What is the difference between a DNO, IDNO and ICP?
The terms DNO, IDNO, and ICP are connected to the electricity distribution network in the UK. Each plays a unique role in the connection, operation, and upkeep of electrical infrastructure. We outline what each one does and how they are different from each other.
What is a DNO?
DNO stands for Distribution Network Operator. It is a company that owns and operates the infrastructure that transports electricity from the transmission network (the high-voltage system) to homes and businesses (the low-voltage system).
DNOs oversee the local distribution network, which includes tasks like maintenance, repairs, and upgrades of overhead lines, underground cables, substations, and other related equipment. They also play a crucial role in ensuring a reliable electricity supply within their designated regions and addressing any power outages that may occur.
In the UK, the distribution network is segmented into various regions, with companies like UK Power Networks, Northern Powergrid, and Western Power Distribution serving as DNOs in their specific areas.
What is an IDNO?
IDNO stands for Independent Distribution Network Operator. It is a type of company that runs a distribution network, but unlike a DNO, it doesn’t own the primary network infrastructure. Instead, IDNOs usually manage smaller networks, often found in new developments or specific regions that a DNO doesn’t cover.
They may also offer services to private networks, such as those in industrial parks or large residential areas. IDNOs take on the responsibility of operating, maintaining, and connecting new networks to the existing grid. This ensures that new properties and developments are effectively linked to the electricity network, usually within a specific geographical zone established by the regulator, Ofgem (the Office of Gas and Electricity Markets).
Ofgem serves as the UK government’s regulator for the electricity and gas sectors. It is instrumental in monitoring the distribution and supply of electricity, making sure that the energy market functions fairly and efficiently.
What is an ICP?
ICP stands for Independent Connections Provider. It is a company that specialises in linking new properties or developments to the electricity distribution network. While a DNO or IDNO oversees the network, an ICP takes the hands-on tasks of connecting a site to the grid. This can involve activities like laying down cables, setting up substations, and installing the necessary equipment to guarantee a safe and dependable connection.
Typically, ICPs are engaged in the design, installation, and commissioning of these new connections. They work closely with DNOs or IDNOs to make sure that the infrastructure aligns well with the existing network. For instance, an ICP may play a key role in a new housing project to ensure that the homes are properly connected to the electricity grid.
How do they Differ?
- A DNO is responsible for managing the electricity distribution network. Their primary areas of focus include the core network infrastructure, ongoing maintenance, and ensuring a reliable supply of electricity.
- An IDNO manages and runs smaller, independent distribution networks. Their main priorities include new developments, private networks, and specific local areas.
- An ICP facilitates the connection of new developments to the existing electrical network. The primary focus of an ICP is on physical connection tasks, which include a range of activities aimed at establishing a reliable and safe electrical connection.
Commercial Independent Connections Provider
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