Energy storage is the capture of energy produced at one time for use at a later time to reduce imbalances between energy demand and energy production. A device that stores energy is generally called an accumulator or battery.

Geothermal energy is thermal energy extracted from the Earth's crust. It combines energy from the planet's formation and from radioactive decay.

An energy system is a system primarily designed to supply energy-services to end-users. The intent behind energy systems is to minimise energy losses to a negligible level, as well as to ensure the efficient use of energy.

Energy in Bangladesh describes energy and electricity production, consumption and import in Bangladesh. Bangladesh is an emerging economy with a fast-growing energy consumption.

The economy of Bihar has been among the fastest-growing state economies in India in recent years. During the financial year 2025–26, Bihar's gross state domestic product (GSDP) is projected to grow by around 10–12% at current prices.

The energy policy of the United Kingdom refers to the United Kingdom's efforts towards reducing energy intensity, reducing energy poverty, and maintaining energy supply reliability. The United Kingdom has had success in this, though energy intensity remains high.

Open energy-system models are energy-system models that are open source. These models can also be known as open energy models or open-source energy-system models or some combination thereof.

Most energy in Israel comes from fossil fuels. The country's total primary energy demand is significantly higher than its total primary energy production, relying heavily on imports to meet its energy needs.

A target market is a group of customers within a business's serviceable available market at which a business aims its product features, marketing efforts and pricing. A target market is a subset of the total market for a product or service.

Generic brands of consumer products (often supermarket goods) are distinguished by the absence of a brand name, instead identified solely by product characteristics and identified by plain, usually black-and-white packaging. Generally they imitate more expensive branded products, competing on price.