Heron S.A.


Heron S.A. is a power company in Greece. It is a joint company of GEK Terna and GDF Suez, established on 11 December 2008. It owns and operates Heron I and Heron II natural gas-fired power plants in Viotia, about north of Athens.

Heron I

Heron I is a 147 MW dual-fuel open-cycle gas-turbine plant, which has been in operation since 2004. It was the first private power plant in Greece.
A stand-by diesel generator provides emergency power in case of 20 kV grid power loss. Thus, the power plant is capable of black start operation. The installation also includes:
Heron II is a 435 MW under construction combined cycle gas-fired power plant. It is scheduled to become operational in 2010. The plant includes STAG 109FB GE main equipment in single shaft arrangement using dry low NOx combustion system.