No. A power outage is not always caused by an electrical fault inside your property. Electricity can be lost because of a fault or planned work on the distribution network, a problem with the incoming supply, a faulty meter, or an issue within your own fixed electrical installation. The pattern of the outage helps determine who should investigate it.
The quickest distinction:
if several nearby properties have also lost power, a network problem is more likely. If only your property, part of the property or one circuit is affected, an internal fault becomes more likely — but a single-property outage can still originate before your consumer unit, so it should not automatically be blamed on your wiring.
Key Takeaways
- A power cut can originate on the electricity network rather than inside your home or business.
- Neighbours losing power at the same time is a useful sign that the problem may be network-side.
- If only one circuit, room or part of the property is affected, an internal electrical problem becomes more likely.
- A whole-property outage with all consumer-unit switches apparently on can still have several possible causes.
- In Great Britain, network power cuts can be reported through 105; a faulty electricity meter is normally dealt with by your energy supplier.
Can a Power Outage Come from Outside the Property?
Yes. Ofgem explains that power cuts commonly occur because of damage to electricity-network wires, cables or other equipment, including storm damage, as well as planned work needed to maintain or improve the network.
Those faults occur on the infrastructure that distributes electricity to properties. They are different from a fault on a socket circuit, damaged cable or appliance within your own installation.
In Great Britain, a network outage should be reported to the local electricity network operator. Ofgem directs consumers to Powercut 105 to identify or contact the appropriate network operator.
Supplier and network operator are not the same organisation.
Your energy supplier bills you for electricity and is normally the contact for a faulty meter. The network operator manages the local distribution network and deals with network power cuts.
What Does the Pattern of the Power Loss Tell You?
The area affected is one of the most useful clues. It does not prove the cause, but it helps separate a wider supply interruption from a fault confined to your property.
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If roughly half the property has gone off, that specific scenario is covered separately in
Half of house has no power – causes and fixes UK.
This article stays focused on deciding whether the outage is coming from the external supply or from within the property.
If Only My Property Has No Power, Is the Fault Definitely Inside?
No. A single-property outage makes an internal problem more plausible, but it does not prove that the fault is within your wiring.
Electricity reaches the consumer unit through incoming supply equipment. Depending on where the problem occurs, loss of power can involve equipment for which the network operator is responsible, the electricity meter associated with your supplier, or equipment within your own installation.
UK Power Networks, which operates the distribution network across London and other areas of the South East and East of England, explains that the service fuse and incoming network cable are network equipment, while the fuse box or consumer unit within the property belongs to the property side of the installation.
That boundary is why “my neighbours still have electricity” should not automatically lead to electrical work being carried out inside the property before the supply side has been considered.
What If the Consumer Unit Is Still On but There Is No Power?
Switch positions are useful clues, but they do not identify every cause of power loss. If the main switch, RCDs, RCBOs or circuit breakers appear to be on and the property still has no electricity, the fault may lie elsewhere in the supply path or may require proper electrical testing to locate.
That particular symptom has its own article:
Power Cut but Consumer Unit Still On? Causes & Checks.
It covers the consumer-unit scenario in greater depth without confusing it with the broader network-versus-property question here.
Should You Contact the Network Operator, Energy Supplier or an Electrician?
The right contact depends on where the problem appears to be.
Contact the electricity network operator
If there is a known local power cut, nearby properties are also affected, or there appears to be a problem with network-owned incoming equipment, the network operator is the appropriate contact. Ofgem advises consumers to report power cuts to their network operator.
Contact your energy supplier
Ofgem specifically advises contacting the energy supplier where loss of power is caused by a faulty energy meter. Your supplier and network operator perform different roles, so confirming where the interruption starts can prevent the problem being sent to the wrong organisation.
Arrange electrical fault finding
If the external supply is available but a circuit, part of the property or the internal installation remains without power, the next step may be to
have the electrical fault investigated.
Testing can then establish whether the issue involves a circuit, connection, protective device or another part of the fixed installation.
What Can You Check Safely During a Power Outage?
Keep the initial checks observational. You do not need to remove electrical covers or touch incoming supply equipment to work out whether the outage looks local or property-specific.
- Check whether street lighting or nearby properties also appear to have lost electricity.
- Check your network operator's power-cut information or use Powercut 105 in Great Britain.
- Look at the consumer unit to see whether a breaker, RCD or RCBO is visibly in a tripped or off position.
- Establish whether the whole property is affected or only certain rooms, sockets or lights.
- If the entire property is off and no network outage is shown, consider whether the supplier or network operator needs to check the supply before assuming the internal installation is faulty.
Do not dismantle the meter, service head, network fuse or incoming cables.
Energy Networks Association safety guidance warns that incoming supply cables can remain live even when the property's main switch has been turned off.
When Should a Power Loss Be Treated as Urgent?
Power loss itself is not always dangerous, but additional warning signs change the situation. Burning smells, smoke, sparking, significant overheating, exposed conductors or visibly damaged electrical equipment should not be treated as routine troubleshooting.
If the danger appears to involve internal electrical equipment, avoid touching the affected equipment and seek
urgent electrical help.
Where damaged network cables, service equipment or overhead lines are involved, stay clear and report the problem to the electricity network operator; immediate danger to life should be treated as an emergency.
Can a Network Fault Affect Only One Property?
Yes. A network-side problem does not have to affect an entire street. The distribution system includes equipment serving individual supplies as well as equipment serving larger groups of properties.
This is why checking the neighbours is useful but not conclusive. If they still have power, the investigation simply becomes narrower: the incoming supply to your property, the meter and the internal installation all remain possible areas to consider.
Can an Internal Electrical Fault Cause a Complete Power Loss?
Yes. Internal electrical faults can operate protective devices and interrupt all or part of a property's supply. The exact behaviour depends on the consumer-unit arrangement, the affected circuit and the nature of the fault.
UK Power Networks notes that trip switches operate when faults occur within internal circuits. If a protective device has operated repeatedly, refuses to stay on or there are other warning signs, repeatedly resetting it without understanding the cause is not a substitute for diagnosis.
The important point is not to classify every outage as either “the grid” or “bad wiring” from one symptom alone. Start with the outage pattern and work towards the correct responsibility boundary.
What Should You Do Next?
First determine whether the outage is wider than your property. A confirmed local network cut belongs with the electricity network operator; a meter fault belongs with the energy supplier. If those possibilities are ruled out and the problem remains within the property, electrical diagnosis is the appropriate next step.
Before requesting electrical fault finding, note which rooms and circuits are affected, whether any protective device has tripped, when the outage started and whether there were warning signs such as a smell, noise, heat or repeated tripping. Those observations can help narrow the investigation without attempting unsafe DIY testing.
Official Guidance
The network, supplier and electrical-safety distinctions in this article were checked against current guidance available on 21 August 2026.
Network Fault Ruled Out but the Power Is Still Off?
If the electricity supply is available but your property, a circuit or part of the installation still has no power, targeted testing can identify where the fault is occurring before repair work is planned.
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