Utility Connections for New Business Premises: What to Arrange and When

Moving Into New Business Premises? The Utility Connections You Arrange in the First Two Weeks Will Affect Your Costs for the Next Two Years.

Utility connections — electricity supply, gas supply, water, and communications — are the infrastructure layer that makes business premises operational. For businesses taking on new premises, whether through lease, purchase, or construction, the decisions made about utility connections in the first weeks of occupation have long-term cost and operational consequences that most business owners significantly underestimate.

This guide covers what utility connections are required for typical UK business premises, the process for establishing them, the timeline and cost expectations, and the specific mistakes that result in expensive problems down the line.

The Four Utility Connections Every Business Premises Needs

Electricity supply: An electricity connection provides power from the Distribution Network Operator’s (DNO) infrastructure to your premises. For existing premises with an established supply, this connection already exists — the question is whether the capacity (agreed supply level, measured in kVA) is sufficient for your intended operations and who your current supplier is. For new builds or major refurbishments, a new connection or connection upgrade may be required.

Gas supply: Not all commercial premises have a gas connection. Properties in areas without mains gas infrastructure must use alternative heating fuels (LPG, oil, electric heating, or heat pumps). For premises that do have a gas connection, the same supplier questions apply as for electricity. The gas supply is managed through the gas transporter (GT) — the network operator responsible for the pipes delivering gas to your premises.

Water and drainage: Commercial water supplies are managed by regional water companies. For most business premises taking over an existing property, the water connection is in place — the process is notifying the water company of the change of occupier and establishing a new account. For higher-consumption businesses (manufacturing, food processing, hospitality), water rates and metering are a significant cost item that warrants specific attention.

Communications infrastructure: Broadband and telephony connections for business premises are managed separately from energy utilities but follow a similar establishment process. For the purposes of this article, we focus on energy utilities — electricity and gas.

Taking Over Existing Premises: What to Do on Day One

When a business moves into existing premises, the energy supply connections are already in place. What changes is the account holder — who is responsible for the energy consumed from the date of occupation onwards.

The process is not automatic. Suppliers do not automatically transfer supply to a new occupier. Until the new occupier notifies the existing supplier and establishes either a new account or a new contract, the supply continues under deemed contract terms — the most expensive basis on which commercial energy is provided.

Day one actions for energy utility connections:

1. Identify the electricity supplier: Check for existing bills at the premises, or use the MPAN (Meter Point Administration Number) — found on the electricity meter — to identify the supplier through the Electralink system or by contacting your broker.
2. Identify the gas supplier: Use the MPRN (Meter Point Reference Number) from the gas meter to identify the gas transporter and supplier.
3. Take timestamped meter readings: Photograph both meters with date and time visible. This establishes your liability boundary.
4. Notify the existing suppliers: Contact them, provide your business name and contact details, and confirm the date from which you are in occupation.
5. Arrange competitive contracts immediately: Don’t stay on deemed rates for longer than necessary. A broker can typically have competitive contracts in place within 3–5 working days.

New Build Connections: The Process and Timeline

For new build commercial properties or significant refurbishments requiring upgraded supply capacity, the connection process is more involved and significantly longer.

Electricity connection (new or upgraded):

A new electricity connection or supply upgrade requires an application to your regional Distribution Network Operator (DNO). The process involves:

• A connection quotation from the DNO — typically 65 working days for a formal quotation on larger connections
• Design and specification of the connection, including the agreed supply capacity (kVA) and connection voltage
• Civil works by the DNO or an approved contractor to lay cables from the network to the premises
• Installation of metering equipment
• Connection and commissioning

Total timeline for a new commercial electricity connection: 3–12 months, depending on the complexity of the connection, the distance from existing infrastructure, and whether network reinforcement is required. Reinforcement — upgrading the local network to support the additional load — is the most time-consuming and expensive element, potentially adding 12–18 months and £20,000–£100,000+ in connection costs for heavily loaded supply areas.

Gas connection (new):

A new gas connection requires an application to the gas transporter (GT) responsible for your area — typically Cadent Gas, Northern Gas Networks, SGN, or Wales & West Utilities depending on your location. The process involves a connection quotation, design, and physical connection of a gas main from the existing network to the premises boundary. Timeline: 3–9 months for a standard connection; longer where mains reinforcement or extension is required.

For properties in areas with no mains gas infrastructure, a connection is not available. Alternative heating fuel strategies (LPG, oil, heat pumps) should be assessed from the outset rather than assumed as a temporary measure.

Connection Costs: What to Budget

Connection costs vary enormously depending on distance from existing infrastructure, required capacity, and network conditions. Indicative ranges:

• Standard electricity connection upgrade (existing supply, increased kVA): £2,000–£15,000
• New electricity connection (new build, close to existing infrastructure): £5,000–£30,000
• New electricity connection requiring network reinforcement: £20,000–£150,000+
• New gas connection (standard, mains nearby): £2,000–£8,000 for the connection to the building boundary
• New gas connection requiring mains extension: Highly variable — can reach £30,000–£100,000+ if significant main laying is required

These are DNO/GT connection costs and do not include the internal electrical installation or gas pipework within the premises, which are the responsibility of the business and are arranged through an approved electrical contractor or gas safe registered engineer.

Agreed Supply Capacity: Getting It Right

One of the most consequential and frequently misunderstood decisions in establishing a new electricity connection is the agreed supply capacity — the maximum kVA of demand the connection is designed to support.

Under-specify the capacity and you constrain future operations — adding EV chargers, new equipment, or expanding production may require an expensive upgrade application and months of waiting. Over-specify the capacity and you pay higher standing charges (DNO capacity charges are partly based on agreed supply level) for capacity you never use.

For new business premises, we recommend engaging an energy consultant or electrical engineer to model your anticipated demand — including growth plans, EV charging intentions, and any planned equipment upgrades — before specifying the connection capacity. The incremental cost of correctly sizing the connection is minimal; the cost of getting it wrong is significant.

How Telnergy Supports Businesses with Utility Connections

We manage the energy supply establishment process for clients taking on new premises — identifying existing suppliers, notifying incumbents, taking meter reads, and arranging competitive contracts from day one. For businesses requiring new or upgraded connections, we work with DNOs and approved contractors to manage the application and quotation process.

If you’re planning a move, a new build, or a significant expansion that changes your energy supply requirements, a conversation at the planning stage avoids the most costly mistakes.

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Telnergy Limited • Independent Energy Consultants since 2002 • Ofgem TPI Registered • Christchurch, Dorset