NCERT · Class 10 · Science · Sources of EnergyWhat are the qualities of an ideal source of energy? Explain any two.

An ideal source of energy is one which would do a large amount of work per unit volume or mass, be easily accessible, be easy to store and transport, and perhaps most importantly, be economical. First, it should have a high calorific value, meaning it releases a large quantity of heat per unit mass when burned. Second, it should be safe and convenient to handle, store, and transport from the generation site to the consumers without heavy infrastructural losses or safety hazards. Additionally, an ideal source should cause minimum environmental pollution to preserve ecological balance and should be continuously available over a long period of time.