Load forecasting is a technique used by power companies to predict the power or energy needed to balance the supply and load demand at all the times.

A load following power plant, is a power plant that adjusts its power output as demand for electricity fluctuates throughout the day.

Used in electric power generation to illustrate the relationship between generating capacity requirements and capacity utilization. The demand data is ordered in descending order of magnitude

Load balancing, load matching, or daily peak demand reserve refers to the use of various techniques by electrical power stations to store excess electrical power during low demand periods for release as demand rises. The aim is for the power supply system to have a load factor of 1.

A shipping terminal designed specifically to handle LNG ships the LNG product.

Live-line working, also known as hotline maintenance, is the maintenance of electrical equipment, often operating at high voltage, while the equipment is energised.

Lithostratigraphy is a sub-discipline of stratigraphy, the geological science associated with the study of strata or rock layers.

The lithology of a rock unit is a description of its physical characteristics visible at outcrop, in hand or core samples, or with low magnification microscopy.

A Li-ion battery is a type of rechargeable battery.

Lithification is the process in which sediments compact under pressure, expel connate fluids, and gradually become solid rock.

Liquid-metal batteries are used for industrial power backup, special electric vehicles and for grid energy storage, to balance out intermittent renewable power sources such as solar panels and wind turbines. The electrode and electrolyte layers are heated until they are liquid and self-segregate due to density and immiscibility.

Liquid-dominated reservoirs (LDRs) are more common with temperatures greater than 200 °C (392 °F) and are found near young volcanoes surrounding the Pacific Ocean and in rift zones and hot spots.

Power plants that utilise a liquid fuel.

Liquid penetrate inspection (LPI) is a widely applied and low-cost inspection method used to check surface-breaking defects in all non-porous materials.

A liquid metal cooled nuclear reactor, liquid metal fast reactor or LMFR is an advanced type of nuclear reactor where the primary coolant is a liquid metal.

Liquid fuels are combustible or energy-generating molecules that can be harnessed to create mechanical energy, usually producing kinetic energy.

Liquid biofuels are derived from biological material and can be produced from a variety of carbon sources.

The liquid fluoride thorium reactor is a type of molten salt reactor. LFTRs use the thorium fuel cycle with a fluoride-based, molten, liquid salt for fuel.

A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure.

Liquefied petroleum gases, also referred to as simply propane or butane, are flammable mixtures of hydrocarbon gases.