March Solar Generation and Export Numbers
Here is the overview for March 2024. We exported three times the amount we exported in February.
The worst generation day was the 11th with only 1.7 kWh. The best was the 24th when 17.3 kWh was generated.
The best export day was the 23rd with 10.60 kWh. This was all solar. No need to force discharge. The Agile slot prices were basically 0p all day. I turned off the battery and just let the solar export. There were three Octopus Energy Saving Sessions. That earned us 5000 Octopoints. That translates to £6.25. All in all we saved £47.91 from all the Saving Sessions.
Rather than show an export profit, I thought it would be easier to show the cheapest day.
As solar panels output declines over the years I have added the 2023 March generation to the table at the bottom for comparison. Of course weather comes into it as well, but I thought it would be interesting to track.
For the first time this year we had two days being self sustained (more solar than consumed), and fourteen days self sustained (more solar than imported from the grid)
Best Solar Generation
| Date | kWh | |
|---|---|---|
| Generation | 26th May 2023 | 32.90 |
| Front generation | 14th June 2023 | 19.80 |
| Back generation | 7th June 2023 | 14.70 |
| Worst generation | 12th December 2022 | 0.20 |
Solar Generation
| Date | kWh | |
|---|---|---|
| Best generation | 24th March 2024 | 17.30 |
| Best front generation | 24th March 2024 | 10.90 |
| Best back generation | 24th March 2024 | 6.90 |
| Worst generation | 11th March 2024 | 1.70 |
| Worst front generation | 11th March 2024 | 1.00 |
| Worst back generation | 11th March 2024 | 0.70 |
Best Solar Export and Profit
| Date | kWh | Profit | |
|---|---|---|---|
| Exported kWh | 9th June 2023 | 16.70 | |
| Exported profit | 21st June 2023 | 16.40 | £1.87 (11.57p kWh) |
| Profit day | 21st June 2023 | 16.40 | £1.35 |
Solar/Battery Export and Profit
| Date | kWh | Income/Cost | |
|---|---|---|---|
| Best kWh export | 23rd March 2024 | 10.60 | |
| Best export profit | 23rd March 2024 | 10.60 | £1.57 (15p kWh) |
| Cheapest Day | 23rd March 2024 | -£1.11 |
The graphs below is the total generation for March compared to the rest of the year.
2024 generation graph. January to March
Generation
Overview for March
The graph below shows the generation for each day
Graph showing production for the month
The graphs below show the generation split between the front and back panels
Graph showing production for the front facing panels
Graph showing production for the back facing panels
The graphs below show the yearly generation split across both the back and front panels
Front panel generation for January to March 2024
Back panel generation for January to March 2024
Octopus Agile
The costs shown here do include the standing charge. Any comparisons are compared to the unit cost if we were not on Octopus Agile, which is 29.22p per kWh. The standing charge was 0.4211p.
As you can see once again we used less Agile slots to charge the battery overnight than the previous month. No surprise there. Seven of those slots were plunge pricing slots. These are where we get paid to use electricity.
March Grid Information
| Standard Tariff | 29.22p | ||
| Standing Charge | 42.11p | ||
| Cost from the grid | £35.78 (Agile) | £95.20 (Standard) | |
| Savings including export | £76.74 | ||
| Exported | 115.50 kWh | £17.31 @ 15p kWh | |
| Agile slots used | 133 | ||
| Agile plunge slots used | 7 | ||
| Average Agile slot price | 10.97p | ||
| Cheapest slot | -3.96p | ||
| Most expensive slot | 14.049p | ||
| House consumed | 447.70 kWh | ||
| Solar generated 2024/2023 | 290.50 kWh | 261.40 kWh | |
| Percentage generated by solar | 63% | ||
| Solar iBoost used | 1.21 kWh | ||
| Self Sustained Days (More solar than consumed) | 2 | ||
| Self Sustained Days (More solar than we imported) | 14 | ||
Here is the Octopus Watch report summary
Octopus Watch summary
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The best and worst solar power generation days