The English word energy is said in Latin as the word vis. In Italian it is said as energia and in German it is said as energie.
"Atomic power" is an English equivalent of the German word Atomkraft. The feminine singular noun translates literally as "atomic energy" or "atomic strength" and sometimes as "nuclear power." The pronunciation will be "a-TOM-kraft" in Hanoverian German.
The suffix for thermal energy is "ies" as in "energies". The word "thermal" is derived from German. Thus the suffix for thermal is "en" as in "thermalen".
Chre is not a German word
"mit" is the German word for "with".
The word FROM in German is von
The word for is in German - " ist "
The German word for he is er.
The German word for their is "Ihre."
The German word for when is wenn.
The German word for "Who" is "Wer".
German is not a compound word.