There are 15 words that start with 'energi'.
| energid | energids | 
| energies | energise | 
| energize | energised | 
| energises | energized | 
| energizer | energizes | 
| energising | energizers | 
| energizing | energization | 
| energizations | |
Note: These 15 words that start with 'energi' are found from the USA & Canada version of the tournament Scrabble word list.