A recently proposed secure communication technique in Refs. [1,2,3] is initially applied to the energy sector. For this, especially the energy sector images which have a secret character for the companies and sectoral institutions have been ciphered and deciphered successfully. The applied tests have proven that the proposed method is fast and secure. The technique, itself, consists of a Kurt-modified Chua’s circuit (KMCC) for the generation of chaotic number sequences. The KMCC is a non-autonomous nonlinear circuit having hyper-chaotic character, thereby two positive Lyapunov exponents can easily make a strong ciphering action. The method is efficient for the images used in energy plants and networks. The algorithm created for the encryption/decryption uses a scrambling feature implemented at the bit level.