As of May 2025, some * centrifuges were installed in Iran as part of the country's uranium enrichment program. The most numerous type of centrifuges were the first-generation IR-1 model, which amounted to units but accounted for just about ** percent of enrichment capacity. Additionally, Iran has installed almost *more advanced models of centrifuges, including the IR-2m, IR-4, and IR-6 types.
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Institute for Science and International Security. (June 9, 2025). Number of installed centrifuges in uranium enrichment facilities in Iran as of May 2025, by type [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 22, 2026, from /statistics/1619547/installed-uranium-centrifuges-by-type-in-iran/
Institute for Science and International Security. "Number of installed centrifuges in uranium enrichment facilities in Iran as of May 2025, by type." Chart. June 9, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 22, 2026. /statistics/1619547/installed-uranium-centrifuges-by-type-in-iran/
Institute for Science and International Security. (2025). Number of installed centrifuges in uranium enrichment facilities in Iran as of May 2025, by type. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 22, 2026. /statistics/1619547/installed-uranium-centrifuges-by-type-in-iran/
Institute for Science and International Security. "Number of Installed Centrifuges in Uranium Enrichment Facilities in Iran as of May 2025, by Type." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 9 Jun 2025, /statistics/1619547/installed-uranium-centrifuges-by-type-in-iran/
Institute for Science and International Security, Number of installed centrifuges in uranium enrichment facilities in Iran as of May 2025, by type ÌÇÐÄÆƽâ°æ, /statistics/1619547/installed-uranium-centrifuges-by-type-in-iran/ (last visited July 22, 2026)
Number of installed centrifuges in uranium enrichment facilities in Iran as of May 2025, by type [Graph], Institute for Science and International Security, June 9, 2025. [Online]. Available: /statistics/1619547/installed-uranium-centrifuges-by-type-in-iran/
