Seen this exact thing happening here over the past 18 months. Standing charges are the silent killer — Octopus have crept mine up twice now without much fanfare, and that's before a single watt gets pulled from the grid.
My setup covers most of what I need across the garden office and static caravan, with a 10kWh Fogstar Drift battery bank and around 2.4kW of panels. Some months I'm genuinely exporting more than I import, yet the bill still stings because of those fixed daily charges stacking up.
The maddening part is that standing charges theoretically cover grid maintenance costs — fair enough in principle — but the rate of increase feels completely detached from actual usage patterns for people who've invested heavily in generation and storage.
A few things worth checking if others are in a similar position:
- Smart meter data — export vs import split, not just net consumption
- Tariff switching — Agile or similar time-of-use tariffs can genuinely help if you've got storage to shift loads
- DNO export agreements — if you're regularly exporting significant amounts, SEG payments can offset standing charges partially
My Victron MPPT and Cerbo GX give me granular data on everything, which at least means I know exactly what's happening. Knowledge doesn't reduce the bill, but it helps you argue the case when switching tariffs.
Curious whether anyone has done the maths on going fully off-grid just to escape standing charges entirely. For EV charging particularly, the numbers are starting to look more interesting than they did two years ago.