ENTSOG Southern Corridor (SC) Gas Regional Investment Plan (GRIP) 2014-2023 / Main Report

Indeed, a sustainable and reliable growth of green electricity sources is heavily dependent on the back-up solutions put in place to substitute the renewable electricity streams when wind is not blowing or sun not shining. As natural gas is the fossil fuel having the least impact in terms of CO ² emission, CCGTs represent the most appropriate solution to fulfil RES back-up function without running the risk to waste the environmental gain provided by green energy sources. The situation in several selected countries is presented below.

3.5.1 GREECE RENEWABLES

In Greece the renewables have an important share in power generation, about 14.1% (2012), with hydropower being the most important. The share of renewables in power generation is expected to reach 29.6% by 2023 and, according to the forecast, wind and solar will contribute most to this increase. The difference between the historical value in 2012 and the forecasted value in

70,000 GWh/y

16,000 14,000 12,000 10,000 6,000 8,000 18,000 GWh/y

60,000

50,000

40,000

30,000

20,000

2,000 4,000

10,000

0

0

2009

2011

2013

2015

2017

2021 2023

2009

2011

2013

2015

2017

2021 2023

2019

2019

Wind

Biomass & Waste

Solar+Wind +Biomass

Solar Hydro

Wind

Biomass & Waste

Solar+Wind +Biomass

Solar

Hydro

Oil

Coal & Lignite

Natural gas

Figure 3.13: Power generation of Greece by source (historical and forecast)

Figure 3.14: Forecast of power generation in Greece from Renewable Energy sources from 2009 to 2012

2023 is 9,093GWh which is more than 240%. If we compare this increase with the difference between the historical and forecasted power generation figures for Greece (Figure 3.13) it results that the renewables can provide the additional power gener- ation demand for the next 10 years.

Southern Corridor GRIP 2014–2023 |

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