As of May 2025, the IAEA reported that * advanced centrifuges were installed in three nuclear facilities in Iran. This equipment is used in the enrichment of uranium. Since early 2024, the installation of centrifuges in the country has accelerated. Over the same period, Iranian stockpiles of enriched uranium also increased. In particular, highly enriched of up to 60percent reached over ***kilograms as of May 2025.
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Institute for Science and International Security. (June 9, 2025). Number of advanced centrifuges installed in uranium enrichment facilities in Iran from November 2019 to May 2025 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 21, 2026, from /statistics/1619530/installed-uranium-centrifuges-in-iran/
Institute for Science and International Security. "Number of advanced centrifuges installed in uranium enrichment facilities in Iran from November 2019 to May 2025." Chart. June 9, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 21, 2026. /statistics/1619530/installed-uranium-centrifuges-in-iran/
Institute for Science and International Security. (2025). Number of advanced centrifuges installed in uranium enrichment facilities in Iran from November 2019 to May 2025. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 21, 2026. /statistics/1619530/installed-uranium-centrifuges-in-iran/
Institute for Science and International Security. "Number of Advanced Centrifuges Installed in Uranium Enrichment Facilities in Iran from November 2019 to May 2025." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 9 Jun 2025, /statistics/1619530/installed-uranium-centrifuges-in-iran/
Institute for Science and International Security, Number of advanced centrifuges installed in uranium enrichment facilities in Iran from November 2019 to May 2025 ÌÇÐÄÆƽâ°æ, /statistics/1619530/installed-uranium-centrifuges-in-iran/ (last visited July 21, 2026)
Number of advanced centrifuges installed in uranium enrichment facilities in Iran from November 2019 to May 2025 [Graph], Institute for Science and International Security, June 9, 2025. [Online]. Available: /statistics/1619530/installed-uranium-centrifuges-in-iran/
