| Factor | Briquettes | Wood | Coal | Furnace oil |
|---|---|---|---|---|
| Calorific Value | 3800-4800 Kcal/Kg | 2500-3000 Kcal/Kg | 4800-5500 Kcal/Kg | 9800 - 10100 Kcal/kg |
| Ash Content (%) | 2-15 | 20-25 | 20-40 | 0.1 |
| Moisture (%) | 8-10 | 25-35 | 10-20 | 0.5 |
| Smoke/Pollution | No Smoke | High Smoke | Hazardous gas | Hazardous gas |
| Boiler Efficiency(%) | 75 | 60 | 75 | 80 - 85 |
| Effect on Boiler | Normal fly ash deposit in tubes | Regular maintenance | High wear and tear | Regular maintenance |
| Man Power | Single person | Max number | Min two persons | Single person |
| Handling | Easy | Tough | Difficult | Tough |
| Cost (Rs/Kg) | 4-6 | 3-4 | 7-9 | 50-55 |
| Value to the spent | Optimum value | Moderate value | Least value | High value |