Montag, 11. Juni 2012

ENTSO-E publishes “Summer Outlook and Winter Review”

The review of ENTSO-E assesses the adequacy of the power system for the summer period as well as the potential electricity issues that may occur during the summer period from 6 June until 25 September 2012. It also provides an overview of the main events which occurred during the previous winter period from 7 December until 4 April 2012.

S. Hofschlaeger /
Summer Outlook

The summer outlook analysis, carried out by ENTSO-E shows that Europe has sufficient generation for both normal and severe demand conditions. While various countries may require imports, cross border capacity is sufficient to accommodate them. Under severe weather conditions such as hot waves and high temperatures, demand increases from normal levels, the analysis shows that reliability margins are reduced and some countries such as Germany, Hungary, Finland and Poland will require imports to maintain demand.

For this Summer Outlook report, the analysis has been extended from previous reports to also consider “overnight downward adequacy” in addition to the usual power balance analysis between electricity generation and peak demand. “Overnight downward adequacy” occurs due to low overnight demands, when there is an excess of the minimum generation on the system compared to demand due to high output levels of renewable generation and inflexible generation; this occurs on weekends in particular. During these periods this excess of generation needs to be exported or even curtailed.

The Summer Outlook report 2012 highlights that during certain weeks over the summer, it may be necessary to reduce excess generation in various countries as a result of insufficient cross border export capability.

Winter Review

Although majority of the 2011/12 winter was mild, the Winter Review highlights that due to severe weather conditions during February 2012, the European system experienced a tense situation. During this period, throughout Europe exceptional snow falls and extremely low temperatures were observed. The main risk factors for most countries were related to the sensitivity of load to low temperatures causing stressed situations.

During these cold spells, the safety measures highlighted by the TSOs in the Winter Outlook report 2011/12 were activated, including voltage reductions, and interruptible load curtailments. TSOs in close cooperation with each other managed the difficult situation well through maximising the available network, coordinating generation, and ensuring customers had the greatest opportunity for uninterrupted power supply.

Background Information

As required by Regulation (EC) 714/2009, ENTSO-E is required to publish biannually a Summer Outlook and Winter Review report. The ENTSO-E Summer Outlook reports the outlook of the national and regional power balances between forecast available generation and peak demand on a weekly basis for the upcoming summer period.

Source and further information: ENTSO-E

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