The National Control Commission for Prices and Energy by its Resolution No. O3E-263 as of 24 August 2018 approved AB Amber Grid Natural Gas Transmission System Balancing Rules (See Rules.pdf).

For every Balancing Period (i.e. on a daily basis) natural gas market participants shall balance their quantities of natural gas injected into the gas transmission system with the ones off-taken from the gas transmission system. If the market participant, involved in balancing the transmission system, fails to balance the amount of gas, he pays imbalance charge to the Transmission System Operator, if a market participant involved in balancing the transmission system has caused lack of gas in the transmission system or the Transmission System Operator pays imbalance charge to him, if a market participant involved in balancing the transmission system has caused the surplus of gas in the transmission system, by applying balancing prices.

The value of the marginal buying price shall be deemed to equal the higher gas price (over the balancing period) among (1) the highest gas price at which the Transmission System Operator purchased gas during the balancing period, and (or) sold on the trading platform (Gas Exchange) at the Lithuanian virtual trading point, and the weighted average price of gas traded on the trading platform (Gas Exchange) at the Lithuanian virtual trading point over the balancing period, which shall be published by the trading platform operator, increased by 10 percent.

Marginal selling price is the lower price of the balancing gas (during the balancing period) among (1) the lowest gas price at which the Transmission System Operator purchased gas during the balancing period, and (or) sold on the trading platform (Gas Exchange) at the Lithuanian virtual trading point, and (2) the weighted average price of gas traded on the trading platform (Gas Exchange) at the Lithuanian virtual trading point over the balancing period, which shall be published by the trading platform operator, reduced by 10 percent. When calculating marginal sell and marginal buy prices only within day and day ahead short-term standardized products are used.


The imbalance tolerance limit shall be applied for the market participants involved in balancing the transmission system and causing imbalances. The imbalance tolerance limit shall be equal to 5 percent of the gas quantity injected during the balancing period to the transmission system in October-April and equal to 15 percent of the gas quantity injected during the balancing period to the transmission system in May-September. Marginal buy price and/or marginal sell price is not applied to the quantity of imbalance gas that is lower than the imbalance tolerance, while the balancing gas is bought or sold at the weighted average price of natural gas traded on the trading platform (Gas Exchange) at the Lithuanian virtual trading during the balancing period. If the quantity of imbalance gas is higher than the imbalance tolerance, the balancing gas is bought or sold for the marginal buy and/or marginal sell price. Where market participants cause imbalance and where the Transmission System Operator does not have sufficient gas resources available to ensure a proper operation of the Gas Transmission System, the Transmission System Operator shall buy/sell respective quantities of balancing gas either on the Natural Gas Exchange and/or according to bilateral contracts. The Transmission System Operator shall run its trade in balancing gas on the Natural Gas Exchange in accordance with the applicable provisions of the Natural Gas Exchange Regulation.

According to AB Amber Grid Natural Gas Transmission System Balancing Rules, information about of the system users‘ balancing status shall be supplied in separate balancing accounts opened for each individual system user.

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