Cable Gullies and Cross-Pavement EV Charging in Scotland

The Problem: No Driveway, No Home Charging

If you live in a tenement flat, a terraced house, or any property without off-street parking in Scotland, you've been stuck paying public charger rates — often 50–75p/kWh — while your neighbours with driveways charge overnight at 7–15p/kWh on a smart tariff.

Trailing a charging cable across the pavement is illegal under the Highways Act (obstruction), a trip hazard, and an invitation for your council to get involved.

A cable gully solves this. It's a narrow channel cut into the pavement between your property boundary and the kerb. Your charging cable runs through the channel, flush with the ground, with a hinged lid that closes flat when not in use. No trip hazard, no obstruction, fully legal.

The £3,500 Pilot Grant

Transport Scotland and the Energy Saving Trust are running a pilot scheme offering up to £3,500 per household toward cross-pavement charging infrastructure.

What the Grant Covers

• The pavement gully itself — cutting, installation, reinstatement
• Alternative solutions where a gully isn't suitable (e.g., pop-up kerbside bollard)
• The physical infrastructure from your property boundary to the kerb

What the Grant Does NOT Cover

• The EV charger unit on your wall
• The electrical installation inside your property (wiring, consumer unit work)
• Any DNO supply upgrade if required

You may also be eligible for up to £400 toward the charger unit itself if you're a flat owner or renter — we'll confirm your eligibility before you apply.

Eligible Areas (Pilot Only)

• East Lothian
• Perth & Kinross
• Renfrewshire

This is a pilot scheme. If you're outside these areas, you're not currently eligible — but expansion to other council areas is expected if the pilot is successful.

Eligibility Requirements

• No off-street parking — no driveway, garage, or private space where a charger could be installed without crossing the pavement
• You own, lease, or have an order for a fully electric vehicle (plug-in hybrids do not qualify)
• You have or will install a home charge point as part of the project
• You have written council approval for a cross-pavement solution at your specific address

The Application Process (Do Not Skip Steps)

Step 1: Council Approval

Contact your local council (East Lothian, Perth & Kinross, or Renfrewshire) and ask about cross-pavement cable management permissions. You need written approval in principle for a cross-pavement solution at your specific address.

Things that can complicate council approval:

• Listed buildings or conservation areas — additional planning consent may be required
• Adopted pavements — most public pavements are adopted (council-maintained), which is what the grant is designed for. Unadopted pavements are a grey area
• Utility runs under the pavement — gas, water, telecoms, or electricity cables may restrict where the gully can be cut. A utilities survey (CAT scan) may be required
• Tenement common areas — if the cable route crosses communal property (e.g., a shared close or garden), you may need factor or owners' association consent in addition to council approval

Step 2: Get a Detailed Quote

Once the council gives you the green light, contact an approved installer for a detailed, itemised quote showing:

• Cross-pavement works (gully or bollard installation)
• EV charger supply and installation (shown separately)
• Any consumer unit or electrical upgrade work required
• VAT breakdown (the charger installation is 20% VAT; solar and battery work is 0% VAT if bundled)

Step 3: Apply to the Energy Saving Trust

Submit your online application with your quote and council approval documentation. Keep everything organised — you'll need photos and paperwork later for the claim.

Step 4: Wait for the Offer Letter

Reviews typically take around 8 working days. Do not instruct any installer to begin work until you have the offer letter in writing.

Step 5: Install and Claim

Book the installation. When complete, submit your claim with invoices and installation photos. Refunds are typically processed within 15 working days.

The Electrical Reality: What Happens Inside Your Property

This is where most guides stop and where the real cost variables begin. The pavement gully is the visible bit. The electrical work inside your property is what determines whether the installation is straightforward or requires significant preparation.

Consumer Unit Assessment

A 7kW EV charger (the standard domestic unit — Myenergi Zappi, Ohme, Hypervolt, etc.) draws 32A on a single-phase supply. This means:

• Dedicated circuit: The charger gets its own 32A Type A RCBO (or Type B MCB with separate Type A RCD protection) in your consumer unit. It cannot share a circuit with anything else
• Spare ways: If your consumer unit has no spare ways, you need either an additional enclosure or a full consumer unit replacement
• Board condition: If your board uses BS 3036 rewirable fuses, or lacks RCD protection, it doesn't meet current BS 7671 18th Edition regulations. We'll recommend upgrading it. This is a safety requirement

A consumer unit upgrade adds £350–£500 to the project. If your board is more than 15 years old, it's likely overdue anyway.

The DNO Looping Problem (Critical for Tenements and Terraces)

This is the big one that most EV charging guides don't mention, and it's particularly common in Scottish tenements and older terraces.

What is a looped supply?

In many multi-occupancy buildings and terraced streets, the DNO (SP Energy Networks across most of Central Scotland) connects properties in series — a "loop" — rather than giving each property its own dedicated cable from the street transformer. Your supply cable comes in, passes through your meter, and then loops out to the next property.

Why does this matter for EV charging?

A 7kW charger draws 32A continuously. On a looped supply, your 60A or 80A service fuse may not have enough headroom to support the charger plus your existing household load (cooker, shower, heating). If the service fuse is only 60A and your peak household demand is already 35–40A, adding a 32A charger exceeds the supply capacity.

What are the symptoms?

• The service fuse (main fuse at the meter) blows when the charger runs at full power alongside other heavy loads
• Voltage drop at the charger causes slow or failed charging sessions
• In the worst case, the overload affects the looped supply to neighbouring properties

What's the fix?

1. Load management / dynamic load balancing — smart chargers (Zappi, Ohme, Hypervolt) can be set to monitor total household load via a CT clamp and reduce charging current when other heavy loads are running. This is the cheapest solution and often sufficient for a 60A supply
2. DNO supply upgrade — if load balancing isn't enough (e.g., you have electric heating and a 60A fuse), you can apply to SP Energy Networks for a supply upgrade. This typically means a new dedicated cable from the street, a new meter position, and a larger service fuse (100A). Lead time is 6–12 weeks and cost varies — some upgrades are free under the DNO's connection obligations, others carry a charge depending on the work required
3. Three-phase upgrade — for commercial premises or larger residential properties, upgrading to a three-phase supply provides 100A per phase. A 22kW three-phase charger then sits comfortably on its own phase. This is overkill for most residential situations but worth mentioning if you're planning multiple chargers or other heavy electrical loads

Cable Routing

The EV charger cable route runs from your consumer unit, through the property, out to the external wall-mounted charger, and then via the pavement gully to the kerb. Key considerations:

• Cable type: 6mm² SWA (Steel Wire Armoured) or equivalent for the external run. Internal runs use 6mm² T+E in conduit or trunking
• Length: The longer the cable run, the higher the voltage drop. For runs over 20m, we may need to upsize to 10mm² to keep voltage drop within the 5% limit specified in BS 7671
• Penetrations: External wall penetrations must be sealed and fire-stopped. In tenements, penetrations through common walls or shared structures may need building consent

Realistic Costs (Excluding the Grant)

The grant covers the pavement gully. Everything else is your cost. Here's what to budget:

• EV charger unit (Zappi, Ohme, Hypervolt): £800–£1,200 including installation
• Consumer unit upgrade (if required): £350–£500
• DNO supply upgrade (if required): £0–£1,500+ (varies by situation)
• Additional cable routing (long runs, complex buildings): £150–£400

With the £3,500 gully grant and a straightforward electrical installation, the total out-of-pocket cost is often £800–£1,500 for the charger and electrical work.

What If You're Not in a Pilot Area?

If you live outside East Lothian, Perth & Kinross, or Renfrewshire, the cross-pavement grant isn't available to you yet. But the electrical work is the same regardless of location. If your council allows cross-pavement solutions (check with them directly), you can still install a cable gully — you'll just pay the full cost of the pavement works yourself.

The OZEV grant (up to £350 off the charger unit for renters and flat owners) is available UK-wide and isn't limited to pilot areas.

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OZEV-approved EV charger installers serving Stirling, Falkirk, Perth, Dunblane, Bearsden, and Central Scotland.