| Term | Description |
|---|
| Heat Rate | A measure of electric energy system efficiency; the amount of natural gas required to generate one MegaWatt-hour of electric energy |
| Hedging | The practice of speculating on the price for a future commodity to avoid exposure to the risk of unacceptably large variations in real time price movements. There is usually a price to be paid for purchasing a future commodity at a negotiated / market price; the price charged for the commodity commonly includes an extra charge to protect the seller against the risk of losing money through selling a commodity that he may have to purchase in the future at a price that is possibly higher than the price at which he contracts to provide it for. |
| Hertz (Hz) | The unit of frequency for alternating current. Formerly called cycles per second. The standard frequency for power supply in North America is 60 Hz. |
| Hierarchical Tree | All Report windows display a hierarchical tree on the left. The tree is dynamically built based on your companys data. The tree can be expanded and collapsed by clicking on the plus or minus signs. The hierarchical tree is where you choose what data or nodes you want to include in the report. You choose a node by clicking in the box beside it. Selection of a higher-level node will select all the nodes underneath it. |
| Horse Power | Unit of power equal to 746 Watts. |
| Hour ending (HE) | Hour Ending or "HE" means the 60 minute period ending that hour. For example, HE 24 includes the time between 23:00 and 24:00. |
Glossary