ENTSOG GRIP BEMIP 2014-2023 / Main Report

INČUKALNS UNDERGROUND GAS STORAGE

Total volume of Inčukalns UGS is 4.4bcm, including working gas volume of 2.3bcm.

25,000 GWh

22,500

13,465.4 4,802.4 3,726.0 176.0

11,757.6 2,608.2 1,687.1 258.8

11,529.9 5,299.2 2,121.8 1,397.3

20,000

10,681.2 4,471.2 3,995.1 62,1

11,781.7 5,173.3 6,650.9

10,401.8 4,398.8 3,053.3 11,623.1 5,630.4 4,709.3

9,439.2 4,988.7 3,322.4 51.8

17,500

11,509.2 4,253.9 5,175.0

11,136.6 4,864.5 4,409.1

10,132.7 4,843.8 3,850.2

15,000

9,905.0 4,129.7 1,138.5

10,287.9 3,922.7 4,005.5

8.911.4 3,011.9 5,640.8

12,500

10,000

7,500

5,000

2,500

0

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013

Latvia

Estonia

Russia

Lithuania

Figure 2.14: Natural gas supply from Inčukalns UGS per country, 2000 – 2013

Inčukalns UGS started its operation already in 1968, and therefore overall modernization was needed in order to meet modern gas storage standards. Before works were started, few technical studies had been carried out with the aim to decide on necessary modernization and replacement measures. For example, German company UGS Mittenwalde GmbH performed Inčukalns UGS safety analy- sis, and few technical studies had been performed by “Gazpromenergodiagnistica”. Based on these studies, a program of necessary measures for modernization and increase of safety was worked out and gradually is successfully implemented. In the time period from 1997 to 2013, AS Latvijas Gāze has invested 114.5million EUR in modernization of Inčukalns UGS. In the framework of European Energy Programme for Recovery (EEPR) moderni­ zation of 17 wells in Inčukalns UGS was carried out. In 2011 scientific institute VNIIGAZ completed extensive investigation of conditions of the equipment at Inčukalns UGS site and based on the results prepared the Concept of mod- ernization of technological equipment and improvement of operational safety at Inčukalns UGS. The project of modernization and expansion of Inčukalns UGS is included in the list of PCIs (total estimated costs – 376.5million EUR). The objective of the project is: \\ technical upgrade and increase of gas withdrawal capacity up to 35mcm per day; \\ increase of volume of working gas from 2,300mcm to 2,835mcm.

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Baltic Energy Market Interconnection Plan GRIP 2014–2023