The evaporation engine can function well on industrial waste heat, particularly the exhaust gas of open-cycle gas turbines.

The station has two open-cycle gas turbines that together can generate a total of 320 MW of electricity.

Kallpa is a 168MW open-cycle gas turbine plant located in Chilca, south of Lima, designed to burn domestic natural gas from the Camisea field.

If the inlet air is sourced from an open-cycle gas turbine exhaust at around 500 C, Barton has shown that the evaporation engine can provide about a 20% boost to the power output of the gas turbine.

Group 5 has six open-cycle gas turbine projects in these regions, and also expects to be involved in energy projects with South Africa's state power utility Eskom [ESCJ.UL], Upton said.

The black-start capability was facilitated by the presence of three open-cycle gas turbines (OCGTs), each capable of generating 35 MW, which was sufficient to operate the station auxiliary equipment and allow a main unit to be started.

This included the cost of refurbishing three mothballed plants to add 3,677 megawatts to be grid by 2011, smaller open-cycle gas turbines and the construction of two coal-fired power stations - Medupi and Bravo - that would add 4,500 MW each.

It is typical of power stations from the CEGB era to have a number of open-cycle gas turbines (i.e. no heat recovery modules attached) that can run the entirety of the plant necessary to operating a full generating unit; these would normally be started by diesel generators, fed in turn by battery backups.