- Made in North Devon since 1973
- BSI Kitemark ready-mixed concrete
- Manufactured to BS EN 14992
- UK-wide & European delivery
Civils · DNO · M&E plant
Custom Plinths.
Cast to your engineer's schedule, not ours.
Bespoke precast plinths and equipment bases for transformers, standby generators, switchgear, BESS containers, EV chargers and process plant. C40/50 concrete to BS 8500-1:2023, manufactured under BS EN 13369 Factory Production Control. Single pieces up to 25 tonnes (about 55,115 lb).
Send us your engineer's drawing, the manufacturer schedule, the cable-entry pattern and the geotechnical data — we will return a shop drawing for sign-off and a programme that matches your DNO outage window.
We work to UKPN, NGED, Northern Powergrid, SSEN and SP Energy Networks substation schedules and direct to principal contractors on data-centre, hospital and BESS projects across England, Wales and Scotland.
- · BS EN 13369 FPC
- · C40/50 + DC-3/4
- · Manufactured to harmonised BS EN standards
- · Up to 25 t (55,115 lb)
- · All DNO frameworks
- · 4-6 week lead
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Hero — completed transformer plinth on site, with cable ducts, earth bonding and lifting points visible
Specification
Common base types and weight ranges.
These are our recurring base types — every plinth we cast is bespoke, but the families below cover most of the work. Send us the engineer schedule and we will quote against your exact loading, cable-entry pattern and bund detail.
| Variant | Footprint | Typical weight | Typical use |
|---|---|---|---|
| Transformer plinth | 1.5m × 1.0m up to 4.5m × 3.0m (4ft11in × 3ft3in up to 14ft9in × 9ft10in) | 0.6 – 6.0 t (1,323 – 13,228 lb) | 11kV / 33kV pad-mounted transformers — DNO schedules |
| Generator plinth | 2.0m × 1.0m up to 6.0m × 2.5m (6ft7in × 3ft3in up to 19ft8in × 8ft2in) | 1.0 – 8.0 t (2,205 – 17,637 lb) | Standby gensets — Cat, FG Wilson, Cummins, Kohler |
| Switchgear / RMU base | 1.0m × 0.8m up to 3.0m × 1.2m (3ft3in × 2ft8in up to 9ft10in × 3ft11in) | 0.4 – 2.5 t (882 – 5,512 lb) | Ring-main units, LV panels, package substations |
| Pump / chiller base | To engineer schedule | Per design | M&E plant on roof or at-grade with anti-vibration |
| Battery / BESS base | 6.0m × 2.5m up to 12.0m × 3.0m (19ft8in × 8ft2in up to 39ft4in × 9ft10in) | 4.0 – 15.0 t (8,818 – 33,069 lb) | Container BESS, EV charger plinths, solar inverter |
| Cable trough plinth | Modular 1.0m (3ft3in) segments | 0.3 – 0.5 t / m (661 – 1,102 lb/m) | Trefoil cable runs feeding the substation plinth |
| Bespoke equipment base | Anything we can lift and ship | Up to 25 t (about 55,115 lb) single piece | Manufacturer-specific schedule, non-standard plant |
Cast-in items — lifting sockets, earth bonds, conduit sleeves, oil-bund kerbs, levelling shims — coordinated to your engineer's drawing. We issue a shop drawing for sign-off before we cut moulds.
Conformity documentation, mix design data and 7- and 28-day cube test results are available on request.
Plinth library
Equipment bases we cast every week.
Photo plates being commissioned — placeholder shot briefs below.
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Completed transformer plinth with cable ducts and earth bonds, transformer landed
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Large genset plinth on site with vibration mounts visible, exhaust stack penetration
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Compact switchgear base with multiple cable entries — substation context
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Long battery-storage container plinth, container landed with conduits running up
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EV charger plinth at motorway services with charging unit installed
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Modular cable trough segments running between substation and feed point
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Transformer plinth in mould at Holsworthy yard, reinforcement and ducts visible
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WCCP HIAB lorry offloading plinth onto prepared sub-base on construction site
Where they go
Common applications.
From a single ground-mount transformer in a Cornish village to a 40-plinth BESS site in Lincolnshire, we cast against the engineer's schedule and the DNO outage window.
- · DNO secondary substations — UKPN, NGED, NPg, SSEN, SPEN frameworks
- · Standby diesel generator installations — hospitals, data centres, telecoms
- · Battery energy storage system (BESS) container plinths
- · EV ultra-rapid charger pads — Gridserve, Osprey, Instavolt
- · Solar farm inverter and transformer skids
- · Industrial chillers, cooling towers and air-handling plant bases
- · Anaerobic digester pump and CHP-engine bases
Standards & references
Cast to current code.
- BS EN 13369
- Common rules for precast concrete products — Factory Production Control.
- BS 8500-1:2023
- Concrete specification — C40/50, exposure classes XC4/XF1, sulphate DC-3/DC-4.
- BS EN 1992-1-1 (Eurocode 2)
- Structural design of reinforced concrete — plinth slab and reinforcement design.
- BS EN 61936-1
- Power installations exceeding 1 kV AC — substation and oil-bund detailing.
- DNO frameworks
- Designed to UKPN, NGED, Northern Powergrid, SSEN and SPEN substation schedules.
Configure your plinth
Send us the engineer schedule and the manufacturer drawing — we will quote inside 48 hours.
Related products
Often ordered alongside.
Common questions
What contractors ask about plinths.
Five questions we answer most weeks. If yours is not here, ring the yard.
How do you size a transformer or generator plinth? +
We work to the manufacturer schedule — Schneider, ABB, Siemens for transformers; Cat, Cummins, FG Wilson for gensets. The plinth has to take the static weight, the seismic spread footing, the cable-entry duct pattern and any oil-bund detail required by BS EN 61936-1. We send a drawing for engineer sign-off before we cut moulds.
What concrete grade do you cast? +
C40/50 to BS 8500-1:2023 is our standard for plinths and equipment bases — exposure XC4/XF1 minimum. For substations we add sulphate resistance (DC-3 / DC-4 if the geotechnical report calls for it). All cast under BS EN 13369 Factory Production Control with cube tests at 7 and 28 days.
Can you cast in earthing, conduits and bund kerbs? +
Yes — every penetration, conduit, earth-rod sleeve, lifting socket and bund upstand cast in to engineer drawings. We coordinate with the principal contractor and DNO design engineer on a shop drawing before mould cutting. Late changes after mould-cut are chargeable.
Do you deliver and install? +
We deliver UK-wide on flatbed or low-loader and offload with our own HIAB up to 12 tonnes. Above that we coordinate a site mobile crane with the principal contractor. We can supply, deliver, set on a pre-prepared sub-base and grout-bed in one visit on most substation programmes.
What is the lead time? +
Civils-grade plinths run 4-6 weeks from drawing sign-off. DNO substation plinths to standard frameworks ship in 3-4 weeks if the schedule matches our existing moulds. Bespoke geometries — non-standard sizes, integrated bunds, complex penetration patterns — typically 6-10 weeks.
How would you like it?
Supply-only or fitted — Custom Plinths
Supply only
Per-unit / per-metre supply
Lead time: 4–6 weeks
- Cast plinth to engineer schedule
- Cast-in lifting sockets, ducts, earth bonds
- Conformity documentation, mix design, cube-test data on request
- Delivery on flatbed or low-loader
- On-site lifting / craneage above 12 tonnes (about 26,450 lb)
- Sub-base preparation and grout-bedding
Fitted (supply + install)
Supply + install crew
Lead time: 5–8 weeks (incl. site slot)
- Everything in supply only
- WCCP HIAB offload up to 12 tonnes (about 26,450 lb)
- Set on prepared sub-base, levelled and grout-bedded
- DNO terminations and electrical fit-out
- Manufacturer commissioning of plant
. Substation and BESS programmes priced per scheme — send the engineer schedule and we will respond with a fixed quote and dates.
Ready to spec it?
Send us the engineer's drawing and the DNO outage date — we will quote, programme and cast.