Change of the clearing prices

In connection with significant decrease of IRDN24 as well as IRDN8.22 indices values during the day of January the 1st 2011 in relation to the value of indices determined on the day of December the 31st 2011, as well as taking into consideration the fact that the indices will compose the grounds for calculation of collateral margin values, which have been made since the day of January the 7th 2012, for the delivery baskets encompassing January 2012, the Company Management Board decides that the values listed below shall be used for calculation of average value of RDN indices, being clearing prices used for calculation of collateral margins for the fore-mentioned delivery periods:

(i) for BASE type contracts - instead of IRDN24 index value for the day of January the 1st 2011 the value of IRDN24 index as of December the 31st 2011, determined at the level of 157,65, shall be adopted

(ii) for PFFPEAK type contracts - instead of IRDN24 index value for the day of January the 1st 2011 the value of IRDN24 index as of December the 23rd 2011, determined at the level of 156,65, shall be adopted

(iii) for PEAK7 type contracts - instead of IRDN8.22 index value for the day of Januart the 1st 2011 the value of IRDN8.22 index as of December the 31st 2011, determined at the level of 180,88