We recently had a 7000w solar system installed and since it became live our power consumption from the grid went up. We draw 45 kw/hr per day and have no idea where this comes from. The electricians at my local work (UAE) say it might be a faulty switch when the batteries/system drain power. We cannot send surplus power into the grid yet.
We have a Multiplus-II 48/10000/140-100 with a MPPT RS450/100-Tr and Cerbo coupled to 2 x Pylontech US5000 48v.
Currently the system is set up to provide power during power cuts (Kyiv, Ukraine so cuts are frequent) and nobody is living in the house.
We are in touch with the company who installed the system, however we would like to know what you guys think. Faulty meter???
Have you got ESS set up? Even set to zero injection, some power will be backfed. Some suppliers eg in Spain will bill you for injected power. But your installer would know this.
Where is that 45 kWh/day number coming from? Did you read that on the utility meter, or in the GX/VRM? (That would clarify whether you have a real consumption or “just” a display error in the victron system)
Is this is a private house? If so, check the following loads:
boiler settings might be changed make you heat water all the time
The water pump may be in a faulty state - continuously pump the water to the house (might be the leakage underground)
Just try to analyze the energy consumption using VRM