Most of us know who our energy supplier is. They're the company that sends our bill each month and the one we might contact if we want to switch tariffs or ask a question about our account.
But have you ever wondered who actually gets the electricity to your home?
Behind the scenes, there's another organisation responsible for maintaining the network of cables, substations, and power lines that deliver electricity to homes and businesses across the UK. They're called Distribution Network Operators, or DNOs for short.
You may never have heard of them before, but they play an important role in keeping the lights on.
What Does DNO Stand For?
DNO stands for Distribution Network Operator.
A DNO is responsible for the electricity network in a specific geographical area.
They own and maintain the infrastructure that carries electricity from the national transmission network to homes, businesses, schools, hospitals, and other buildings.
Think of the electricity system like a road network.
The National Grid is like the motorway system, transporting electricity across the country. DNOs then manage the local roads that carry that electricity into towns, villages, and individual properties.
Without DNOs, the electricity generated at power stations and renewable energy sites would never reach your plug sockets.
What does a DNO actually do?
Most people only think about electricity when something goes wrong, but DNOs are working behind the scenes every day to keep the network running safely and reliably.
Their responsibilities include:
Maintaining the electricity network
DNOs are responsible for looking after thousands of miles of underground cables, overhead power lines, transformers, and substations.
These assets need regular maintenance, repairs, inspections, and upgrades to ensure they continue operating safely.
Many parts of the electricity network are exposed to the elements, so DNOs also work to minimise disruption caused by storms, flooding, strong winds, and other weather-related events.
Restoring power during outages
If there's a power cut in your area, your DNO is usually the organisation responsible for investigating the fault and restoring electricity.
Power cuts can happen for a range of reasons, including:
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Severe weather
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Damaged power lines
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Equipment failures
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Roadworks accidentally damaging cables
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Fallen trees
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Unexpected faults on the network
When an outage occurs, DNO engineers work to identify the cause and restore power as quickly and safely as possible.
Connecting new homes and businesses
Whenever new homes, offices, housing developments, or commercial buildings are constructed, they need to be connected to the electricity network.
DNOs assess these connection requests and ensure the local network has enough capacity to support the additional demand.
Supporting renewable energy
As more households install solar panels and more businesses invest in renewable energy technologies, DNOs have an increasingly important role to play.
They help manage how locally generated electricity is connected to and shared across the network.
Preparing for electric vehicles
The number of electric vehicles on UK roads continues to grow.
This creates new demands on the electricity network as more people install home charging points and businesses develop public charging infrastructure.
DNOs are investing in network improvements to help support this transition and ensure the electricity system is ready for the future.
What's the difference between a DNO and an energy supplier?
This is one of the most common points of confusion.
Your energy supplier and your DNO are not the same thing.
Your energy supplier is the company you choose to buy electricity and gas from. They manage your account, send bills, collect payments, and offer tariffs.
Examples include suppliers such as British Gas, Octopus Energy, EDF, and E.ON.
Your DNO, on the other hand, owns and maintains the physical electricity network in your area.
A useful way to think about it is this:
Your supplier sells you the electricity, but your DNO makes sure it can physically reach your home.
Can I choose my DNO?
No.
Unlike your energy supplier, you cannot choose which DNO serves your property.
Your DNO is determined by where you live.
Each DNO is responsible for a specific region of Great Britain and operates the electricity distribution network within that area.
No matter which supplier you choose, the same local DNO will continue to maintain the electricity infrastructure serving your property.
What should I do during a power cut?
Many people assume they should contact their energy supplier if they lose power.
In reality, your DNO is usually the best place to start.
The easiest way to report or check a power cut is by calling 105.
This free national number will connect you to the appropriate electricity network operator for your area.
You can use 105 to:
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Report a power cut
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Find out if there's a known outage nearby
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Get updates on restoration times
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Receive advice during an electricity emergency
The service is available 24 hours a day, seven days a week.
Priority services and additional support
Many DNOs offer additional support for people who may be particularly affected by a power cut.
This can include people who:
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Are older
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Have a disability
- Rely on medical equipment that requires electricity
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Live with a long-term health condition
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Have young children
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Need extra communication support
Many energy suppliers and network operators work with the Priority Services Register (PSR), which helps identify customers who may need additional assistance during an emergency.
Depending on the circumstances, support may include welfare checks, alternative communication methods, or practical help during prolonged outages.
If you think you may be eligible, it's worth speaking to your energy supplier or DNO about the support available.
Why DNOs matter more than ever
The UK's electricity network is changing.
More people are installing solar panels, charging electric vehicles at home, and moving away from fossil fuels. At the same time, households and businesses are becoming increasingly reliant on electricity for everyday activities.
This means DNOs are not only maintaining existing infrastructure but also helping to prepare the network for the future.
Their work is helping to support cleaner energy, increased demand, and the technologies that many of us will rely on in the years ahead.
So, the next time you switch on a light, charge your phone, or put the kettle on, there's a whole network of people and infrastructure helping to make that happen.
How IE Hub can help
If you're experiencing financial difficulties, managing energy bills can feel overwhelming. While your DNO is responsible for maintaining the electricity network, there may be additional support available through your energy supplier, local schemes, or the Priority Services Register.
At IE Hub, we help people understand their finances and share their budget information securely with organisations when they need support. This can make it easier to have conversations about affordability and access the help that's available.
If you're struggling with energy costs, it's important to seek support as early as possible. Many suppliers and support organisations would much rather work with you to find a solution than see bills become unmanageable.
