiming their FIT payments!

Sunday, 8 November 2020

2020 - Worst Ever October for Solar Panels

 As an example of how nature evens out the weather in 2020 we have now had the best and worst months for solar generation since we had panels installed in 2011.

April and May 2020 beat every previous record for our system but October has now been the lowest generated for an October by a significant margin

Average for October was 205kWh with a previous minimum of 185kWh and high of 273kWh in 2018. This month was only 163kWh of electricity generated

Monday, 1 June 2020

Highest Ever Monthly Solar Generation

I've just seen on the news that May 2020 was the sunniest month on record in the UK. Having just loaded the data for our solar panels the results fully bear this out with May 2020 breaching the 500kWh generation barrier for the first time.

In May 2020 our solar panels generated a whopping 517kWh of electricity from the 3kWp set of panels. That's considerably more than the previous high of 460kWh produced in June 2018 which has the potential to be higher as the days are longer.

As we're still working from home, any additional electricity generated during the day is very welcome as we are using higher than normal amounts and can easily schedule washing machine loads at peak times.

Fortunately the days have been hot but with a cooling breeze which may have helped maximise the electricity produced.

Saturday, 2 May 2020

Sunniest April Solar Electricity Records

According to meteorological records April 2020 was one of the sunniest ever recorded
Sunniest April Solar Electricity Records
Sunniest April Solar Electricity Records

This was also reflected in our solar panel electricity generation, we got 432 kWh of electricity last month considerably up on the average of 360kWh and above our previous best of 415kWh.

2020 has been good so far for solar with both March & April beating previous records. It's a bonus as we're now working from home during the Coronavirus lockdown and using more electricity!

Saturday, 4 April 2020

March 2020 Record Beating Solar

March 2020 will be known for record breaking in relation to Corona Virus Covid-19 but in the UK it was also a record breaking month for solar panel electricity generation. The month seemed somewhat dull and cold but obviously there was more sun than I imagined! The cold temperatures would have also helped the panels be more efficient to improve generation too. Since mid March we have been working from home as a result of the Covid-19 virus requirements to stay inside and only travel for essential food or medicine journeys.

The total for March 2020 was 330 kWh of solar electricity produced

This compares to an 8 year average of 270 kWh with lows of 173 kWh for March 2013. You can see the full data here

Do you have solar panels in the UK? How did your data compare for March 2020? Post in the comments if you have any feedback on your own generation.

March 2020 Record Beating Solar
March 2020 Record Beating Solar