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These lights come with rechargeable batteries that are charged by the sun during the day. Search and consult with local appliance centers, this technology is more available than most think. The bright light will only wake you up, so using low wattage is best and you'll save energy too. This water will be filtered and fill your toilet for flushing. . Your school building and equipment can use a lot of energy; there are many ways to help reduce this, including by leaving signs to switch off lights when not in use, holding talks about ways to save energy together, finding ways to reduce heating and cooling usage, etc.

Summary:
Use a solar-powered outdoor light. Use the sun to heat your hot water. Install a low wattage motion sensor night light for the bathroom. Install a shower water recycler. Save energy at school