27.3. Balance of CO2 emission allowances in the Union Registry
| Balance of emission allowances | Year ended 31 December 2022 |
Year ended 31 December 2021 |
|---|---|---|
| Mg EUA | Mg EUA | |
| Allowances recorded at the beginning of the financial year | 2 188 000 | 6 732 596 |
| Allowances surrendered: | ||
| previous year’s emissions | (7 141 170) | (10 047 653) |
| current year’s emissions | − | (5 871 051) |
| Allocation of free-of-charge allowances | 138 010 | 131 815 |
| Allowances purchased on the secondary market | 12 999 000 | 17 673 672 |
| Allowances sold on the secondary market | (5 791 000) | (6 431 379) |
| Allowances recorded at the end of the financial year | 2 392 840 | 2 188 000 |
The volume of CO2 emission allowances purchased presented in the table above relates to CO2 emission allowances purchased for the TAURON Group’s redemption needs and within the trading portfolio. In principle, the sale relates to the trading portfolio and the potential sale of CO2 emission allowances originally acquired for the TAURON Group’s redemption needs and sold in connection with restructuring measures.