| As at December 31, 2021 | As at December 31, 2020 | |
|---|---|---|
| PREPAYMENTS | ||
| Cost to acquire customers | 56 | 50 |
| Long-term contracts | 38 | 43 |
| Property and tort insurance | 14 | 14 |
| Logistics costs related to coal purchases | 4 | 17 |
| IT services | 15 | 16 |
| Social Fund | 7 | 10 |
| Other prepayments | 18 | 20 |
| OTHER CURRENT ASSETS | ||
| VAT receivables | 537 | 519 |
| Excise tax receivables | 17 | 17 |
| Advances for deliveries | 507 | 11 |
| Other current assets | 27 | 82 |
| TOTAL OTHER ASSETS | 1,240 | 799 |
The amount of VAT receivables is related mainly to an estimate of electricity sales, unread on metering equipment as of the reporting date. The amount of excise tax receivables regards the exemption from excise tax of electricity generated from renewable energy sources on the basis of a document confirming the redemption of the certificate of origin.
The amount of advance is mainly related to future coal supplies for the purposes of the Conventional Generation segment.
ACCOUNTING RULES
Cost to acquire customers
Pre-contractual costs incurred in connection with the performance of the contract are included in other assets and recognised as prepaid expenses if it is probable that these costs will be covered in the future by revenue received from the customer.
The Group recognised the following costs to be settled over time as at December 31, 2021 and December 31, 2020
| Year ended December 31, 2021 | Year ended December 31, 2020 | |
|---|---|---|
| AS AT JANUARY 1 | 155 | 148 |
| Costs of bringing a contract to conclusion – capitalised | 61 | 53 |
| Amortisation and impairment | (54) | (46) |
| AS AT DECEMBER 31 | 162 | 155 |
| Current | 56 | 50 |
| Non-current | 106 | 105 |
The costs of bringing a contract to conclusion primarily include agency commissions for acquiring or retaining a customer.
The asset is depreciated on a systematic basis, taking into account the period over which the goods or services to which it relates are transferred to the customer.