July 2025 updates
July Electric:
I managed to maintain a 9.01% Peak/Off-Peak ratio, which down on last month’s 4.88%.
There were a quite a few days that were overcast, and on the rest I managed to have only minimal peak usage.
Electricity costs for the month of July: £120.07 for 2025, £110.63 for 2024 and £449.94 for 2023 – not quite as good as last year, but still way better than the year before.
Electricity demand for the month of July: 1884kWh for 2025, 1821kWh for 2024 and 1376kWh for 2023.
The additional cost for this year was around £10.00 more for an additional 60kWH of usage spread across 9 days
The off-peak/peak/SC values for July were £0.07/0.24393/0.488 for 2024 vs £0.07/£0.2896/0.4542 for 2025, but both have changed from last month.
This can also be seen in the month on month usage vs cost graphs:
July Solar:
Actual production for July far exceeded the forecast for every day, often by way more than double.
The various arrays produced the following levels of energy: Garage 346.94 kWh, Office 263.48kWh, East 256.87kWh, West 310.87kWh for a total of 1182.28kWh which is again my best month to date, beating last month by 29.90kWh.
A very good month for solar production, I also managed to export 501.72kWh for a total saving of £75.26.
The import costs of £120.07 less the export savings of £85.47 means my net cost for June was £34.59 for 1884kWh of demand making my average rate £0.0174/kWh.
July Gas:
Gas costs for the month of July: £29.04 for 2025, £22.59 for 2024 and £-181.58 for 2023 (strange refund situation).
Gas usage for the month of July: 424kWh for 2025, 314kWh for 2024 and -2915kWh for 2023 (again weird numbers).
£6.00 more than last year, 31% more gas consumed and on the Octopus Gas Tracker tariff vs the Octopus Standard Gas Tariff, so similar to last month.
Gas prices have started to fall again this month, I would have paid a lot more had I still been on the Octopus Standard Tariff, which was £0.0699 per kWh for July £39.82 ((424 * 0.0699) + 10.18sc) or an additional £10.77 for the month.
The heating was off for the entire month, so gas was only used for heating the hot water.
Again all visible in the usage vs cost graphs.
There was also a sever session on 01/07 that Home Assistant automatically signed me up for
It was offering 112 Octopionts per kWh, I did not save any electricity, so did not earn any points
I did however win 800 Octopoints on the Wheel of Fortune which is worth £1.00
There was also a ‘free electricity’ session on 05/07., however, since this only applied to car charging, I didn’t bother to join in