Solar monitoring apps in Perth: how to read your data and spot problems

Every solar inverter comes with a monitoring app or web portal. Most Perth solar owners connect their inverter to the home WiFi at installation and then forget the app exists until they suspect something is wrong. Getting familiar with it earlier makes it much easier to spot real problems — and much easier to confirm the system is working as expected.

Here's a guide to the main monitoring platforms and what healthy Perth data actually looks like.

Which app you use depends on your inverter brand

| Inverter brand | Monitoring app | Web portal | |---|---|---| | Sungrow | iSolarCloud | isolarcloud.com | | Fronius | SolarWeb | solarweb.com | | Enphase | Enlighten (MyEnlighten) | enlighten.enphaseenergy.com | | SolarEdge | SolarEdge Monitoring Portal | monitoring.solaredge.com | | Goodwe | SEMS Portal | semsportal.com | | Growatt | ShinePhone / ShineServer | server.growatt.com | | Huawei | FusionSolar | — | | ABB / FIMER | Aurora Vision | — |

Your installer should configure the WiFi connection and create your account at commissioning. If this wasn't done, the inverter manufacturer's website has setup guides for each model.

What to look at in your monitoring app

Daily generation curve

On a clear sunny day in Perth, the generation curve should look like a smooth bell shape:

• Starts rising around 7–8am
• Peaks between 12pm–2pm
• Falls back to zero by 6–7pm (varies by season)

What it tells you: A jagged or irregular curve during an otherwise clear day indicates a potential issue — shading from newly grown trees, a dirty panel, or a partial fault. A smooth curve with lower-than-expected peak is normal on hazy or overcast days.

Generation vs export vs consumption

Most apps show three flows:

• Generation (total solar produced, kWh)
• Self-consumption (solar used directly by the home)
• Export (solar sent to the grid)
• Import (grid electricity drawn into the home)

Watch the self-consumption ratio over time. If you're exporting 70%+ of generation while your electricity bills are still high, you have a consumption timing mismatch — most of your household loads are running outside solar hours.

String voltage and current (advanced)

For string inverters (most single-inverter systems), the app shows voltage and current for each string of panels. Both strings on a dual-MPPT inverter should behave similarly during the same time of day. If one string consistently underperforms the other, a panel in that string may be faulty, dirty, or shaded.

Perth generation benchmarks

Use these to sense-check your system's output:

For a 6.6kW north-facing system in Perth:

| Condition | Expected daily output | |---|---| | Clear sunny day (December) | 38–45 kWh | | Clear sunny day (June/July) | 18–24 kWh | | Partly cloudy day | 15–30 kWh (varies widely) | | Overcast day | 5–12 kWh |

If your system generates significantly less than the lower bound of the clear-day range on a clear Perth day, investigate.

Monthly benchmarks for a 6.6kW system:

• December–January: 1,100–1,250 kWh/month
• June–July: 600–650 kWh/month

If your monthly total falls more than 15–20% below these figures during a clear-weather month, it warrants a closer look.

Setting up alerts

Most monitoring platforms let you set up email or app notifications for:

• No data received (inverter offline for X hours) — most useful; catches WiFi disconnection, grid faults, and inverter shutdowns
• Generation below threshold — helpful but noisy (cloud cover triggers it)
• Fault codes — the most actionable; typically pushed immediately when the inverter detects a grid or hardware fault

Recommended minimum: Enable the "inverter offline" alert with a 2–4 hour delay. A clear Perth day with zero generation for 3+ hours is unusual enough to warrant checking.

Understanding common fault codes

Inverters report fault conditions via LED indicators and monitoring app status codes. The most common:

Grid fault / grid disconnect: The inverter detects the grid voltage or frequency is out of range, or the grid has gone down. The inverter shuts down as required by Australian standards. Usually resolves within minutes when grid conditions normalise. If it recurs frequently, it may indicate a local grid instability or a loose AC connection — call an electrician.

Isolation fault: The insulation resistance of the solar string has dropped below the safe threshold. This can indicate moisture ingress in a panel or connector, a damaged cable, or a failing panel. Requires professional investigation — don't ignore isolation faults.

Arc fault (AFCI): Detected arc in the DC wiring. Most modern inverters have arc fault detection. Requires professional inspection of DC cabling and connectors.

Communication fault / no data: Often just a WiFi connectivity issue rather than a system problem. Check the inverter's WiFi LED first. If the inverter is running normally but just not communicating with the monitoring server, generation is still occurring — you're just not seeing it in the app.

When to call your installer

• Isolation fault that doesn't clear within 24 hours
• Arc fault detection
• Inverter completely offline (no LEDs, no production) on a sunny day
• Generation consistently 20%+ below benchmark on clear days for 2+ weeks
• A single string consistently producing 30%+ less than the other string

What doesn't require a call:

• Lower production on cloudy or overcast days
• Seasonal generation drop in winter (this is normal)
• Brief grid disconnections that self-resolve within minutes
• WiFi communication gaps (unless the inverter itself is offline)

Monitoring app features vary by inverter brand and firmware version. Generation benchmarks are based on Perth conditions (PSH 5.0 annual average) for a 6.6kW system with north orientation at 22° pitch. Individual systems vary based on shading, panel degradation, and local weather patterns.