| Business | Phone |
| Alternate Energy Technologies 1057 Ellis Rd N, Jacksonville 32254 | (904) 781-8305 |
| Thermal Conversion Technology 101 Copeland St, Jacksonville 32204 | (904) 358-3720 |
| Energy Laboratories Inc 5191a Shawland Rd, Jacksonville 32254 | (904) 786-6600 |
| Micropower Corp 4170 Churchwell Rd, Jacksonville 32210 | (904) 384-6503 |