in PLN millions, unless otherwise stated
KGHM Polska Miedź S.A. Group
Consolidated financial statements for 2022 Translation from the original Polish version
Note 9.3 Depreciation/amortisation
Property, plant and equipment
from
1 January 2022
to
from
1 January 2021
to
1 January 2022
to
31 December
From
1 January 2021
to
Note 4.1
settled in profit or loss
cost of manufacturing
products
2 153 2 043
37
34
being part of the
manufacturing cost of assets
155 128
4
3
Note 9.4 Provision for decommissioning costs of mines and other facilities
Accounting policies
Important estimates, assumptions and judgments
The provision for future decommissioning costs of mines
and other technological facilities is recognised based on
the estimated expected costs of decommissioning of such
facilities and of restoring the sites to their original
condition following the end o
made on the basis of ore extraction forecasts (for mining
facilities), and technical-economic studies prepared either
by specialist firms or by the Parent Entity.
In the case of surface mines, certain actions and costs
may influenc
e the scope of restoration work, such as
costs of hauling barren rock, incurred during mine life and
due to its operations, are recognised as operating costs
being an integral part of the production process and are
therefore excluded from costs that are a
calculating the provision for mine decommissioning.
Revaluation of this provision is made in two stages:
1) estimation of the costs of decommissioning mines to
the current value in connection with the change in
prices using the price change indices of construction-
assembly production published by the Central
Statistical Office.
2)
discounting of the decommissioning costs to the
current value using effective discount rates calculated
based on the nominal interest rates and the inflation
rate (quotient of the nominal rate and the inflation
rate), whereby:
− the nominal interest rate in the Parent Entity is
based on the yield on treasury bonds at the end of
the reporting period, with maturities nearest to
the planned financial outflow and if there are no
treasury bonds
with maturities close to the
planned financial outflows - the nominal interest
rate is determined by the professional judgment
of the Parent Entity’s Management on the basis of
the consistency of the adopted assumptions. In
the KGHM INTERNATIONAL LTD. Group – it is the
rate of return on investments in ten- and twenty-
year treasury bills of the US Federal Reserve and
the rate of return on investments in five–year
treasury bonds issued by the governments of
Canada and Chile.
In 2022, the Parent Entity revised its approach to the discount
rates used to estimate environmental provisions. At the end
of the reporting period, with a bond yield of +/- 6.845% and
inflation of +/- 13.1% (at the end of the comparable period,
respectively +/-3.6% and +/-7.6%), the Parent Entity received
and applied for the years 2022-2023 a negative real discount
rate of -5.53% instead of a rate of ”0”. For the subsequent two
measurement periods, that is for 2024 and 2025, the Parent
Entity adopted inflation rates at the level of the NBP’s
forecast, that is 5.9% and 3.5%, respectively, and for
subsequent periods, following the NBP’s forecast - at the level
of 2.5%, in line with the long-term inflation target. Moreover,
for the first 10 years of measurement of the provision (that is
to 2032), a risk-free rate of 6.845% (measurement of 10-year
treasury bonds) was adopted, due to the fact that it is the only
publicly available information on the risk-free rate for the
subsequent 10 years, and pursuant to the adopted judgment,
this rate was not modified. The Parent Entity will adjust the
risk-free
rate to the level of this rate announced at every
subsequent end of the reporting period in order to measure
the provision at those days.
In turn, taking into account the high volatility of the risk-free
rate that was in the last period, based on quotations of 10-
year treasury bonds, the Parent Entity applied a professional
judgment to determine this rate for the estimation of
provisions falling after a period of 10 years from the end of
the annual reporting period based on the historical
observation of the ratio of the risk-free rate to the assumed
inflation target. As a result of the judgement, the Parent Entity
adopted the risk-
free rate of 3.5% for the estimation of
provision for 10 years from the end of the annual reporting
period, which translated into a real discount rate of 0.98%.
In the current period, for the purpose of the measurement of
the provision for mine decommissioning
technological facilities located in the United States of America
and Canada, a real discount rate at the level of 1.19% to 1.67%
was adopted depending on the mine. In the comparable
period a real discount rate of “0” was adopted due to the
inflation remaining at the level of the nominal discount rate.
With regard to the costs of some activities carried out during
the exploratory work of surface mines,
time serve to restore (recultivate) such pits, the Group made
a judgment and recognised that these costs are mostly