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3 years ago ÃÛÌÇÖ±²¥ student leaders investedÌý$500,000Ìýin an endowment for energy-efficient projects.Ìý37.8Ìýpercent is the annual return on investment for the ÃÛÌÇÖ±²¥ green fund. $24,000Ìýis the amount the school saved in efficiencies because of fund-related projects in its first year, followed by $59,583 last year and $143,500Ìýthis year. Projects include replacing radiator values and windows and switching to LED lights and must have payback periods under 5Ìýyears.