There were a number of Saver Sessions during the month of March, but more on those later.
March Electric:
I managed to maintain a 24% Peak/Off-Peak ratio, which is an improvement on last month’s 39%.
Electricity costs for the month of March: £135.10 for 2025, £438.81 for 2024 and £676.87 for 2023 – some great on-going savings.
Electricity demand for the month of March: 1715kWh for 2025, 1759kWh for 2024 and 1798kWh for 2023.
The additional savings for this year are almost entirely down to the Solar and Battery as I was on the same tariff last March as I am now, I used about the same amount of electricity, yet it cost me about 70% less.
The peak/off peak/SC values for March were £0.075/0.310/0.420 for 2024 vs £0.07/£0.271/0.488 for 2025, so not a huge difference.
This can also be seen in the month on month usage vs cost graphs
March Solar:
Actual production for March far exceeded the forecast for every day, often by way more than double.
The various arrays produced the following levels of energy: Garage 236.97 kWh, Office 294.59kWh, East 127.46kWh, West 154.78kWh for a total of 713.79kWh which was only exceeded last year by July and August
A very good month for solar production, I also managed to export 83.89kWh for a total saving of £12.58
March Gas:
Gas costs for the month of March: £100.80 for 2025, £86.54 for 2024 and £363.48 for 2023.
Gas usage for the month of March: 1,677kWh for 2025, 1849kWh for 2024 and 3615kWh for 2023.
£20.00 more than last year, less gas consumed and on the Octopus Gas Tracker tariff vs the Octopus Standard Gas Tariff.
Gas prices have been steadily rising over the past year, I would have paid a lot more had I still been on the Octopus Standard Tariff, which was £0.0603 per kWh for March £116.24 ((1,677 * 0.0603) + 15.124) or an additional £16.00 for the month.
I turned the heating off on the 6th, but ended up turning it back on on the 12th before turning it off for good on the 19th, I actually turned the heating off later last year.
Again all visible in the usage vs cost graphs
Some of this may be down to the average daily temperature differences, 2024 on the left, 2025 on the right, this March being a fair bit colder than last year.
I will continue to compare to my old 2023 E-ON Prices for ongoing savings which for this month amount to £295.19.
There were five Saver Sessions this month, 03/03, 04/03, 05/03, 12/03 and 19/03, my Home Assistant automation signed me up to all of them automatically
I received notification about all of these sessions via emails sent round midday of the day in question.
The first one was between 18:00 and 19:00 of the 3rd March, offering 104 Octopoints (13p) per kWh saved.
The second one was between 18:00 and 19:00 of the 4th March, offering 104 Octopoints (13p) per kWh saved.
The third one was between 18:00 and 19:00 of the 5th March, offering 104 Octopoints (13p) per kWh saved.
The fourth one was between 18:00 and 19:00 of the 12th March, offering 104 Octopoints (13p) per kWh saved.
The fifth one was between 18:00 and 19:00 of the 19th March, offering 104 Octopoints (13p) per kWh saved.
Since these were all offering less than my export guarantee and way less than the peak rate, I made no effort to charge the batteries beforehand, or discharge them during the sessions
As a result my savings were somewhat low.
I saved 2.15kWh on the 3rd, which netted me 224 Octopints (£0.28).
I saved 2.15kWh on the 4th, which netted me 224 Octopints (£0.28).
I saved 2.15kWh on the 5th, which netted me 224 Octopints (£0.28).
I saved 1.62kWh on the 12th, which netted me 168 Octopints (£0.21).
I saved 1.31kWh on the 19th, which netted me 136 Octopints (£0.17).
The savings were really not worth bothering with, beyond earning a free hour of electricity.
There was an additional ‘Earth Hour’ saving session on 22nd March between 20:30 and 21:30, although this had no incentive whatsoever beyond the ability to donate some of your points to the World Wildlife Fund (WWF).