Do I have to move to Solar-Log WEB Enerest™ 4?

No.
If you do not agree to a move from Solar-Log WEB Enerest™ 3 to Solar-Log WEB Enerest™ 4, please inform us by mail or contact form. We will then inform you when the portal contract concluded with us via the Solar-Log WEB Enerest™ 3, within the regular billing period, ends.