Fracking, or hydraulic fracturing, is a method used to extract natural gas and oil from deep underground shale rock formations. While it has transformed energy landscapes in some parts of the world, its use in the UK has faced significant debate and is currently under a moratorium. This guide explores what fracking involves, its potential environmental and economic impacts, and its current legal standing in the UK.
Understanding the complexities of energy sources like fracking helps us appreciate the shift towards more sustainable options. Fuse Energy is committed to providing homes with clean, abundant power. If you are looking to switch to an energy supplier that prioritises a sustainable future, click here to get started.
Fracking is a well-stimulation technique designed to release hydrocarbons trapped within shale rock. It involves a precise engineering process to access and extract these resources.
The process of hydraulic fracturing
Hydraulic fracturing involves injecting a high-pressure mixture of water, sand, and chemicals (known as 'fracturing fluid') into a wellbore to create cracks in deep rock formations. These fractures allow natural gas or oil, previously trapped in impermeable rock, to flow more freely to the surface. The process typically begins with drilling a vertical well, which then extends horizontally into the shale layer. Sand proppants are used to keep these fractures open, allowing the gas or oil to flow to the surface. The extracted gas is then processed and transported.
Key components of fracking fluid
A typical fracturing fluid is composed overwhelmingly of water (about 90%) and a proppant (like sand or ceramics, about 9.5%). The remaining small percentage, typically 0.5% to 2%, consists of chemical additives. These chemicals serve various purposes, such as reducing friction, preventing bacterial growth, and dissolving minerals. The specific composition of these fluids can vary depending on the geological conditions and the company undertaking the operation.
The potential environmental and community impacts of fracking have been a major source of controversy in the UK. Concerns include:
Water usage and contamination concerns
Fracking requires vast quantities of water, raising questions about local water supplies. There are also worries about the potential for fracturing fluids, which contain chemicals, to contaminate groundwater if not properly managed. This can occur through leaks from faulty well casings or improper disposal of wastewater.
Induced seismicity and geological risks
Fracking operations have been linked to induced seismicity, particularly in Lancashire. While most tremors are minor, they have caused public concern and led to operational restrictions. The injection of wastewater into disposal wells, a common practice in fracking, can also trigger seismic events by increasing pressure on existing fault lines.
Greenhouse gas emissions and climate change
Although natural gas is often touted as a 'bridge fuel', methane leaks during extraction and transport contribute to greenhouse gas emissions, impacting climate targets. Methane is a potent greenhouse gas, and its release into the atmosphere can undermine efforts to combat climate change. For more ways to reduce your home's carbon footprint, consider exploring energy efficiency tips.
Local community concerns
Residents near fracking sites have raised concerns about increased noise, traffic, and potential impacts on property values and the rural landscape. The industrial nature of fracking operations can disrupt local environments and lead to public opposition.
The history of fracking in the UK has been marked by exploration, public opposition, and policy shifts.
Early exploration and initial protests
Initial exploration for shale gas began in the UK in the early 2010s, with companies like Cuadrilla Resources undertaking exploratory drilling. These early activities were met with significant public protest, particularly from environmental groups and local residents concerned about potential impacts.
The 2011 and 2019 moratoriums
A moratorium on fracking was first introduced in 2011 following two earth tremors near Blackpool, which were linked to operations by Cuadrilla Resources. The moratorium was lifted in 2012 with stricter regulations. However, further seismic events at Cuadrilla's Preston New Road site in Lancashire led the government to impose another moratorium in November 2019, effectively halting all fracking operations in England. This decision was based on a report by the Oil and Gas Authority (OGA), which concluded it was not possible to accurately predict the probability or magnitude of tremors caused by fracking.
Brief reversal and reinstatement in 2022
In September 2022, amidst a global energy crisis, the government briefly lifted the moratorium, citing the need to bolster domestic energy supply. This decision was met with widespread criticism from environmental groups and opposition parties. The moratorium was subsequently reinstated in October 2022, following further scientific review and public pressure.
Current status of fracking in the UK
Currently, fracking remains effectively banned in the UK. The government's stance reflects a broader shift in energy policy and a response to public and scientific concerns.
Focus on renewable energy and energy security
The UK government's current energy strategy prioritises accelerating the deployment of renewable energy sources and nuclear power to achieve energy security and net-zero targets. This includes ambitious plans for expanding clean energy generation, such as solar power, with a target of 70 gigawatts (GW) by 2035. You can learn more about the various renewable energy sources in the UK.
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