Extraordinary conditions resulting from coinciding temporary closures of various power facilities, both in Greece and abroad, have pushed up the System Marginal Price, or wholesale electricity, to levels of as much as 105 euros per MWh, as was the case yesterday.
Four domestic gas-fired power stations – Enthes (Elpedison), Heron CC, Lavrio IV and Protergia – were out of order yesterday, for different reasons.
Problems beyond the Greek border have made matters worse. Bulgaria’s 1,000-MW Kozloduy nuclear power plant is currently out of order. The Greek-Bulgarian line serves as a transit route towards North Macedonia as a line linking Bulgaria and North Macedonia is out of order. So, too, is a line linking Greece with Italy.
Power stations that rarely operate, such as an open-cycle Heron unit, needed to be called into action as a result of the problems on these various fronts. Their necessary contributions pushed the SMP to far higher levels.
Three power utility PPC lignite-fired power stations, Agios Dimitrios II and III and Melitis, along with PPC’s gas-fired power stations Aliveri V, Lavrio V, Komotini, Megalopoli V, as well as units run by the independent energy firms Heron, Thisvi and Corinth Power, all needed to be called into action to cover the grid’s needs.
The market appears to have normalized for today. SMP levels are down to relatively satisfactory levels, averaging 44.49 euros per MWh, primarily as a result of significant RES contributions, covering more than 50 percent of the overall demand, 123.993 GWh.
The lignite-fired power stations used yesterday – Agios Dimitrios II and III and Melitis – will remain closed today.