Power resources provide the energy needed for homes, irrigation pumps, transport, industry, communications, hospitals and education. Pakistan uses a mixture of oil, natural gas, coal, hydel power, nuclear energy and newer renewable sources. The central issue is to provide reliable, affordable and environmentally acceptable energy across a large and varied country.

Energy and electricity

Coal, oil, natural gas, flowing water, sunlight, wind and uranium are primary energy resources. Electricity is a secondary energy carrier produced from these sources and delivered through a grid. Electricity is convenient and flexible but difficult to store cheaply at national scale, so supply and demand must be balanced continuously.

Fuel may also be used directly, for example gas for heating or oil for transport. An answer should not treat all energy use as electricity generation.

Renewable and non-renewable

Coal, oil, gas and uranium are non-renewable because stocks are finite. Hydel, solar, wind, biomass, wave, tidal and geothermal resources are renewable when managed within natural flows. Renewable does not mean impact-free: dams alter rivers, wind farms need land and solar systems require materials and disposal planning.

Each source differs in cost, reliability, location, construction time and environmental effect.

Why power matters

Industry needs dependable energy for machinery, heating, cooling and digital systems. Farmers need pumps, tube wells, cold storage and processing. Homes need lighting, fans and appliances, while schools, hospitals and communications depend on electricity.

Unreliable supply raises production cost because firms use backup generators, lose output or avoid investment. Rural electrification can improve services and enterprises but needs affordable connection and maintenance.

Energy mix

An energy mix combines sources so that weakness in one is balanced by others. Hydel output varies with water flow, solar with daylight, wind with speed, and imported oil with world prices. Gas turbines can respond quickly but fuel may be scarce or costly.

Diversity improves security, but too many small incompatible systems can complicate planning. Transmission and storage must develop with generation.

Demand management

Energy planning is not only about constructing plants. Efficient motors, buildings, appliances, industrial processes and reduced transmission loss lower the amount of new capacity required. Time-of-use tariffs can shift some demand away from peak periods.

Conservation is usually faster than building a large power station, but it requires standards, enforcement and consumer cooperation.