September Solar Generation and Export Numbers
Here is the overview for September 2023. On the 26th we had a third Greenlinx 3x 3.2 kWh battery added. This takes us to 9.6 kWh. In the future this means we could do some force discharging to the grid and export more. On the 25th, we also changed to the Octopus Fixed Export tariff which is 15p per kWh. This month also had quite a few plunge pricing slots. The price was either zero or we were paid for using electricity from the grid.
The worst generation day was the 27th with only 6.3 kWh. The best was the 4th when 22.1 kWh was generated.
The best export day was the 4th with 8.3 kWh.
The graph below is the total generation for September compared to the rest of the year. Some of the battery came from the Octopus Agile overnight charging. More on that at the bottom of this post
2023 generation graph. January to September
Generation
Overview for September
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
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 30.09p per kWh. This is the new unit cost after the price cap took affect.
For the month of September the average unit cost Octopus Agile Import was 12.35p. The average unit cost Octopus Agile Export was 10.78p.
Our best export day by cost was the 25th with £1.03. This was the first day on the 15p Octopus Fixed Export tariff.
Our electricity cost from the grid for September was £23.75 compared to £70.87 on the standard tariff, this is a saving of £57.32 comparing Agile to the standard tariff once the export is also added.
The solar generated £127.09 using the standard until rate of 30.09p per kWh.
In total we exported 411.1 kWh and made £10.20.
This month we used 58 half hour slots, 19 of those slots were plunge pricing slots. The average cost of the overnight slots used was 9p per kWh. The cheapest slot was -7.276p per kWh the most expensive slot was 20.07p per kWh.
The percentage of our electricity generated by the solar panels for September was 86%. This is the first time it has been less than 100% since I started to record the data. We generated 411.3 kWh compared to the house consumption of 481 kWh. Some of that house consumption includes the Solar iBoost. That used 1.97 kWh of the solar we produced.
The best profit day was 25th. We made 68p. Import cost was 35p, the export was £1.03
Here is the Octopus Watch report summary
Octopus Watch summary
Featured posts
The best and worst solar power generation days