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Full-black panels on a single-storey house
Full-black panels in landscape rows across the roof of a single-storey house, laid around its two chimneys.
- Solar panels · Full black
Solar · Storage · EV charging
The future is electric.
Your roof is where it starts.
We design and install solar panels, home batteries and EV chargers for homes across Belgium — sized for how you actually use energy, not for the biggest invoice.
- years of experience in Europe
- customers
Brands and certifications
Brands we install
- Solar panels
- Inverters
- Batteries
- Smart meters
- Mounting systems
Certified installer
- RESCERT 4508Solar PV installer
- RESCERT 4509Heat pump installer
- VCASafety, health and environment on site
How it works
From roof to socket, one system that thinks for itself
Scroll through a DELEX installation, one component at a time.
01 — Your home
It starts with a roof survey
Orientation, pitch, shade from chimneys or trees, the state of the roof and your consumption profile. We visit, measure and design the layout panel by panel — smart roof design is where most of the yield is won or lost.
- Site visit
- Free
- Design
- Panel-by-panel
02 — Solar panels
Panels that turn daylight into savings
High-efficiency monocrystalline panels, mounted on a certified aluminium system and wired to minimise shading losses.
- Panel power
- 430–460 Wp
- Product warranty
- Up to 25 years
03 — Inverter
The inverter makes it usable
A DC cable runs from the panels to the inverter on the wall, which converts direct current into the alternating current your home uses. A hybrid inverter is ready for a battery from day one — so you can add storage later without starting over.
- Type
- Hybrid, 1- or 3-phase
- Efficiency
- ≈ 98%
- Monitoring
- App, real-time
04 — Battery & smart meter
Store the sun, read every watt
Batteries next to the inverter store your daytime surplus for the evening. A smart power meter in your main electrical panel measures what flows to and from the grid, so the system charges, discharges and limits peaks automatically — useful with Flanders' capacity tariff.
- Battery capacity
- 5–20 kWh, modular
- Smart meter
- In the main panel
- Peak shaving
- Automatic
05 — EV charging
Your car runs on your roof
A smart charger by the driveway charges your electric car with the surplus of your panels first, and shares the power with the rest of the house so your grid connection is never overloaded.
- Charging power
- Up to 11 kW
- Solar mode
- Charges on surplus
- Load balancing
- Dynamic
What we install
Three building blocks, designed to work together
01Solar panels
Design and installation of photovoltaic systems, sized for your roof and your consumption.
Solar panels
02Home batteries
Keep your own solar energy for the evening and reduce your peak consumption from the grid.
Home batteries
Projects
Installations we are proud of
A few of our installations: full-black panels on homes and business roofs, inverters and batteries in technical rooms.
See all projects
Home
A mansard roof covered with full-black panels
Full-black panels in portrait cover the slope of the mansard roof of a brick corner house, with the DELEX van in front.
- Solar panels · Full black
Business
Rows of panels on ballasted frames on a flat roof
Long rows of full-black panels on low frames held down by concrete ballast, on the flat roof of a commercial building with rooflight domes.
- Solar panels · Full black
Why DELEX
A family business that tells you what you need — and nothing more
- 01
Honest advice, no upselling
If a battery does not pay off for you yet, we will tell you. Our quotes are sized for your consumption, not for our margin.
- 02
Led by an installer
DELEX is independent and led by an installer with more than ten years on Belgian roofs. The person who designs your system knows how it is built.
- 03
Smart roof design
Every layout is drawn for your roof: orientation, shade and the cleanest cable route to your inverter.
- 04
Attention to detail
Tidy cabling, labelled boards, a clean site and a full walkthrough of your app on handover day.
Free simulation
What could your roof earn you?
A few short questions, no obligation. You see right away how many panels suit your home, what they produce and what you save, and you receive the estimate by e-mail.
- Production and savings for your roof
- Sized with the rules of our quotes
- Your estimate by e-mail, no obligation
Reviews
What our customers say
Real reviews from our customers on Google. What comes back: a careful, neat installation, a sharp price next to other quotes, and follow-up right through the inspection.
Average rating: 4.8 out of 5
Based on 55 reviews on Google
As shown on Google on October 22, 2026
- Google review
“Voor Delex te hebben gevonden waren al veel zonnepaneel installatiebedrijven langs geweest. Telkens konden ze me niet overtuigen met hun voorstel. Bij het voorstel van Delex heb ik ja gezegd en ik heb hier nog geen moment spijt van gehad. Na een klein probleem met de planning (omvormer was niet op tijd binnen) is de installatie zeer netjes gebeurd (zelden zo professioneel afgewerkt gezien). De elektrische keuring daarna was ook perfect in orde. Zeker een aanrader!”
Yannick V. · Original in DutchView on Google Maps (Yannick V., opens in a new tab) - Google review
“In maart 2024, 17 panelen laten leggen verdeeld over 2 zijden en een 10Kw batterij laten plaatsen van Huawei. Korte levertijd na akkoord, 2-3 weken en professionele installatie. Na 2 weken nog een 5kw batterij bij laten plaatsen, 3dagen lvt, top! De keurings instantie House Check vond het ook super geïnstalleerd! Eigenaar en installateurs zijn van origine Roemeens, maar super mensen. Vriendelijk, open en snel in reageren. Prijs is beste van 4 aanbiedingen en dan nog eens met 4k verschil met de goedkoopste. Ik zou ze zeker bij een volgende installatie weer laten komen. Een super tevreden klant!”
Maikel K. · Original in DutchView on Google Maps (Maikel K., opens in a new tab) - Google review
“Delex = betrouwbaar bedrijf! Professionele service, offerte snel gekregen na aanvraag. Er wordt rekening gehouden met de noden van de klant. Scherpe prijs. Panelen geplaatst dag na acceptatie van de offerte. Snelle service. Goede opvolging van de installatiekeuring en het overmaken van de nodige documenten voor de aanmelding bij Fluvius. Gedetailleerde uitleg op papier welke stappen de klant moet ondernemen om z'n aanvraag in te vullen voor de premie. En ook een persoonlijke uitleg over applicatie van de zonnepanelen. Een aanrader! Baas Robert en zijn vertegenwoordigster Inge aan de top👌🏻.”
Virginie V. · Original in DutchView on Google Maps (Virginie V., opens in a new tab) - Google review
“Inmiddels twee installaties laten leggen door Delex. Van de vertegenwoordigster tot de werkmannen op het dak, één voor één professioneel en bekwaam. Werken zeer efficiënt en ordelijk. Speciaal zitten zoeken naar een andere mogelijkheid om geen kabels te hoeven zien op de gevels. Probleem met de installatie van de omvormer door gebrek aan neuter onmiddellijk opgelost door naar hun loods te rijden en een ander type te installeren. Kortom, een zeer tevreden klant.”
Sven M. · Original in DutchView on Google Maps (Sven M., opens in a new tab) - Google review
“super vriendelijk team, scherpe prijzen, snelle installatie... super tevreden”
Katia V. · Original in DutchView on Google Maps (Katia V., opens in a new tab)
A selection of our reviews, quoted word for word from our Google Business Profile. Each one opens the original on Google Maps, where you can read all our reviews.
Let's look at your roof together
Tell us a little about your home and we will get back to you within two working days with honest advice.