Astellas calculates the costs of investment and expenses related to environmental conservation for its facilities in Japan and their outcomes based on the Ministry of the Environment’s “Environmental Accounting Guidelines.”
 

Environmental conservation costs in fiscal 2024 comprised ¥256 million in investments and ¥2,443 million in expenses (including depreciation costs). The main investments for preventing pollution included the maintenance of wastewater treatment plants. Investments in global environmental conservation included updating the air conditioning equipment at our research center. The economic benefits generated through environmental protection activities amounted to ¥2.5 million, which includes the sale of waste organic solvents and waste metals and lower costs of treating waste materials. All high-concentration PCBs have been processed.