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A renewable energy advisor is helping a municipality analyze the cost savings of installing solar panels. The initial cost of installation is $25,000, and the panels save $3,000 annually in energy costs. Calculate the payback period for the investment.
A science policy analyst is evaluating the efficiency of a new energy storage system. The system stores 200 megawatt-hours (MWh) of energy and loses 5% over time. Calculate the amount of energy actually stored and usable.
Usable Energy = 200 MWh - 10 MWh = 190 MWh.
In a study on wind turbine output, a unit produces 2.5 megawatts (MW) at peak efficiency. If the average efficiency drops to 75%, what is the output in megawatts?
An urban planner is assessing the carbon reduction potential of a new public transit system. If each new electric bus reduces emissions by 30 metric tons annually and the city plans to replace 15 diesel buses, calculate the total annual reduction.
A science policy analyst is reviewing a proposal to fund 12 clean energy projects, each requiring $4.2 million. If the government allocates $45 million, determine how much remains after full funding.
A city is installing LED streetlights to reduce energy use. Each old light uses 150 watts; each new LED light uses 40 watts. If 800 lights are replaced, calculate the total power saved in kilowatts.
Power saved per light = 150W - 40W = 110W.