World electricity demand increased by 4% in 2018, growing nearly twice as fast as overall energy demand

Derived from the flow of electric charge, electricity has become an integral part of modern life. Many work, communication, transport and leisure activities depend on this form of energy. Given its important role in our lives, access to a secure supply of electricity is essential. Most electricity globally is produced from fossil fuels in large power plants, where heat energy from burning coal, natural gas, or oil is converted into electricity. However, low-carbon sources – nuclear energy and renewables such as solar, wind, hydro and biomass – are making up increasingly large proportions of the global generation mix as a result of efforts to mitigate climate change as well as falling technology costs. The electricity from the generators is typically fed into an electrical grid to be delivered to the consumers. Electricity first flows over large distances through the transmission network and then within regional distribution networks before finally getting delivered into our homes and businesses.

Continually matching the supply of electricity with demand is a complex task. Electricity markets are therefore designed not only to ensure ahead of time that sufficient generation capacity is available for the expected demand (typically through forward contracts) but also to perform real-time balancing using flexibility measures such as dispatchable generation, energy storage and interconnection. Nevertheless, the electricity system is transforming towards an even more complex future. While a higher share of intermittent renewables and decentralised generation in the mix disrupt the supply side, the demand side is challenged by a high level of uncertainty as electrification of heat and transport is advanced as a key decarbonisation strategy. Thus, the future will bring about additional roles for the grid, a greater need for flexibility and new business models, all of which will make electricity systems increasingly dependent upon digital technologies.

Learn more about these sources of electricity by exploring our Energy Matrix.

Discover UK energy professionals' views of the future of electricity, gathered in our annual Energy Barometer.

Search for articles on electric vehicles and the role of electricity in transport published in our magazines.

What's new?

New technologies help to keep electricity systems stable

Services provided by battery energy storage projects are increasingly important to operation of the GB electricity grid. Here, Noriker Power’s Alastair Stevens describes how ‘dynamic containment’ is beginning to play a key role in keeping the system frequency close to 50 Hz.

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Reforming electricity markets for innovation

Do today’s electricity markets enable innovative, efficient, whole energy system decarbonisation? Not yet, explains a new report from Energy Systems Catapult, but reform is within reach.

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O Rudgard, Power cuts ‘will become more severe’ as electricity use explodes, Daily Telegraph, 16 June 2021, p 2

In UK, The Government’s independent advisory committee on climate change predicts greater impacts of power outages following the increasing dependence on electricity for vehicles and home heating, raising its present energy usage from 20% to 65% by 2050. This is particularly important since extreme ...

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UK electricity demand returns to pre-COVID levels

Cold winter weather saw electricity demand in Britain return to pre-COVID levels in the first three months of 2021, according to data from market analyst EnAppSys. Total demand on Britain’s power market (at the transmission system level) across Q1 2021 was 56.0 TWh, close to the 55.7 TWh in Q1 last ...

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Renewable electricity powers wind turbine blade manufacturer

Black Dog Biogas, the owner and operator of an anaerobic digestion plant near Newport on the Isle of Wight, has completed commissioning of a private wire to supply renewable electricity to Vestas’ neighbouring wind blade manufacturing facility. The project will supply low-carbon electricity to Vesta...

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Events and training

CIRED 2021

CIRED, Europe’s leading International Conference and Exhibition on Power Distribution are hosting their 26th International conference from 20 – 23 September 2021. CIRED is your opportunity to hear new research, ideas and initiatives from world leading experts over three days of technical...

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Aviation Jet Fuel - November 2021

This 3-day training course will provide delegates with an overview of aviation jet fuel, focusing on the jet engine, its underlying principles and fuel requirements as well as the critical characteristics of jet fuel, including additives, Industry best practice adopted in the supply, handling and us...

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Technical guidance publications

Controlling the risk from static electricity - DVD training tool

Static electricity is a phenomenon most of us will have experienced. In industrial environments, where flammable atmospheres are present, it can have devastating effects. To complement EI Model code of safe practice Part 21: Guidelines for the control of hazards arising from static electricity, the ...

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Risks of Static Electricity: DVD and guidelines bundle

To place an order, please contact our distributors:t: +44 (0)1767 604 951 e: energyinst@turpin-distribution.comIn industrial environments, where flammable atmospheres are present, static electricity can have devastating effects. In the petroleum industry, static electricity is a key conce...

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Model Code of Safe Practice Part 21: Guidelines for the control of hazards arising from static electricity

 Essential reading for all those involved in the fuels distribution and supply chain, this document provides up to date guidance on key equipment, procedures and operational practices used for reducing static electric ignition risk.In the Dangerous Substances and Explosive Atmospheres Regulatio...

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CIBSE Guide K: Electricity in Buildings

Provides information on electrical services in buildings. For 'lighters' - offers information on power factor correction, power supplies, uninterruptible power supplies and batteries.For lifts specialists - covers high voltage systems and electromagnetic compatibility and sources of interference.For...

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