Micro-Inverters

Micro-Inverter Solutions for Installers

sun.store functions as a professional B2B marketplace providing installers and EPC companies with access to a wide range of micro-inverters from verified European suppliers. The platform enables direct product comparisons across multiple brands, streamlining procurement for installers seeking reliable solar inverters for new or retrofit projects.

Each listing includes detailed technical documentation such as datasheets, wiring diagrams, and certifications, helping professionals assess compatibility and performance. The marketplace also supports bulk orders, delivery coordination, and supplier verification to ensure consistent sourcing quality. Through its transparent interface, sun.store simplifies the process of finding, evaluating, and purchasing micro-inverters suited to diverse project requirements.

Micro-Inverter Advantages

Micro-inverters offer a range of performance and operational advantages that distinguish them from conventional string-based systems:

Individual panel optimisation: Each solar micro inverter manages its module’s output independently, preventing underperformance in one panel from affecting others.

Module-level monitoring: Installers can access real-time monitoring for each module, simplifying diagnostics and system maintenance.

Increased energy yield: Systems maintain high efficiency even under partial shading or varying tilt conditions.

Improved safety: Low-voltage DC operation reduces the risk of electrical faults and arc-related incidents.

Simplified scalability: Systems can easily expand by adding more solar panels with micro inverters, without redesigning the overall layout.

These benefits make micro-inverters ideal for residential micro-inverter systems (1–20 modules) and commercial micro-inverter setups (up to 50 modules), where flexibility, reliability, and ease of installation are essential.

Types and Key Technical Features

Two main categories define modern micro-inverters:

Single-input micro-inverter: Supports one module per unit, typically used in residential installations for optimal panel optimisation and module-level control.

Multi-input micro-inverter: Designed for two or more modules per unit, these models are common in commercial projects, improving cost efficiency while maintaining robust performance.

Key technical features to consider include:

Rated input power: Compatible with the latest high-output panels, typically up to 500 W.

Maximum efficiency: Usually between 96–97%, depending on model and conditions.

Output voltage: Matched to local grid standards for grid compliance.

Integrated communication: Wi-Fi, PLC, or Zigbee options for remote monitoring.

Safety protections: Including arc fault detection, anti-islanding, and ground-fault monitoring.

Durability: IP67 or IP68-rated weatherproof inverter casings for outdoor resilience.

Warranty: Extended manufacturer coverage for long-term reliability.

Together, these features support consistent energy production, long system life, and compliance with all relevant standards.

Supported System Sizes

Residential Installations (1–20 modules)

Compact micro-inverters are well-suited for home rooftops or self-consumption projects. Using single-input micro-inverters ensures high efficiency, improved shade tolerance, and easy expansion as energy needs evolve.

Small Commercial Installations (up to 50 modules)

For small businesses or institutions, commercial micro-inverters enable precise module-level monitoring, simplified maintenance, and fault isolation. They are especially effective where rooftops have irregular shapes or varying panel orientations.

When to Choose Micro-Inverters for Installations of 50+ Modules

Although feasible for larger installations, micro inverter sizing and cost must be carefully evaluated. They are best applied where scalability or shading issues make string inverters less practical. For large-scale projects, a hybrid approach combining micro-inverters and string inverters may offer an optimal balance between performance and investment.

Top Micro-Inverter Brands Available

sun.store features leading global solar inverter manufacturers recognised for innovation and reliability:

Enphase micro-inverters: Known for advanced communication systems, high efficiency, and strong network integration.

Hoymiles micro-inverters: Favoured for robust design, cost efficiency, and compatibility across various PV module types.

APsystems micro inverters: Praised for flexible micro inverter scalability and comprehensive grid compliance features.

All models include detailed datasheets, certifications, and warranty documentation, ensuring installers have access to verified technical information before procurement.

Installer-Focused Services

sun.store supports installation professionals by simplifying sourcing and logistics for micro-inverters and related PV components. Services include:

Bulk purchasing and tailored quotations for project-specific needs.

Delivery coordination across Europe with trusted logistics partners.

Access to datasheets, wiring diagrams, and compliance records.

Direct comparison of features, voltage, and cost between models.

These tools enable efficient project planning and consistent system quality across multiple installations.

Certifications and Grid Compliance

All micro-inverters available through sun.store comply with major international standards such as IEC 62109 and EN 50549, ensuring grid compliance and electrical safety. Models are tested for electromagnetic compatibility (EMC) and adhere to fire and environmental protection standards. Many also include safety mechanisms such as arc fault detection, surge suppression, and robust weatherproof inverter designs. Manufacturer warranty terms further guarantee long-term durability and certified performance.

Support and Resources for Installers

sun.store provides open access to a library of product information and technical documentation. Each listing includes downloadable datasheets, installation guides, and certifications. Installers can compare solar panels with micro-inverters built in or standalone mini inverters, ensuring the right match for each system design.

While no dedicated training programme is currently available, sun.store’s specialists are available to clarify specifications, features, and compatibility. This ensures that every micro-inverter purchase supports professional, efficient, and compliant system integration.