On-Grid Inverters

On-Grid Inverter Solutions for Installers

sun.store is a B2B marketplace built for professional installers who need a dependable inverter supply chain and clear data to bid, design, and deliver. Here you can compare grid tie inverter options from multiple suppliers side-by-side, check in-stock visibility, and streamline procurement without chasing quotes across tabs. Search by phase, MPPT count, voltage window, or power class to find the right on-grid inverter for each PV job—from compact residential to complex commercial rooftops. Competitive pricing, transparent specs, and downloadable inverter datasheet files help you move from design to order fast, with fewer callbacks and cleaner commissioning.

Grid-Tie Inverter Types

sun.store is a B2B marketplace built for professional installers who need a dependable inverter supply chain and clear data to bid, design, and deliver. Here you can compare grid tie inverter options from multiple suppliers side-by-side, check in-stock visibility, and streamline procurement without chasing quotes across tabs. Search by phase, MPPT count, voltage window, or power class to find the right on-grid inverter for each PV job—from compact residential to complex commercial rooftops. Competitive pricing, transparent specs, and downloadable inverter datasheet files help you move from design to order fast, with fewer callbacks and cleaner commissioning.

Three-phase Inverters

A three-phase inverter suits small to large commercial services and any site with a 3-phase grid connection. It balances phase loads, supports longer strings at higher DC voltage, and enables efficient AC coupling to building distribution. For carports, warehouses, and schools, a 3-phase solar inverter simplifies interconnection and typically offers more MPPTs, which reduces mismatch across multiple roof planes. When designing PV strings, confirm the minimum/maximum operating voltage against winter lows and summer highs to keep the inverter within its safe window.

Single-phase Inverters

A single-phase inverter fits detached homes, small offices, and light commercial units where service is single-phase. It is straightforward to install, often lighter, and pairs well with short string runs. Use rapid-shutdown-ready models when the jurisdiction requires it, and check grid compliance with the local utility rule set. For homes with future storage plans, select inverter models designed to coordinate with batteries or AC-coupled systems; this keeps options open without over-specifying today.

Transformerless Inverters

A transformerless inverter offers high inverter efficiency and lower weight—useful on pitched roofs and projects with tight mounting limits. These inverter designs rely on electronics rather than a galvanic transformer to manage isolation, so correct earthing and RCD selection are essential. For metallic rooftops, confirm the manufacturer’s guidance on grounding, leakage current limits, and compatible protection device selections. Many on-grid inverter units in this class integrate Type II SPDs and arc-fault functions to support safer operation.

Power Capacity Options

Residential (≤ 5 kW)

Typical arrays: ~3–5 kW DC using 1–2 strings of solar panel modules. A 1- or 2-MPPT inverter is usually sufficient; split strings by orientation (e.g., east/west) to avoid mismatch. Confirm anti-islanding requirements and RSD hardware. For residential solar inverters, select models with app-based inverter monitoring so homeowners and O&M teams can track performance.

Light Commercial (6–15 kW)

Ideal for small shops and offices. Expect 2–3 MPPTs to segregate roof faces or partial shading. A single-phase inverter may still apply in some regions; otherwise step up to three-phase inverter models for smoother interconnection. Keep string voltages near the efficiency sweet spot of the inverter and verify breaker sizing and cable ampacity.

Medium Commercial (16–50 kW)

This range fits mid-size rooftops and carports. Choose on-grid inverter models with 3–6 MPPTs to manage multiple sub-arrays. String lengths often run longer; check open-circuit voltage at the coldest design temperature. For commercial solar inverters, plan combiner placement, SPD coordination, and monitoring gateways early to simplify commissioning.

Large Commercial & Industrial (51–100 kW)

Multiple high-power three-phase inverter units or a centralized approach can work. Optimize feeders and protection coordination with the facility’s switchgear. Consider modules with higher current; confirm the inverter input limits and MPPT current ratings. Stagger start-up and ramp rates to align with utility expectations.

Utility-Scale (> 100 kW)

Projects may use string blocks aggregated at medium voltage. Prioritize inverter models with robust inverter certifications and documented grid compliance (e.g., reactive power and ride-through capabilities). Design for uniform PV block replication, clear O&M access, and SCADA-ready communications.

Top Brands of On-Grid Inverters on sun.store

Installers commonly source solar inverter lines from global manufacturers such as Huawei, Sungrow, SMA, Fronius, GoodWe, Growatt, and Solis. These brands are known for dependable inverter hardware, broad inverter warranty frameworks, and mature monitoring ecosystems that integrate fleet-level insights. Many maintain European service networks and publish comprehensive inverter documentation, which helps with approvals and handover. Keep selections generic until submittals—then match firmware features, MPPT counts, and accessories to the site needs. When you buy solar inverter equipment through a marketplace, you keep optionality across models and suppliers while standardizing on your preferred commissioning workflow.

Critical Technical Features

Input window & MPPTs: Confirm operating voltage and the number of MPPTs relative to roof facets and shading. More MPPTs give flexibility; ensure per-MPPT current limits match solar panel strings.

Efficiency & thermal design: Look for max inverter efficiency and robust derating behavior at high ambient temperatures. Heatsink and airflow matter on hot roofs.

Grid compliance: Select models designed to meet regional codes (e.g., EN 50549). Check reactive power, frequency-watt, and ride-through settings.

Protections: DC and AC SPDs, AFCI, and ground-fault monitoring reduce risk. Ingress ratings like IP65 support outdoor mounting.

Communications & monitoring: Ethernet/RS-485/Wi-Fi and platform apps help O&M. Fleet dashboards and APIs streamline service calls with your solar inverter supplier.

Expandability: Some inverter families coordinate with storage; plan wiring space and breaker capacity if a battery retrofit is likely.

Documentation: Ensure quick access to manuals and the inverter datasheet for permitting, design, and QA.

Solutions for Installation Professionals

sun.store supports bulk ordering across multiple suppliers, custom quotes for project bundles, and coordinated delivery windows. You can shortlist inverter candidates, compare prices and lead times, and export spec summaries for submittals. Each listing links to the inverter manual, certificates, and accessories—useful for due diligence and AHJ reviews. There is no dedicated technical support or formal training program; however, our team can clarify product features and answer questions about inverter features during selection to help you choose the right solar inverter for the scope.

Certifications and Safety Standards

Look for models designed to meet IEC 62109 (safety) and EN 50549 (grid connection), alongside national utility codes. For harsh sites, prefer IP65 enclosures, coated PCBs, and integrated SPDs. Arc-fault detection, ground-fault supervision, and rapid-shutdown compatibility help satisfy inverter safety features required by many authorities. For projects requiring documented conformity, select certified inverters and keep certificates on file with the AHJ. These practices apply across residential solar inverters and commercial solar inverters alike.

Support and Resources for Installers

Every product page on sun.store provides transparent access to detailed inverter documents so you can verify MPPT limits, conductor sizes, and grid tied solar system settings before ordering. While we do not offer dedicated technical support or training, we can answer product-selection questions promptly and help you compare inverter alternatives across suppliers. Use these resources to standardize your inverter choices, reduce site time, and deliver consistent PV outcomes across portfolios—whether you’re specifying a hybrid grid tie inverter roadmap, a transformerless inverter for a lightweight roof, or the next fleet of on-grid inverter units for a regional roll-out.