Solar Inverters — On-Grid, Off-Grid and Hybrid Options
The inverter is the brain of your solar system, converting DC panel output into usable AC power and managing how energy flows through your installation.
Converting Solar DC Power Into Usable AC Electricity
A solar inverter converts the direct current (DC) electricity generated by your panels into the alternating current (AC) electricity used by household and business appliances. Beyond this core conversion, the inverter also manages critical functions like maximising power extraction from your panels under varying sunlight (via MPPT — Maximum Power Point Tracking), synchronising with grid voltage and frequency for on-grid systems, managing battery charge/discharge for hybrid systems, and providing safety protections against faults. The inverter type you choose — on-grid, off-grid, or hybrid — is determined by your system type, covered in more detail on our respective solution pages.
Product Categories
On-Grid Inverters
Synchronise with the utility grid for net metering; the most common and cost-effective choice for grid-connected properties.
Off-Grid Inverters
Draw power from a battery bank to run loads independently, with no grid connection required.
Hybrid Inverters
Intelligently manage solar, battery and grid inputs together, enabling backup power for essential loads.
String Inverters
A common architecture where multiple panels are wired in a 'string' into a single central inverter unit.
How It Works
DC electricity from your solar panel array reaches the inverter through DC input terminals. Internal MPPT controllers continuously adjust the electrical operating point to extract the maximum possible power from the panels as sunlight conditions change throughout the day. The inverter's power electronics then convert this DC into clean AC power matched to your local grid's voltage and frequency (for on-grid/hybrid units) or directly usable by connected appliances (for off-grid units).
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What Makes This Product Reliable
Specification Overview
Indicative ranges — exact specifications vary by selected brand and model.
| Specification | Typical Range | What It Means |
|---|---|---|
| Inverter Efficiency | 96% – 98.5% | Percentage of DC input power successfully converted to usable AC |
| MPPT Channels | 1 – 4 (varies by capacity) | More channels allow panel strings with different orientations |
| Operating Temperature Range | -25°C to 60°C (typical) | Range within which the inverter performs reliably |
| Protection Rating | IP65 (outdoor-rated models) | Indicates dust and water resistance for outdoor mounting |
| Product Warranty | Typically 5 – 10 years | Coverage period varies by manufacturer and model tier |
| Monitoring | WiFi/GSM app connectivity (most models) | Enables remote generation tracking from your phone |
Available Capacity Options
| Capacity / Model Range | Typically Suitable For | Notes |
|---|---|---|
| 1 kW – 5 kW | Residential rooftop systems | Single-phase, typically wall-mounted |
| 5 kW – 25 kW | Larger homes and small commercial | Often single or three-phase depending on connection |
| 25 kW – 100 kW | Commercial, industrial and society installations | Three-phase, higher current handling capacity |
| 100 kW+ | Large industrial and factory systems | Central inverter architecture, engineered per site |
How to Choose the Right Option
Inverter selection starts with your system type (on-grid, off-grid or hybrid), then capacity is matched closely to your total panel array size — an undersized inverter clips available power, while an excessively oversized one adds unnecessary cost. For roofs with multiple orientations or partial shading on different sections, look for inverters with multiple MPPT channels so each string can be optimised independently. Our design team specifies inverter capacity and MPPT configuration as part of your system design, matched precisely to your chosen panel array.
Compatibility Information
Inverters are selected to match your panel array's voltage and current output range, as well as your property's electrical connection type (single-phase or three-phase). For hybrid systems, the inverter must also be compatible with your chosen battery chemistry and communication protocol — our team verifies this compatibility during system design.
Warranty Information
Inverter product warranties typically range from 5 to 10 years depending on the manufacturer and model tier, generally shorter than panel warranties since inverters contain more active electronic components. Extended warranty options are available from some manufacturers for an additional cost.
Maintenance Information
Inverters benefit from periodic visual inspection, cleaning of ventilation areas (for fan-cooled models), and a check of error logs or fault history. Most issues are flagged early through the monitoring app, allowing proactive servicing before a full failure occurs.
Buying Considerations
Compare efficiency ratings, warranty length, MPPT channel count relative to your roof layout, and the manufacturer's local service network — a slightly higher upfront cost for a well-supported brand often pays off in reduced downtime and easier warranty claims over the system's life.
Common Use Cases
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Solar Inverters — Frequently Asked Questions
On-grid inverters synchronise with the utility grid and shut down during outages for safety; off-grid inverters draw only from batteries with no grid connection; hybrid inverters intelligently manage solar, battery and grid together.
MPPT (Maximum Power Point Tracking) continuously adjusts the inverter's electrical operating point to extract the maximum possible power from your panels as sunlight and temperature change throughout the day.
Inverter capacity is generally matched closely to your total panel array size (kW); our design team calculates the appropriate match during your system design process.
Standard on-grid inverters shut down during a grid outage for safety (anti-islanding protection). Hybrid inverters can continue powering designated essential loads from a connected battery during an outage.
Most modern inverters connect via WiFi or GSM to a mobile app showing real-time and historical generation data, and can alert you to faults or underperformance.
Inverters are generally expected to last 10 to 15 years with proper maintenance, though this varies by brand, usage conditions and whether a replacement of internal components (like cooling fans) is needed during the system's life.
Higher efficiency reduces conversion losses, but should be weighed alongside price, warranty, MPPT configuration and brand support — the 'best' inverter depends on your specific system and budget.
This depends on your existing inverter's spare capacity and MPPT channels; in many cases, a system expansion requires either inverter capacity headroom or an additional inverter — assessed during a design review.
Look for over-voltage, over-current and short-circuit protection, anti-islanding for grid-tied units, and an appropriate IP rating if mounted outdoors.
A hybrid inverter integrates solar, battery and grid management into a single unit with coordinated control logic, generally offering smoother, more reliable switching than retrofitting a separate charger to an existing on-grid inverter.
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