« Devis clair, sans surprise, primes comprises. Un seul interlocuteur du début à la fin. Je recommande sans hésiter pour le photovoltaïque. »
Pierre M.Tournai
Solar panels · Inverter
Solar inverter: the brain of your photovoltaic installation
Without an inverter, your panels produce unusable direct current. The inverter converts it into 230 V alternating current for your home, optimises production in real time and monitors every kilowatt-hour. String, micro-inverter or hybrid: the choice depends on your roof and your plans.
- 96–98%
- efficiency
- 10–15 years
- warranty
- String · micro · hybrid
- 3 types
96–98% efficiencyDC → AC conversion
Monitoringreal-time app
Technical specifications
What a solar inverter is really worth
The inverter is the centrepiece of your installation. Here’s what matters.
- Efficiency 96–98%
Conversion efficiency (DC to AC) reaches 96 to 98% on recent models. The remaining 2 to 4% are unavoidable thermal losses.
- String type Central
One inverter for the whole string of panels. Simple, reliable and economical. Ideal for a homogeneous roof (same orientation, no shade).
- Micro-inverter Per panel
A small inverter under each panel. Each one produces independently: if a panel is shaded, the others are unaffected. More expensive, but optimal on a complex roof.
- Hybrid Battery-ready
The hybrid inverter manages panels, battery and grid. It unlocks the backup function (power during outages). The centrepiece of storage.
- MPPT 1 to 2+
The number of MPPT trackers determines how many panel orientations the inverter manages independently. Two pitches = 2 MPPT minimum.
- Lifespan 10–15 years
The inverter lasts less long than the panels (25–30 years). Plan for a mid-life replacement. The warranty covers 10 to 15 years depending on the brand (extendable).
* Indicative values for mainstream inverters. The exact model is chosen based on the output and the configuration.
In full transparency
String, micro or hybrid — how to choose?
The type of inverter depends on your roof and your plans (battery, backup).
String (the most common)
- The most economicalA single device for the whole installation — minimal cost.
- Reliable and provenThe most installed technology, with a long track record of reliability.
- Simple to replaceA single device to swap at end of life, accessible indoors.
- Ideal for a simple roofOne orientation, no shade: the string delivers the maximum.
Micro-inverter / hybrid
- Micro: each panel independentShading, dirt or a fault affects only one panel.
- Micro: per-panel monitoringYou see each panel’s production — immediate problem detection.
- Hybrid: manages the batteryEssential for storage and the backup function.
- Hybrid: scalableYou can add a battery later without changing the inverter.
For which configuration
Which inverter for your roof?
The roof guides the choice as much as the budget. Three common situations:
-
Simple roof, one orientation
A string inverter with 1 or 2 MPPT is enough. It’s the most economical and the most common in Belgium.
-
Complex or shaded roof
Micro-inverters or optimisers: each panel produces independently, so one panel’s shading doesn’t affect the others.
-
Project with a battery
The hybrid inverter manages panels, battery and grid as one. Essential for backup.
Inverter or optimisers?
The optimisers combine with a string inverter for a compromise between the two approaches. And for storage, see the solar battery.
Glissez la poignée pour comparer
Real case · inverter replacement, Liège
A string inverter replaced by a hybrid, battery added
An 8-year-old string inverter had failed. Rather than replacing like for like, the customer opted for a hybrid and a 10 kWh battery. The result: higher self-consumption and backup power on the priority circuits.
- Hybridreplaced in half a day
- +35 ptsself-consumption
- Backupon key circuits
Customer reviews
They chose wendows
5.0/5 · 1verified reviews
Compare the types
String, micro-inverter or hybrid?
The table to choose the type of inverter suited to your installation.
| Critère | StringVous êtes ici | Micro-inverterVoir la gamme → | HybridVoir la gamme → |
|---|---|---|---|
| Price | The gentlest | Higher | In between |
| Shading | String affected | Panel by panel | String (+ optim. possible) |
| Monitoring | Overall | Per panel | Overall (+ battery) |
| Battery | No | No | Yes, integrated |
| Backup | No | No | Yes |
| Lifespan | 10–15 years | 20–25 years | 10–15 years |
| Ideal for | Simple roof, budget | Complex roof, shading | Storage, independence |
Indicative benchmarks. The choice depends on your roof and your goals — we fine-tune it at the survey.
- alternative
Optimisers
Combine the advantages of string and micro: per-panel optimisation with a single central inverter.
See the optimisers → - to pair with
Battery
The hybrid inverter drives the battery. Add storage for evening self-consumption.
See the batteries → - all-inclusive
Solar kit
The inverter is included in the kit. We choose the type suited to your roof.
See the kits → - backup
Backup storage
The hybrid inverter with EPS keeps your priority circuits running during outages.
See backup → - the panels
Panel types
N-type, P-type, bifacial: which panel for which inverter.
See the types → - ↑ category
All things photovoltaic
An overview of our solar panels in Belgium.
Back to the solar guide →
Indicative price 2026
How much does a solar inverter cost?
The price depends on the type and the output. The inverter accounts for 15 to 25% of the cost of an installation.
See full solar kit prices →* Indicative ranges for installed hardware. The price depends on the output and the model.
- String inverter 3–6 kW €800–1,500installed, 10-year warranty
- Micro-inverters (6 kWp) €1,500–2,500complete set installed
- Hybrid inverter €1,500–3,000installed, battery-ready
- Warranty extension + €200–40015–25-year warranty
Inverter FAQ
Your questions about the inverter
How long does an inverter last? +
A string inverter lasts 10 to 15 years, a micro-inverter 20 to 25 years. Since panels last 25–30 years, plan for a string inverter replacement at mid-life. The warranty is extendable on most brands.
Do I need a hybrid inverter if I want a battery? +
Yes. The hybrid inverter manages the battery’s charging and discharging. If you’re planning a battery (now or later), choosing a hybrid from the start avoids changing the inverter afterwards.
Where should the inverter be installed? +
Indoors (garage, utility room, cellar) close to the electrical panel. The inverter needs proper ventilation and a moderate temperature. It emits a faint hum during the day.
Does the inverter make noise? +
A faint hum during the day (internal fan). At night, it’s silent. Micro-inverters are completely silent as they’re placed on the roof.
What happens if the inverter fails? +
The installation shuts down (safety: no injection without an inverter). Replacement takes a few hours. Good monitoring detects the fault immediately.
String or micro with slight shade? +
Optimisers on a string inverter offer a good compromise: per-panel optimisation without the premium of full micro-inverters. We assess the shading at the survey to decide.
Get your free inverter quote within 48h
Free configuration study, choice of the right type, incentives calculated. Describe your project in under a minute.
- Free and no obligation
- The right type chosen for your roof
- Installed by our certified fitters