Energy

Abstract

Public trains use electricity, and buses need fuel to work. Fossil fuel combustion can help produce electricity, or ignite the internal combustion engine of a bus; however, both processes emit pollution and greenhouse gases. Electricity can be produced from renewable clean energy sources such as hydroelectric, solar, or wind, which does not emit pollution or greenhouse gasses. The greenhouse gas effect is essential to human survival, but too much greenhouse gases leads to global warming. The cost of electricity and fuel is a major expense in mass transit, so it makes sense to try to save money by becoming more energy efficient, and conserve energy. Mass transit operations all around the world are big energy users, so when transit agencies opt to conserve and save energy, use or buy green energy, it profoundly contributes to a healthier planet. Transit agencies invest in the future of renewable or green energy when purchasing renewable energy credits.