Johannes Langstrof built on a hillside.

Now he and his family overlook the Hessian town of Butzbach – and see countless columns of smoke rising above the houses in winter.

On the other hand, solar panels glitter on

the 200 square meter roof of his family home, which also houses a large office unit for Langstrof's company .

They cover the entire electricity needs of the family, including e-cars and heat pump heating, even now, when there is very little light.

Carsten Knop

Editor.

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The house has its own power plant for this.

It produces hydrogen with solar energy, can store it and retrieve it as electricity when needed.

Langstrof has a peak output of 30 kilowatts with its solar system on the roof.

The rest of the technology is hidden in moderately large system cabinets, plus the control technology and sophisticated ventilation systems.

You can hear the owner's pride:

"It's a nice feeling to be self-sufficient," says Langstrof.

Down there, in Butzbach, is the old world.

"We want to be a part of tomorrow." We looked at whether that was really a good idea.

The fact that

important transport projects

in Germany take so long is not due to the construction industry, says the President of the Association, Peter Hübner.

In an interview, he answers the question of why the construction of the new Rahmedetal Bridge in Lüdenscheid should take five years, but Italy rebuilt the bridge in Genoa in two years: "

It's not because of the construction industry, but because of the planning and approval procedure

.

I agree with you, if it takes 25 years for a simple bypass to be in place, then that's simply unbearable for the people.

In any case, we can build a motorway bridge in two years.” Yes, let's go, one would like to call out to the politicians.

When the

Federal Audit Office once wanted to know

what was happening in the offices of the former Federal Chancellors Helmut Schmidt, Helmut Kohl and Gerhard Schröder, some of the employees there were very unwilling.

You said

the documents were "private"

and that's why the Federal Court of Auditors had nothing to do with them.

That was a very clumsy answer.

If anything concerns the Federal Audit Office at all, then it is the use of federal funds for "private" interests.

The state does not finance anything private.

Justus Bender from our political editorial team therefore found out more: In another case, the office was no longer managed by the former Federal Chancellor.

Because his health was constantly poor, his wife acted as boss and commanded the officials.

The Federal Court of Auditors keeps to itself which former Federal Chancellor is meant, but the audit took place from 2013 to 2015.

One can guess which former Chancellor was in poor health at the time and had a wife who was still alive.

Thank you for your loyalty to F+, your complete access to FAZ.NET.

If you have a question about F+, please write to me: c.knop@faz.de.

Many greetings,

Yours, Carsten Knop

Publisher


Frankfurter Allgemeine Zeitung