ENTSOG GRIP BEMIP 2014-2023 / Main Report

INFRASTRUCTURE

Entry and exit point Värska GMS (RU – EE) Narva EP (RU – EE) Karksi GMS (LV – EE)

Max supply mcm / day

The Estonian natural gas system is interconnected with transmission networks locat- ed in Latvia and Russia. In the period from May to October the gas system is main- ly supplied with gas directly from Russia. From November to April gas is basically supplied from the Inčukalns UGS through the Karksi Gas Metering Station or from Russia through the GMS Värska. In particular cases the gas is supplied from Russia through the IP Narva. The total length of natural gas transmission pipelines is 885 km. Natural gas is supplied to all larger urban areas of Estonia.

4

3

7

Table 2.3: Capacities of gas entry points for Estonia

DESCRIPTION OF THE GAS TRANSMISSION SYSTEM IN ESTONIA

Year of putting into operation Length (km)

Conventional diameter (mm)

Operating pressure (bar)

Gas pipeline

Age (years)

Vireši – Tallinn

1991 / 92

202.4

700

50

20

Vandra – Pärnu

2005 / 06

50.2

250

50

6

Tallinn – Kohtla – Järve I

1951 / 53

97.5

200

30

59

Tallinn – Kohtla – Järve II

1962 / 68

149.1

500

30

44

Kohtla – Järve – Narva

1960

45.1

350 / 400

30

52

Tartu – Rakvere

1979

133.2

500

50

33

Izborsk – Tartu

1975

85.7

500

50

37

Pskov – Riga

1972

21.3

700

50

40

Izborsk – Inčukalns

1984

21.3

700

50

28

Branch lines

79.2

Total

885.0

Table 2.4: Gas transmission system

Due to the technical condition, the natural gas pressure is limited in the oldest sec- tions of gas transmission pipelines Tallinn–Kohtla– Järve–Narva. N-1 [%] = 104.48% The N-1 criterion for Estonia is 104.48%. Taking into account the limitations of the Russian and Estonian transmission systems, the interconnection in IP Narva can be deemed as partially operational. The Estonian gas transmission system can rely on receiving gas only on the cross-border interconnection with Russia through Värska and the connection with Latvia through Karksi. In case of disruption of the largest infrastructure in Estonia-cross-border connection with Latvia, the gas loss would amount to 7.0mcm/ day.

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Baltic Energy Market Interconnection Plan GRIP 2014–2023

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