Revenue by segment

Indicator, KZT billion 2021 2022 2023
Sales of crude oil 3,704 4,586 4,615
Sales of oil refined products 2,027 3,252 2,680
Railway cargo transportation 1,191 1,287 1,678
Sales of uranium products 667 964 1,391
Sales of gas products 763 895 987
Sales of refined gold 719 943 813
Telecommunication services 580 620 669
Air transportation 332 492 549
Electricity complex 345 428 534
Oil and gas transportation fee 323 296 320
Oil processing fees 203 204 248
Electricity transmission services 314 184 197
Railway passenger transportation 59 91 106
Postal services 43 46 50
Other revenue 369 438 545
Interest revenue 47 48 49
Rental income 26 40 88
11,709 14,815 15,434

Revenue growth by segments was due to the impact of external and internal circumstances.

In the oil sector, there was an increase in crude oil export sales volumes in 2023, which compensated for the drop in Brent crude oil prices to USD 82.6/barrel from USD 101.3/barrel in 2022. Sales of refined products decreased as a result of lower prices and lower refining volumes. Railway cargo transportation increased due to higher transit traffic and higher revenues from freight car fleet operations. Sales of refined gas products increased due to higher export sales of gas, while sales of uranium products increased due to higher spot prices for U3O8 and higher sales volumes as a result of additional customer requests for increased annual deliveries under existing contracts as well as new long-term supply contracts. Oil and gas transportation also increased due to higher volumes of crude oil transported by pipeline and sea routes. The growth in the electricity sector was due to the increase in tariffs from June 2023. Refined gold sales decreased due to lower supplies of gold-containing raw materials, while telecommunication services showed an increase in data services revenue. The increase in postal services revenue was primarily due to increased revenue from expedited mail, parcel post, and specialty communications services.

More detailed information is provided in the Fund's financial statements for 2023 (Annex 1).