Knowledge
Guides without the sales pitch: how energy optimization really works, including the cases where it doesn't pay off.
How Franzl decides
What is a stored kilowatt-hour worth? A look inside the optimizer — with a real night where the "wrong" decision was the cheapest one.
Read →Measuring solar surplus correctly
Why "what flows into the grid" is the wrong number, and how to calculate the real, distributable surplus.
Read →Dynamic electricity tariffs in Austria & Germany
What spot-market electricity really delivers, who it pays off for, and, honestly, who it doesn't.
Read →Coupling a heat pump with solar
SG-Ready, relay, or direct control? The three approaches compared, with their limits.
Read →New articles are added regularly. Got a topic request? Write to us.