Overview

Note:

(1)Scope: UMC

Note:

(1)Scope: UMC consolidated financial report

(2)R&D expenses are compiled in accordance with the International Financial Reporting Standards approved by the Financial Supervisory Commission, Executive Yuan

Note:

(1) Scope: UMC

(2) Sustainable products include low power consumption, low leakage, and power management products, as well as microcontroller units, automotive chips, long service life products, and epidemic prevention & medical related products.

Note:

(1)Scope: UMC and its foundry subsidiaries HJ, USCXM, Wavetek, and USJC, with 100% coverage of these key customers.

(2)The surveyed key customers represent ≥75% of UMC’s total revenue and reflect the majority of UMC and its foundry subsidiaries' business scope and markets.

Note: From 2021 to 2022, The scope of statistic included UMC fabs in Taiwan and Singapore.
Since 2023, the scope of statistics for UMC's subsidiaries includes mainland China subsidiaries HJ and USCXM, The UMC Japan subsidiary USJC and the Taiwan subsidiary Wavetek. And it covers all regular, temporary and Dispatched staff.

Note: The scope of statistic included UMC fabs in Taiwan and Singapore, UMC's subsidiaries includes mainland China subsidiaries HJ and USCXM, the UMC Japan subsidiary USJC and the Taiwan subsidiary Wavetek. And it covers all regular, temporary and Dispatched staff.

Note:

The approach for consolidating our GHG inventory is operational control. Global warming potentials (GWPs) used in the calculation is according to the definitions in the IPCC Fifth Assessment (IPCC AR5) (2014), and the GHG emissions is based on version 6.0.4 of the Ministry of Environment Greenhouse Gas Emissions Factor Management Table.

Note:

The approach for consolidating our GHG inventory is operational control. CO₂ emissions are estimated based on the latest local power factor available in the year.

(1) Taiwan: 0.494 kgCO₂e/kWh;

(2) Singapore: 0.412 kgCO₂e/kWh;

(3) China: 0.5366 kgCO₂e/kWh;

(4) Japan: Mie 0.421 kgCO₂e/kWh, Yokohama 0.431 kgCO₂e/kWh

Note: Renewable energy usage was excluded.

2024 Water Withdrawal by Source

Note: Reclaimed water amount is used by UMC’s fabs in Taiwan and Singapore. The groundwater withdrawal amount is used by subsidiary USJC.

Note: Sources of third-party withdrawal include municipal water and reclaimed water