Glossary

The nominal maximum power output from a wind turbine. Sometimes referred to as capacity. The wind turbine is limited to this power output, which typically applies when the wind speed at the hub height exceeds about 12m/s and continues until about 25-30m/s when the wind turbine stops generating to avoid…

The transfer of electricity at high voltage from the power stations across the country through wires on pylons to points where it can be distributed to users.

Technology which allows the transfer and storage of thermal energy

Quantity of heat produced in relation to fuel input.

A procurement mechanism by which renewable energy supply or capacity is competitively solicited from sellers, who offer bids at the lowest price that they would be willing to accept. Bids may be evaluated on both price and non-price factors.

Syngas, or synthesis gas, is a fuel gas mixture consisting primarily of hydrogen, carbon monoxide, and very often some carbon dioxide. The name comes from its use as intermediates in creating synthetic natural gas and for producing ammonia or methanol. Syngas is frequently a product of coal gasification and the…

A form of analysis used to compare gas prices with electricity prices, by converting the gas price into a price per MWh and subtracting it from the electricity price in that period, taking into account power station efficiency. A negative spark spread indicates that it is more beneficial to sell…

An inverter with robust software capable of rapid, bidirectional communications, which utilities can control remotely to help with issues such as voltage and frequency fluctuations in order to stabilise the grid during disruptive events.

Advanced information and control technology required for improved systems integration and resource optimisation on the grid.