EFFECT OF and ENERGY OF can be interchanged….
If you read closely…. in most of the above cases….EFFECT OF is used when there is an activity…..and ENERGY is used for things….
You can still choose as per your inner guidance.
Experiment using different words with VK…..i have done some fun exercises with VK using different english words…and felt some differences…I felt VK is also an English/Language Expert while mimicking and follows language of my heart otherwise