| Social system | Emergence | Φm | Φm | Φm |
| (ya) | (erg/s/g) | (kW/person) | (kcal/day/person) | |
| Technologists in developed countries | 0 | ~2 × 106 | 12.5 | 265,000 |
| Modern citizens, on average | 0 | ~5 × 105 | 2.6 | 55,000 |
| Industrialists | ~200 | ~3 × 105 | 1.6 | 35,000 |
| Agriculturists | ~104 | ~105 | 0.6 | 12,000 |
| Hunter-gatherers | ~3 × 105 | ~4 × 104 | 0.2 | 4000 |
| Australopithecines | ~3 × 106 | ~2 × 104 | 0.1 | 2000 |