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Power networks
MV and LV cable linesBuilding and rebuilding 6–30 kV MV and 0.4 kV LV lines
Overhead line undergroundingReplacing overhead lines with cables
MV overhead lines 6–30 kVPoles, conductors, ties and dismantling
MV/LV substationsKiosk substations, ZKSN and ZK junctions
Technologies and works
Horizontal directional drillingNo digging up roads, railways or rivers
Fibre-optic ductsDucts and conduits for fibre
Utility conflict relocationClearing conflicts with new infrastructure
Equipment supplyCables, fittings, junctions, substations
Renewable energy
Solar farmsFarm MV network and DSO connection
Wind farmsCable and grid-connection infrastructure
QuoteGot a project to price?Send us the scope — we'll reply with a quote and schedule.Request a quote
Projects
ProjectsFive jobs backed by references
1ENEA Operator — MV 20 kV network, NiegosławiceConsortium leader · MV 20 kV
2Toruń — MV 15 kV line undergroundingZILINSKIS · 5,725 m MV 15 kV
3Konin — RS Maliniec 15 kV switching stationZILINSKIS · RS Maliniec 15 kV
4MV/LV network rebuild — 8 villagesPIWOWARSKI · 8 villages
5Bolewice — MV 15 kV cable linePIWOWARSKI · 2,350 m in 18 days
Proof
ReferencesAll letters in full, with PDFs
GalleryPhotos from sites and equipment
ReferenceENEA OperatorMV 20 kV network — BIGBUD as consortium leader.See the project
Who we work for
For distribution system operatorsOperators' investment projects
For general contractorsSubcontracting the electrical scope
For renewable energy investorsSolar and wind farm connections
How we work
How we workStages from enquiry to handover
Safety and qualitySafety and quality control
EquipmentOwn machines and HDD rig
Work with usLooking for a subcontractor?We can take over the full electrical scope or part of it.Let's talk
Company
About usWho we are and how we work
Company detailsKRS, NIP, REGON, address
CareersJoin our crews
ContactPhone, email, form
Knowledge
KnowledgeArticles on MV and LV networks
GlossaryPower-industry terms explained
Contact+48 795 216 920biuro@bigbud.cc · ul. Rybitwy 22/318, KrakówWrite to us

PLEN

Request a quote +48 795 216 920

PLEN

Office+48 795 216 920 Request a quote

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About us

Contact
Request a quote
About us
Company details
Careers

Services

Services
MV and LV cable lines
Overhead line undergrounding
MV overhead lines 6–30 kV
MV/LV substations
Horizontal directional drilling
Fibre-optic ducts
Utility conflict relocation
Equipment supply
Solar farms
Wind farms

Projects

Projects
ENEA Operator — MV 20 kV network, Niegosławice
Toruń — MV 15 kV line undergrounding
Konin — RS Maliniec 15 kV switching station
MV/LV network rebuild — 8 villages
Bolewice — MV 15 kV cable line
References
Gallery

Work with us

How we work
Safety and quality
Equipment
For distribution system operators
For general contractors
For renewable energy investors

Knowledge

Knowledge
Glossary
MV cables: XRUHAKXS and NA2XS(F)2Y
Why operators underground MV lines
How directional drilling works
Inside an MV/LV substation
Connecting a solar farm to the MV grid
From design to acceptance — building a line

We build and modernise medium- and low-voltage power networks and renewable-energy grid connections for distribution system operators, general contractors and investors across Poland.

+48 795 216 920
biuro@bigbud.cc
ul. Rybitwy 22 lok. 318, 30-722 Kraków

Services

MV and LV cable lines Overhead line undergrounding MV overhead lines 6–30 kV MV/LV substations Horizontal directional drilling Fibre-optic ducts Utility conflict relocation Equipment supply Solar farms Wind farms

Projects

Projects ENEA Operator — MV 20 kV network, Niegosławice Toruń — MV 15 kV line undergrounding Konin — RS Maliniec 15 kV switching station MV/LV network rebuild — 8 villages Bolewice — MV 15 kV cable line References Gallery

Company

About us How we work Safety and quality Equipment For distribution system operators For general contractors For renewable energy investors Careers Knowledge Glossary

© 2026 BIGBUD Sp. z o.o. · KRS 0001117272 · NIP 679-330-46-42 · REGON 529195238

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