DESS dynamic prices loading delay / failing to fetch prices (Czech region)

Been having a similar head-scratcher with my Victron DESS setup here, though I'm in the UK rather than Czech Republic — so interesting to see this isn't purely a regional quirk.

Over the past week or so I've noticed the day-ahead Agile pricing data (pulling from Octopus via the DESS integration) is loading noticeably late — sometimes 45–60 minutes behind schedule, occasionally failing to fetch entirely until I manually trigger a refresh through the VRM portal. When you're trying to optimise overnight charging for the shepherd's hut and keep enough reserve for EV top-ups the following morning, a timing delay like that genuinely cascades into poor scheduling decisions.

A few things I've checked so far:

• VRM portal connectivity — solid, no dropouts on my end
• Cerbo GX firmware — on the latest stable build
• API call logs — seeing occasional timeout errors that resolve themselves, which suggests something upstream rather than my local kit

My suspicion is it's a backend pricing-data aggregation issue on Victron's side rather than anything network-local — possibly the same root cause affecting multiple regions including Czech. The DESS pricing engine presumably pulls from various day-ahead market APIs, and if one aggregation layer hiccups, everyone downstream suffers regardless of country.

Has anyone else in the UK on Octopus Agile + DESS seen this recently? And does anyone know whether Victron publish any kind of status page for DESS backend services? I've not found one — their support comms around this seem quite opaque compared to, say, how Fogstar handles firmware issues.

Would be good to pool data points across regions to work out if this is genuinely widespread.

@HelenPhillips — been watching this thread with interest as I'm also in the UK and had something similar crop up with my cabin setup last month.

Worth checking whether the delay correlates with specific times of day — mine seemed to struggle most in the early morning when I suspect Victron's servers are pulling overnight price data. Took noticeably longer to populate.

Also, is your DESS pulling from Octopus or another tariff? I'm curious whether the pricing API endpoint matters here — some tariffs seem to handshake more cleanly than others within the Victron ecosystem.

Have you tried forcing a manual refresh via the VRM portal rather than waiting for the scheduled fetch? That temporarily resolved mine, though it kept recurring until a firmware update seemed to quietly fix it.

What firmware version are you currently on?

@HelenPhillips honestly DESS fetching dynamic prices sometimes feels like asking my nan to load a webpage on her 2009 laptop — you can see it trying, bless it 😄

Worth checking a few things though:

• Is your Venus OS up to date? Older versions had some right strops with price feed timeouts

Interesting thread — has anyone narrowed down whether this is a Venus OS firmware version dependency? I had a fetch delay issue on my garden office setup and found rolling back from a beta firmware sorted it temporarily.

Worth checking:

• Is the dynamic_electricity_pricing service actually running in the Venus OS console?
• Any DNS resolution failures logged? My unit was silently timing out on the Victron server endpoint
• Which aggregator are you pulling from — Octopus Agile data seems to behave differently to other tariff feeds in my experience

@HelenPhillips — are you seeing complete failures or just stale prices being held for extended periods? That distinction might help isolate whether it's a fetch trigger problem or a parsing issue on whatever comes back.

Curious whether this correlates with specific times of day too, or if it's genuinely random.

@MuddySkipper good shout on the Venus OS angle — I'd check that first tbh. Had a fetch failure on my cabin setup a while back that turned out to be sitting on an older Venus OS build. Updated and it sorted itself within a day or two.

Worth checking your VRM portal logs as well — sometimes the error's more specific than the dashboard suggests.

@HelenPhillips not sure if you're using a Cerbo GX or something older? In my experience the Cerbo handles the DESS price syncing more reliably than earlier kit. Might be worth ruling out the hardware side before digging too deep into regional/firmware rabbit holes.

@MuddySkipper worth checking your Venus OS version but also — have you looked at whether the DESS server endpoint itself is timing out? I had fetch failures on my shepherd's hut setup last winter and it turned out to be nothing clever, just the remote console showing a cached error from hours earlier.

Checked the VRM portal and prices were actually loading fine in the background. Bit embarrassing how long I spent poking at firmware before I noticed that.

Also — if you're on Victron kit, the VRM diagnostic logs are your friend here. Grab those before assuming it's a Venus OS issue.