☀️ Solar Energy

Monitor Solar Plant Production In Real Time

Inverter efficiency, string currents, self-consumption ratio, and grid export on a single screen. Detect performance loss within minutes.

GES güneş enerjisi üretim izleme

Solar Plant Efficiency

Expected returns on solar investments depend on inverter and panel efficiency. A single string dropping due to shading, soiling, or a fault can reduce daily output by 10–20%.

Argus EMS reads inverter data via Modbus and visualises instantaneous kW output, DC string currents, AC output quality, and daily kWh totals. Expected vs actual production deviation alarms are sent within minutes.

The self-consumption and export balance is clearly visible; peak operating hours and seasonal production trends are easy to analyse.

Solar Module

  • Per-inverter production tracking (daily/monthly/yearly)
  • String current imbalance alarm
  • Performance Ratio (PR) calculation
  • Self-consumption vs grid export separation
  • Expected vs actual production deviation alarm
  • Weather correlation (irradiance, temperature)
  • Return on investment (ROI) tracking report

Where Does Production Loss Come From?

Most of the yield loss in solar plants comes from invisible causes. Argus detects each one separately.

🌫️

Panel Soiling

Dust, pollen, and bird droppings coat the panel surface. In dry summer months, efficiency can drop 5–15%. The expected vs actual production gap signals cleaning time and also avoids unnecessary cleaning cost.

🌓

Shading & Layout

Shade from a tree, chimney, or neighbouring row drops a single string and affects the whole MPPT block. The string current imbalance alarm detects the shaded array within minutes.

🔥

Inverter Overheating

A cooling fan failure or high ambient temperature puts the inverter into protective derating mode and curtails output. The inverter temperature register is monitored to warn before derating.

⚠️

DC Arc & Insulation

A damp cable connection or aging connector lowers insulation resistance, creating a fire risk. The inverter's insulation and fault codes are read to raise a safety alarm.

Solar Monitoring Questions

What is Performance Ratio (PR) and why does it matter?
PR is the ratio of actual to theoretical production. Above 80% is considered healthy. A declining PR over time means panel aging, soiling, or hidden inverter efficiency loss. Argus computes PR alongside daily irradiance data; while the kWh figure alone hides seasonal effects, PR reveals true performance.
How quickly will I notice an inverter fault?
If an inverter stops completely, production drops to zero and a deviation alarm is sent within minutes. For partial losses (single string, derating), a comparison against the expected production model is made; a deviation exceeding 10% triggers an email alert. Thus hidden losses that could last days are caught within hours.
Which inverter brands are supported?
Huawei SUN2000, SMA, Fronius, Goodwe, Sungrow, and all inverters with a known Modbus TCP/RTU register map are supported. A new model is integrated within a few hours by adding a device template; no extra licence is required.
How are self-consumption and grid export separated?
The import/export energy at the meter point is read together with inverter production. The portion of production consumed on site (self-consumption) and the portion exported to the grid are reported separately. This separation is critical for accurately calculating return on investment; self-consumption is a tariff saving, while export is a revenue item.

See Argus at Your Facility

Explore the system with your own data in a demo session.