| Units: | GJ/GJ (Metric), MMBtu/MMBtu (U.S. Imperial) |
| Mode: | Input Only |
| Multi-band: | True |
| Default Value: | 1 |
| Validation Rule: | ≥0 |
| Key Property: | No |
| Description: | First-order polynomial term in unit fuel use function (marginal heat rate) |
The derivative of the heat plant's heat function - see Heat Rate Functions.