ENTSOG GRIP South - Main Report

0.8 %

France

Demand behaviour isn’t homogeneous across each of theSouthRegion composite countries. Each country’s profile is shownbelow inFigure3.8 as a ratiobetween daily demand and total annual demand so that they canbe compared on the same scale. As can be seen, demand in France has a higher vari- ationona seasonal basis than inPortugal and inSpain which ismainlydue to thehigher shareof the residen- tial and commercial sector (which represents roughly half of the yearly demand in France), stressed by a more colder climate. On the other hand, the weekly modulation is higher in Spain and Portugal, which is mainlydue toSpainandPortugal bothusinggasmore for power generation and industry (for example, in 2011, 76% of conventional sector was mainly for the industrial sector). The gas demand for power generation in 2012 is shown in Figure 3.9. It shows how the demand for power generation fluctuates a lot lesswith the seasons compared to the conventional demand. It also shows thehuge range found in thedemand values explained by the role played by gas for power generation in providing flexibility for the electrical system demand modulation, inparticular todeal with the intermittency of some renewable power generation (mainly for wind and solar sources). In the South Region the combined cycle gas turbines (CCGTs) are playing an important role as a support in the development of renewable energy production. In- termittency and unpredictability of renewable energy sources like wind require a flexible back-up. CCGTs canprovideefficient flexibilityand thereforemakes the CCGT an enabler to introduce the development of renewable energies.

0.6

0.4

0.2

0.0

Jan Feb Mar Apr May Jun Jul

Aug Sep Oct Nov Dec

0.8 %

Portugal

0.6

0.4

0.2

0.0

Jan Feb Mar Apr May Jun Jul

Aug Sep Oct Nov Dec

0.8 %

Spain

0.6

0.4

0.2

0.0

Jan Feb Mar Apr May Jun Jul

Aug Sep Oct Nov Dec

Power generation

Conventional demand

Figure 3.8: Modulation by country – ratio day /year in 2012

0.8 0.7 0.6 TWh/d

0.8 0.7 0.6 TWh/d

0 0.3 0.2 0.1 0.4 0.5

0.0 0.3 0.2 0.1 0.4 0.5

Jan Feb Mar Apr May Jun Jul

Aug Sep Oct Nov Dec

Jan Feb Mar Apr May Jun Jul

Aug Sep Oct Nov Dec

Average

Range (Demand)

Daily Demand

Figure 3.9: Gas demand for power generation in 2012 in the South Region

ENTSOG–GRIPSouth 2013–2022 |

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