Three Chipmakers Could Consume 15% of Taiwan's Power by 2030

TSMC, Micron Technology and United Microelectronics Corporation could consume 49.8 billion kilowatt-hours of purchased electricity in Taiwan in 2030, equal to 15 percent of the island's projected power demand. That figure comes from a new Greenpeace Taiwan report, Visible Chips, Invisible Costs, released Tuesday.

The analysis also projects a water squeeze. The three companies' combined municipal water withdrawals could reach 191.7 million cubic meters by 2030 — 8 percent of Taiwan's projected residential water supply. Both numbers describe one mechanism: Taiwan is expanding advanced semiconductor manufacturing for artificial intelligence and high-performance computing, and that expansion carries a physical bill in grid power and tap water. The buildout includes a TSMC-anchored advanced packaging cluster in Kaohsiung.

How did Greenpeace build the projection?

The report analyzed electricity and water use from 2022 through 2025 and modeled 2030 demand. Greenpeace said it combined corporate disclosures, Taiwan Ministry of Environment emissions data, derived energy estimates and field interviews.

The method has clear edges.

• The electricity measure covers purchased grid power only and excludes self-generated electricity.
• Where facility-level figures for Micron and UMC were unavailable, researchers estimated consumption from Scope 2 emissions and official grid emission factors, then cross-checked against Taiwan renewable-energy certificate records.
• The 2030 electricity scenario applies Taipower's projected 53.8 percent growth in semiconductor-industry power consumption from 2026 to 2030 to the companies' estimated 2025 external electricity use.
• The water scenario applies a 1.5-times multiplier, based on an International Energy Agency projection for water use tied to data-center chip manufacturing, to each company's 2023 tap-water withdrawals. Reclaimed, recycled and exchanged water are excluded.

Greenpeace framed the numbers as shared sector-growth scenarios, not company-specific forecasts.

What has consumption looked like so far?

It is already rising. Combined purchased electricity reached 25.8 billion kilowatt-hours in 2022 and 32.4 billion kilowatt-hours in 2025 — 11 percent of Taiwan's total demand that year. Combined tap-water withdrawals rose from 134 million cubic meters in 2022 to 146.6 million cubic meters in 2025.

TSMC dominates the totals. The foundry accounted for about 80 percent of the three companies' combined grid electricity use and 72 percent of their tap-water withdrawals, according to Greenpeace. Under the 2030 scenario, TSMC's purchased electricity demand alone would reach 39.8 billion kilowatt-hours.

What are the companies doing about it?

Each has its own resource-efficiency and renewable-energy programs. TSMC said in its 2025 annual report that it aims to source 60 percent of its electricity from renewable energy by 2030 and 100 percent by 2040. The company said it had contracted 7.3 gigawatts of renewable-energy capacity by the end of 2025, with supply to be delivered gradually.

Greenpeace called on semiconductor manufacturers to expand direct renewable-electricity procurement, reclaimed-water use, community consultation and local environmental monitoring. The release did not include responses from TSMC, Micron or UMC to the report's projections.

The gap between contracted capacity and the 2030 scenario is the story to watch. If Taipower's 53.8 percent growth forecast holds, Taiwan's grid planners — not just its chipmakers — will need to answer for where the remaining 85 percent of the island's power comes from.

By Daniel Okafor