
For general contractors
The power package of your project — in safe hands
We take on the full electrical scope or selected works — cable lines, directional drilling, utility relocation, junctions and substations. With our own plant and documents ready for acceptance.
What a GC needs
A subcontractor you don't have to worry about
A general contractor answers to the investor for the whole project, so above all it needs predictability from a specialist subcontractor: deadlines met, independence on site, knowledge of the network operator's requirements and complete documents that let acceptances close without delay.
We have already completed four referenced contracts for contractors working for network operators: two for ZILINSKIS and two for PIWOWARSKI. The shortest — building 2,350 m of 15 kV cable line in Bolewice — took 18 days, from 25.11 to 12.12.2024. In every reference the client confirmed the works were carried out properly, within the agreed deadlines and without defects.
- Full electrical scope or selected works
- Own excavators, HDD rig, puller and loader crane truck
- Acceptance documents to the operator's requirements

How we work with GCs
What you gain by subcontracting to us
Own plant and crews
No waiting for hired machines. We arrive with a full set of plant for trenching, drilling and cable laying — see our equipment.
Fitting your programme
We plan our works around the stages of the whole project and the outage dates agreed with the operator.
Independent on site
Our works manager runs the electrical package and reports progress to your site manager.
Infrastructure clashes
On road, rail and building projects we relocate clashing MV and LV networks — utility relocation.
Selected specialist works
You can subcontract us for directional drilling only, cable laying only, or jointing and junction installation.
Acceptance documents
Test reports, survey and as-built documentation are handed over ready to slot into your acceptance file.
Services
The scopes most often subcontracted
MV and LV cable lines
Construction, rebuilding and repair of MV 6–30 kV and LV 0.4 kV cable lines: trenching, drilling, cable laying, joints, terminations, testing and handover.
Learn moreHorizontal directional drilling
Horizontal directional drilling and pipe jacking under roads, railways and rivers — ducts for MV, LV and fibre cables. Own Tracto-Technik GRUNDODRILL rig.
Learn moreUtility conflict relocation
Relocating MV and LV networks that clash with roads, railways and new developments: cable diversions, undergrounding, HDD, DSO outages and acceptance.
Learn moreMV/LV substations
Construction of MV/LV transformer substations, ZKSN and LV cable junctions, replacement of pole-mounted units, MV and LV cable connections and testing.
Learn moreFibre-optic ducts
Fibre-optic duct construction: HDPE ducts and microducts, cable chambers, directional drilling under roads and railways. Civil works contractor across Poland.
Learn moreOverhead line undergrounding
Undergrounding of MV and LV overhead lines: new cable line, HDD crossings, ZKSN junctions, switching and removal of the old line, poles included.
Learn moreGetting started
How to start
- 01
Quantities or design
Send us the scope of our package, the electrical design and the expected deadlines.
- 02
Price and schedule
We reply with a quote including price, mobilisation date and the duration of each stage.
- 03
Subcontract
We agree the scope, responsibilities, materials, reporting and partial acceptance arrangements.
- 04
Delivery and acceptance
We carry out the works, report progress and hand over the full set of acceptance documents for our scope.
Projects
Contracts delivered for contractors
Four contracts for ZILINSKIS and PIWOWARSKI — from an 18-day cable line build in Bolewice to the RS Maliniec switching station in Konin.
Toruń — MV 15 kV line undergrounding
Kuyavian-Pomeranian Voivodeship
Konin — RS Maliniec 15 kV switching station
Greater Poland Voivodeship
MV/LV network rebuild — 8 villages
Greater Poland / Lubuskie Voivodeships
Bolewice — MV 15 kV cable line
Greater Poland Voivodeship
„The above works carried out by BIGBUD Sp. z o.o. were performed properly, in accordance with good construction practice, within the agreed deadlines and without defects.”
Questions
Questions from general contractors
Can you take on just part of the scope?
Yes. We deliver the full electrical scope or selected works — for example directional drilling only, cable laying, jointing and terminations, or setting junctions.
How quickly can you mobilise?
That depends on our current workload and the scope. We confirm the mobilisation date in our quote and fix it in the schedule once the contract is signed.
Do you provide materials?
As per the contract — we work with client-supplied materials or deliver them through our equipment supply service.
Who deals with the network operator?
By agreement with you, we take over day-to-day contact with the operator on outages, connections and technical acceptance of our scope.
Where do you work?
Across Poland. So far we have run contracts in the Lubuskie, Greater Poland and Kuyavian-Pomeranian voivodeships; our office is in Kraków.
Looking for an electrical subcontractor?
Send us the bill of quantities or design — we will reply with a price and a mobilisation date.


