Cosmo Eco Power Co., Ltd. (Headquarters: Shinagawa-ku, Tokyo; President: Fumiaki Nokura; hereinafter "Cosmo Eco Power"), a group company of Cosmo Energy Holdings Co., Ltd. (Headquarters: Chuo-ku, Tokyo; President: Shigeru Yamada), and NSK Ltd. (Headquarters: Shinagawa-ku, Tokyo; Director, President and CEO: Toshikazu Nishisa; hereinafter "NSK") are promoting joint initiatives (hereinafter "the Initiatives") including multiple demonstration experiments aimed at the long-term stable operation of wind power generation equipment and the advancement of its operation and maintenance. As part of these Initiatives, we are pleased to announce that we have conducted a demonstration experiment for the first time in an actual operating environment*1 using NSK's proprietary technology (hereinafter "the Technology") for monitoring the lubrication status of bearings for wind power generation equipment, confirming its applicability for practical use. *1 NSK research as of June 2026 Image of New Condition Monitoring Method Features and Expected Effects The Technology is expected to enable earlier detection of changes in bearing condition compared to conventional methods, contributing to improved reliability of wind power generation equipment and more efficient maintenance. We will strengthen our efforts towards the practical application of this Technology going forward. Through the Initiatives, both companies will provide new value to customers by leveraging the knowledge gained, and contribute to the stable supply of renewable energy and the realization of a carbon-neutral society. 1. Background of the Initiatives Wind power is positioned as a primary energy source for renewable energy in Japan, and its introduction is expected to expand further. However, in addition to the increasing size of equipment and the diversification and harshness of installation environments, coupled with the impact of social conditions such as recent soaring material prices, wind power generation busines