We write about what we actually see in the data. No generic advice — only things you can verify on your own system.
Symptoms and how to read them.
Your solar is producing far more than expected — or far less. Both are usually a bad input
An extreme deviation up or down rarely means a miracle or a disaster. We explain why such a large gap almost always traces back to a mis-entered figure.
Your inverter isn't producing. What to check before calling service
Zero output doesn't always mean a fault — often it's only the app that stopped. Work through six causes in order and learn what service will actually need from you.
Why solar produces so little in winter — and when winter is suspicious anyway
The winter drop is physics, not a fault. How large it normally is, why almost nothing can be concluded from it, and the three things winter does reveal.
Shade on solar panels: how to tell it's costing you output
Shade costs more than the area it covers. How to recognise it from its daily and seasonal signature, how to verify it without climbing on the roof, and what can be done.
Your solar is producing less than expected. Is it a fault?
Lower output rarely means a broken system. Work through four explanations in order of likelihood and find out when calling a technician is actually justified.
Terms and figures we refer to elsewhere.
A lifetime production estimate from a single reading
How a single cumulative counter produces a rough first verdict right after connecting, why it never exceeds a warning, and why it's corrected for panel ageing.
Does a retrofit solar battery pay off? How we compute it
A battery earns on the gap between the buy and feed-in price, not on the full price of electricity. Sizing, hardware vs. installation cost, and when payback doesn't work.
Inverter status codes: recoverable faults, permanent faults and normal operation
A status code isn't the same as an error code. We explain the difference, why codes give the most certain finding we can offer, and what they don't tell you.
How to get a SolaX Cloud API token and connect your system
Step-by-step for the token and the registration number, what the token can and cannot do, its rate limits, and why the inverter serial number is the wrong input.
Self-consumption: why it matters more than how much you produce
The difference between self-consumption and self-sufficiency, how to compute both from your inverter's counters, and what to do about them — cheapest measure first.
How much should your solar system produce?
Where expected output comes from, why estimates differ between sources, and how large a gap from expectation still means nothing at all.
Brands and technologies side by side — only where we have our own sources.