Sharing my personal PV experience

Hi, eco-lovers.

You may know that I am a small 5kW rooftop PV co-investor. However, I've done my part of this more about saving on utility bills and preserving nature than any profits, at least for the foreseeable future.

Let me share some real-life first person experience with you.

The last few days were hot, 100% sunny with no clouds on the sky at all.

Our PV panels are static and fixed on the roof, not the ideal angle and the direction is South-Southeast.

So after observing carefully the production for more than ten months, I could say that the maximal (peak) output is somewhere in the range of 3.5 - 3.8 kW.

It seems far away from the passport 5kW.

That's between 70% - 76%.

Still, during the sunny days, more than 2/3 of our consumption is covered by the PV system.

Here are the three screenshots from the PV monitoring and management app I use:

 

With the current price of electricity we buy from the grid, a house battery is still not economically justified as the recommendation is for 10kWh battery that costs more than EUR 6k including the installation and setup fees. Its working frame is expected to be about ten years.

Hopefully the increased Research & Development in that area will make batteries smaller and cheaper, thus more affordable. But even if that doesn't happen, the increasing prices of electricity should make a battery investment meaningful.

See you soon!