| AASB |
Australian Accounting Standards Board |
 |
| AEMO |
Australian Energy Market Operator |
|
| ASX |
Australian Stock Exchange |
|
| BFFS |
Basslink Facility Fee Swap |
|
| BSA |
Basslink Services Agreement |
|
| CEO |
Chief Executive Officer |
|
| CGU |
Cash generating unit |
|
| CO2 |
Carbon dioxide |
|
| CO2 - e |
Carbon dioxide equivalent |
|
| CPRS |
Carbon Pollution Reduction Scheme |
|
| CSO |
Community Service Obligation |
|
| EEO |
Equal employment opportunity |
|
| EPA |
Enterprise Partnership Agreement |
|
| ESMS |
Environment and Sustainability Management System |
|
| FCAS |
Frequency control ancillary services |
|
| FFFI |
Floating Facility Fee Instrument |
|
| FTE |
Full-time equivalent |
|
| GBE |
Government Business Enterprise |
|
| GRI |
Global Reporting Index |
|
| GST |
Goods and Services Tax |
|
| IBRM |
Integrated Business Risk Management |
|
| IHA |
International Hydropower Association |
|
| IP |
Intellectual property |
|
| KPI |
Key performance indicator |
|
| MRET |
Mandatory Renewable Energy Target |
|
| NEM |
National Electricity Market |
|
| NGAC |
New South Wales Greenhouse Gas Abatement Certificates |
|
| NSP |
Network service provider |
|
| OER |
Office of the Economic Regulator |
|
| OH&S |
Occupational health and safety |
|
| PCB |
Polychlorinated biphenyls |
|
| RBF |
Retirement Benefits Fund |
|
| R&D |
Research and development |
|
| REC |
Renewable Energy Certificate |
|
| RET |
Renewable Energy Target |
|
| SCADA |
Supervisory control and data acquisition |
|
| SME |
Small and medium enterprises |
|
| Tascorp |
Tasmanian Public Finance Corporation |
|
Additional measures
| kW - kilowatt |
One kW = 1000 watts. A watt is the rate at which electrical energy is produced or used. |
| MW - megawatt |
One MW = 1000 kilowatts or one million watts. |
| kWh - kilowatt hour |
The standard unit of energy, equivalent to production or consumption at the rate of one kilowatt for one hour. |
| MWh - megawatt hour |
One MWh = 1000 kiilowatt hours. |
| GWh - gigawatt hour |
One GWh = 1 million kilowatt hours, or 1000 megawatt hours. |
| kV - kilovolt |
One kV – 1000 volts. A volt is the unit of potential or electrical pressure. |
| km – kilometre |
|
| m3 – cubic metre |
|
| $m - million |
|
Measuring water storage levels
Hydro Tasmania’s hydropower system is fully integrated and flexible in terms of producing energy. We measure the water storage system in terms of the amount of electricity we could generate from the water stored, or put another way, the amount of energy in storage. We narrate the storage level as ‘x% full in energy terms’ or ‘% full of energy’. Usually this applies to the system as a whole, but sometimes we refer to the level of particular lakes.
The figure is relative to, but is not the same as, the actual level of water in the storage. Our preferred operating zone is a storage system level between 30 and 50 per cent full in energy. The lower amount, 30 per cent, represents an insurance amount that can be used to generate electricity during some years of drought.
The higher level, 50 per cent, represents a reasonable buffer that can be used to give us flexibility in our trading operations.
Generally, when identifying the level of individual lakes, these figures mean that significantly less than 30 per cent full of energy means the lake will look low, and at 50 per cent full of energy, the lake is likely to be nearer full.
We publish water storage data on our web site under ‘energy in storage’, and ‘lake levels’ which are reported as metres from full.
|
