The SMA Sunny Boy is the most widely deployed single-phase string inverter in the residential market: simple, robust and recognised for its longevity. wendows sizes, installs and commissions it, then remains your point of contact for monitoring, warranty and after-sales support.
The Sunny Boy covers a wide range of single-phase power ratings. Here are the configurations we install most often in Belgium, sized to your roof and your consumption.
The string inverter par excellence for the home on a single-phase connection: a single unit converts the output of all the panels. Simple and reliable.
If your home is on a three-phase connection or for higher power ratings, the Sunny Tripower takes over. The right choice is made according to your grid.
Depending on the range, the Sunny Boy can pair with a Home Storage battery to boost self-consumption. The pairing is scoped at the study.
The Sunny Boy's output is tracked via Sunny Portal and the SMA Energy app: real time, history and alerts for remote diagnostics.
Beyond the brand, it is the robustness of the single-phase string inverter that makes its reputation. The benchmarks specific to the Sunny Boy, commissioned by our teams.
The Sunny Boy is a single-phase string inverter: a single unit converts the current of all the panels. A simple, robust architecture that is easy to supervise.
The Sunny Boy range covers the single-phase power ratings of the residential market, which matches almost any single-family home roof in Belgium.
The stated conversion efficiency is high. The exact value depends on the model and on the sizing relative to the power of the installed panels.
Manufacturer warranty on the inverter, often extendable depending on the model. wendows handles the liaison and the intervention when needed.
Web and mobile supervision included: output, history and alerts. The software component that makes the installation legible and eases remote support.
Depending on the version, the Sunny Boy pairs with the Home Storage battery to boost self-consumption. The pairing is scoped at the time of the study.
* Valeurs indicatives selon la gamme et la configuration. Les performances et garanties exactes dépendent du modèle, du vitrage et des dimensions — confirmées lors du métré.
An inverter well sized against the panels delivers the best efficiency. Our teams calculate, wire and commission the Sunny Boy to the manufacturer's rules, then handle monitoring, warranty and after-sales support directly.
The single-phase string inverter suits most homes, but not all. Depending on your grid and your roof, another approach may suit better. Compare, then we decide at the study.
An overview of the SMA ecosystem: Sunny Boy, Sunny Tripower, Home Storage and monitoring, to place the single-phase inverter.
See the SMA range → vs Sunny BoyThe three-phase counterpart of the Sunny Boy, for three-phase homes or higher power ratings. The choice is made according to your grid.
See the Sunny Tripower → vs Sunny BoyOne micro-inverter per panel rather than a central inverter: useful on shaded or complex roofs, where string loses efficiency.
See the micro-inverter → to combineThe hybrid inverter handles solar and battery in a single unit. A logic to compare with the Sunny Boy + Home Storage pair.
See the hybrid inverter → to combineThe battery that complements the Sunny Boy to boost self-consumption. To be scoped right from the study according to your consumption.
See Home Storage → overviewPointers on the complete photovoltaic installation, from panel to commissioning, to frame a Sunny Boy-equipped project.
See solar panels →For a single-family home on a single-phase connection, the Sunny Boy is often the simplest and safest choice. It is the benchmark string inverter: a single unit converts the output of all your panels, with a reputation for robustness built over decades.
Its string architecture shines on open roofs, with no marked shading. On complex roofs — several pitches, partial shading — other approaches such as the micro-inverter can recover more efficiency. It's a trade-off we work out together at the study.
"On an open roof, the string inverter is simple and sound: a single unit, years of silent output.
This is where our role as installer counts. We size the Sunny Boy against your panels, commission it via Sunny Portal and remain your single point of contact for warranty and after-sales support. The monitoring helps us intervene remotely as soon as an alert comes through.
A high conversion efficiency. Across the Sunny Boy range, little energy is lost between the panels and your distribution board — the exact value depends on the model and the sizing.
On budget, the Sunny Boy sits in the reliable, recognised-component segment. The difference comes mainly down to the power chosen. To frame your project, start from our solar panel pricing page, then request a costed quote.
The price depends mainly on the power chosen and on whether a battery is added — not just on the brand. Here are starting ranges for a Sunny Boy installed by our teams.
See solar panel pricing →* Indicative ranges, excluding specific configurations and excluding panels. A precise, costed estimate is provided with your free quote.
The Sunny Boy is a single-phase inverter: it suits the majority of single-family homes on a single-phase connection. If your home is three-phase or for higher power ratings, the Sunny Tripower takes over. We check your grid at the study.
String performs best on open roofs, with no marked shading. On complex or shaded roofs, a micro-inverter recovers more efficiency. We decide according to your roof during the survey.
Depending on the version, the Sunny Boy pairs with a Home Storage battery to boost your self-consumption. If storage is part of the project, we scope compatibility and sizing at the study.
Via Sunny Portal and the SMA Energy app: real-time output, history and alerts. The monitoring also lets us diagnose remotely and respond quickly for after-sales support.
Depending on the model, the manufacturer warranty can run up to 10 years, often extendable. wendows handles the liaison and the intervention. The exact terms are stated on your quote.
Expect from around €1,200 for an installed single-phase Sunny Boy, depending on the power. A battery-ready hybrid version starts around €1,800. Grants and 6% VAT deducted afterwards.
Free on-site survey, recommended range, grants calculated, a single point of contact. Describe your project in under a minute.