AI Tools for Solar Farm Technicians

Days 1-3: Clear skies, wind 8-12 mph, high UV index — expect near-nameplate production. Day 4: 60% cloud cover, wind gusting to 25 mph — production may drop 35%. Days 5-7: Overcast with 80% chance of rain — good window for ground-level maintenance. Days 8-10: Clearing to partly cloudy.

ToolRouter get_forecast

Days 1–3

Clear · Wind 8–12 mph · High UV — near-nameplate production expected

Day 4

60% cloud cover · Gusts to 25 mph — production down ~35%

Days 5–7

Overcast · 80% rain chance — ideal ground-level maintenance window

Days 8–10

Clearing to partly cloudy — production recovering

Fault 3501 is an insulation resistance error on the DC side. Possible causes: damaged module backsheet creating ground fault, wet junction boxes after rain, or faulty string wiring. Diagnostic steps: 1) Isolate strings individually to locate fault, 2) Check IR values with megohmmeter at each string, 3) Visual inspection of junction boxes and wiring. Safety note: de-energize AC before any DC-side work.

ToolRouter research

Fault meaning

Insulation resistance error on DC side — ground fault suspected

Likely causes

Damaged module backsheet, wet junction boxes after rain, faulty string wiring

Step 1

Isolate strings individually to locate fault string

Step 2

Check IR values with megohmmeter at each string connection

Step 3

Visual inspection of junction boxes and wiring for damage or moisture

Found 8 suppliers: 3 authorized Fronius distributors (IronRidge, SunWatts, Renvu), 2 refurbished unit suppliers with warranty, and 3 alternative compatible inverters from Sungrow, SMA, and Huawei at similar power class. Contacts for each.

ToolRouter find_leads

SupplierTypeOption

IronRidgeAuthorized FroniusFronius Symo 15.0-3 · new unit

SunWattsAuthorized FroniusFronius Symo 15.0-3 · in stock

PV ExchangeRefurbishedCertified refurb with 1-yr warranty

SungrowCompatible alternativeSG15RT 3-phase · same power class

8 suppliers found · 3 authorized + 2 refurb + 3 alternatives

Generated 3-page corrective maintenance report including: incident summary and root cause (internal capacitor failure — common in this model after 7 years), equipment removed and installed, production loss estimate (4.8 MWh), testing results confirming full restoration, and recommendation for proactive replacement of remaining same-vintage units.

ToolRouter repurpose_content

3 pages

Estimated Q3 production for 3 MW array in Albuquerque: 3,210 MWh (July: 1,140, August: 1,098, September: 972). Actual 2,850 MWh represents 88.8% performance ratio — approximately 11% below expected. Suggests soiling losses, inverter clipping, or tracker alignment issues worth investigating.

ToolRouter solar_estimate

Expected (MWh)

Actual (MWh)