Renewable Energy
Renewable energy (or green energy) is energy from renewable natural resources that are replenished on a human timescale. The most widely used renewable energy types are solar energy, wind power, and hydropower. Bioenergy and geothermal power are also significant in some countries. Some also consider nuclear power a renewable power source, although this is controversial. Renewable energy installations can be large or small and are suited for both urban and rural areas. Renewable energy is often deployed together with further electrification. This has several benefits: electricity can move heat and vehicles efficiently and is clean at the point of consumption.[1][2] Variable renewable energy sources are those that have a fluctuating nature, such as wind power and solar power. In contrast, controllable renewable energy sources include dammed hydroelectricity, bioenergy, or geothermal power.
Renewable energy systems have rapidly become more efficient and cheaper over the past 30 years.[3] A large majority of worldwide newly installed electricity capacity is now renewable.[4] Renewable energy sources, such as solar and wind power, have seen significant cost reductions over the past decade, making them more competitive with traditional fossil fuels.[5] In most countries, photovoltaic solar or onshore wind are the cheapest new-build electricity.[6] From 2011 to 2021, renewable energy grew from 20% to 28% of global electricity supply. Power from the sun and wind accounted for most of this increase, growing from a combined 2% to 10%. Use of fossil energy shrank from 68% to 62%.[7] In 2022, renewables accounted for 30% of global electricity generation and are projected to reach over 42% by 2028.[8][9] Many countries already have renewables contributing more than 20% of their total energy supply, with some generating over half or even all their electricity from renewable sources.[10][11]
The main motivation to replace fossil fuels with renewable energy sources is to slow and eventually stop climate change, which is widely agreed to be caused mostly by greenhouse gas emissions. In general, renewable energy sources cause much lower emissions than fossil fuels.[12] The International Energy Agency estimates that to achieve net zero emissions by 2050, 90% of global electricity generation will need to be produced from renewable sources.[13] Renewables also cause much less air pollution than fossil fuels, improving public health, and are less noisy.[12]
The deployment of renewable energy still faces obstacles, especially fossil fuel subsidies,[14] lobbying by incumbent power providers,[15] and local opposition to the use of land for renewable installations.[16][17] Like all mining, the extraction of minerals required for many renewable energy technologies also results in environmental damage.[18] In addition, although most renewable energy sources are sustainable, some are not.
South East England is one of the nine official regions of England at the first level of ITL for statistical purposes. It consists of the counties of Buckinghamshire, East Sussex, Hampshire, the Isle of Wight, Kent, Oxfordshire, Berkshire, Surrey and West Sussex. Major towns and cities in the regions include Brighton and Hove, Milton Keynes, Southampton, Portsmouth, Slough, Reading and Oxford.
South East England is the third largest region of England, with an area of 19,096 km2 (7,373 sq mi), and is also the most populous with a total population of over eight and a half million (2011). The region contains seven legally chartered cities: Brighton and Hove, Canterbury, Chichester, Oxford, Portsmouth, Southampton and Winchester. The region's close proximity to London and connections to several national motorways have led to South East England becoming a prosperous economic hub with the largest economy of any region in the UK, after London. The region is home to Gatwick Airport, the UK's second-busiest airport, and Heathrow Airport (the UK's busiest airport) is located adjacent to the region's boundary with Greater London. The coastline along the English Channel provides numerous ferry crossings to mainland Europe.
The region is known for its countryside, which includes two national parks: the New Forest and the South Downs, as well as the North Downs, the Chiltern Hills and part of the Cotswolds. The River Thames flows through the region and its basin is known as the Thames Valley. It is also the location of a number of internationally known places of interest, such as HMS Victory in Portsmouth, Cliveden in Buckinghamshire, Thorpe Park and RHS Wisley in Surrey, Blenheim Palace in Oxfordshire, Windsor Castle in Berkshire, Leeds Castle, the White Cliffs of Dover and Canterbury Cathedral in Kent, Brighton Palace Pier, and Hammerwood Park in East Sussex, and Wakehurst Place in West Sussex. The region has many universities; the University of Oxford is the oldest in the English-speaking world, and ranked among the best in the world.
South East England is host to various sporting events, including the annual Henley Royal Regatta, Royal Ascot and The Derby, and sporting venues include Wentworth Golf Club and Brands Hatch. Some of the events of the 2012 Summer Olympics were held in the south east, including the rowing at Eton Dorney and part of the cycling road race in the Surrey Hills.
In medieval times, South East England included much of the Kingdom of Wessex, which was the precursor to the modern state of England. Winchester was the capital of England after unification of the various states, including the kingdoms of Kent, Sussex and Mercia. Winchester stopped being the administrative capital of England some time in the 13th century as its influence waned while the City of London dominated commerce. The last monarch to be crowned at Winchester was Richard II in 1377, although the last monarch to be crowned by the Bishop of Winchester was Queen Mary I in 1553.