Kakhovka HPP could not have been destroyed by an outside attack
Ukrhydroproject explained why the Russians' version of the dam's explosion is not true:
Kakhovka HPP was designed and built to withstand a nuclear strike from outside.
Most likely, the dam itself and the hydroelectric power plant building, where the hydroelectric power generating units are installed, were mined from the inside.
The fact that it was the hydroelectric power plant building that was blown up indicates that the Russians wanted to destroy the entire hydroelectric power plant as a power facility.
It is possible to rebuild the hydroelectric power plant. This issue will be addressed after the de-occupation of the territories.