FRENNL

Electrical work for buildings

We fit out your offices, warehouses and shops with power and low-current systems. We organise the work around your opening schedule.

Request a quoteSpeak to a business manager
of warehouse fitted out on a single project
6 000 m²
smart lighting with dimming
LED
voice, data and image cabling, networks and fibre
VDI

What we do

From the incoming supply to the network socket, we deliver the complete electrical package for your building.

  • Power systems

    We distribute power in your offices, warehouses, shops and buildings open to the public.

    • Connections under the French tarif jaune supply contract
    • Switchboards and distribution
    • Sockets and power supply to equipment
    • Installations suited to buildings open to the public

  • LED lighting

    We install new lighting or replace your existing lighting with smart LED fittings that use less energy.

    • LED fittings for offices and warehouses
    • Presence detection and dimming
    • Lighting control by zone
    • Emergency lighting

  • VDI cabling and networks

    We prepare your building for voice, data and video.

    • VDI cabling for workstations
    • Fibre optic links
    • Patch cabinets with UPS
    • Labelling and testing of links

  • Fire alarms and gas detection

    We install the systems that protect the occupants of your premises.

    • Type 4 fire alarms
    • Gas detection
    • Testing at commissioning
Open-plan office with LED lighting built into the ceiling

Why entrust us with your buildings

A commercial building project often comes down to the schedule. We coordinate our package with the other trades.

  • Safety first

    Our electricians are authorised and trained for work at height and aerial work platforms. Every job has its prevention plan.

  • An in-house design office

    We produce the drawings, calculations and as-built documentation. You receive a complete file at handover.

  • Your business keeps running

    On occupied sites, we organise the work by zone. We schedule power cuts with you to limit disruption.

  • One point of contact

    A business manager handles both power and low-current systems. They coordinate our package with the other contractors.

How your project runs

Six stages, with the same business manager from drawings to maintenance.

  1. Visit

    We visit your premises or study the drawings of the new building.

  2. Design

    Our design office sizes the installations and produces the drawings.

  3. Pricing

    You receive a detailed quote and a schedule coordinated with the other trades.

  4. Installation

    Our teams install power and low-current systems, zone by zone on occupied sites.

  5. Handover

    We carry out testing, network certification and the as-built documentation.

  6. Maintenance

    A maintenance contract keeps your installations compliant and reliable.

Our commercial building projects

For confidentiality, we describe the type of site rather than naming the client.

Mise en valeur des bâtiments par l'éclairage

Local authorities

Converting a 9,500 m² brownfield site into a range of visitor facilities

Avesnes area, 2026

Context
Refurbishment and reorganisation of several spaces, including a restaurant, accommodation, a cycle-tourism hub, a tourist office and a cultural venue. The main aim of the project is to boost the area's appeal to visitors.
Work carried out
Five electricity metering points, complete power and low-current distribution, lighting of the interiors and façades. Installation of intruder alarm, CCTV, access control, video door entry and fire alarm systems.
9 500 m²Complete site refurbishment
Site photo coming soon

Logistics

Full electrical works for a warehouse extension

Douai area, 2025

Context
A logistics warehouse was expanding by 6,000 m² and needed a new electrical supply and fitted-out offices.
Work carried out
240 kVA medium-power grid connection, main switchboard, 300 m² of offices, dimmable LED lighting, type 4 alarm and hydrogen detection.
6 000 m²of warehouse fitted out
Site photo coming soon

Retail

Electrical works for a new retail unit

Nord department, 2025

Context
A new retail unit needed to be fitted out before opening, on a tight schedule.
Work carried out
Main switchboard, IT cabinet with UPS and store lighting.
1store opened on schedule

All our projects

Your questions

Can you work in occupied premises?

Yes. We organise the work by zone and schedule power cuts with you to limit disruption.

Can you meet the opening date of a shop?

We build the schedule around your opening date. We coordinate our package with the other contractors on site.

Is switching to LED lighting worthwhile?

LED lighting with detection and dimming uses less energy and needs less maintenance. We study your installation before proposing a solution.

Do you offer maintenance contracts?

Yes. We agree with you the visit frequency and the equipment covered: switchboards, emergency lighting and alarms.

Our other areas of expertise

Electrician, automation technician, business manager?

Join a team working on varied industrial projects close to home.

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