It has been almost a week since Matthias Runne abandoned us and our solar kit installation after we gave him the final payment.

Continuing the project myself , I have started switching the house from mains electricity to the inverter only to find it too is not up to the task.

After (supposedly) 100s of hours of research and phone calls , Matthias Runne’s recommendation of a 3000w inverter is totally inadequate.

Strange that a ‘German Quality’ Solar Installer doing a proper site survey should have made such a fundamental error.

In 2015 I measured the electrical power usage of most of the equipment in our house and gave him these details during the site survey.

For example , our washing machine uses 2500w peak and our microwave uses 1150w.

Both of these devices cause the 3000w inverter to reset and are unusable.

In his incompetence he has also chosen a high frequency inverter where a low frequency one would suit our equipment better.

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