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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