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Longleaf Solar
80 MW
Third-party
Burke County, GA
Last updated: Apr 30, 2026 · COD: Sep 2023
Daily GenerationSCADA
312 MWh
30-day avg (expected: 382 MWh)
AvailabilitySCADA
87.3%
30-day (SLA: 97%)
Performance RatioComputed
78.1%
Weather-adjusted, 30-day
Generation GapComputed
-18.4%
vs weather-adjusted model
SLA StatusContract
Breach — 87.3%
vs 97% SLA · LD: ~$18.5K
Revenue ImpactComputed
-$3.2K/day
at PPA $45/MWh
Work OrdersCMMS
6 open (2 critical)
CMMS
DispatchField Ops
1 tech en route
ETA: Apr 30, 2:30 PM
AI Observations
3INV 7-12 block offline — 12 MW down since Apr 10
EquipmentCritical
INV-09 ground fault tripped the shared MV breaker. ~70 MWh/day lost.
Confidence High·
SCADARelay log
Tracker rows 14-22 stuck east-facing since Apr 8
EquipmentConcern
Zone 3 comms fault — 9 rows not tracking. ~13 MWh/day lost.
Confidence Medium·
SCADANEXTracker log
April SLA breach confirmed — 87.3% vs 97% minimum
ContractualCritical
Month locked below SLA. Estimated LD exposure ~$18.5K.
Confidence High·
Availability calcContract
Equipment Status
Inverter Health34 / 40 online6 offline (INV 7-12)SCADA
Tracker Status91% tracking9 rows in stow faultSCADA
Soiling Loss3.2%Above seasonal baseline (1.8%)Performance Model
Clipping Loss2.1%Normal for DC/AC ratioComputed
Generation History
Monthly average daily generation, expected (weather-adjusted), and PR.
Loss Waterfall — April 2026
From weather-adjusted modeled energy to net generation. Red = controllable abnormal losses, yellow = elevated above baseline, gray = expected losses.
Abnormal controllable losses: 13.9% (inverter + tracker) · Normal expected: 8.8% (temp, clipping, BOS, degradation) · Elevated soiling: 1.4% incremental above baseline
Equipment Summary
Inverter Fleet
- Count
- 40× SMA SC-2200
- Rating
- 2,000 kW each (80 MW)
- Online
- 34 / 40 (85%)
- Avg output (online)
- 1,420 kW (71%)
- Faults (30d)
- 3
- Last PM
- Mar 15, 2026
Tracker System
- Type
- NEXTracker NX Horizon
- Rows
- 120 total
- Tracking normally
- 111 / 120 (92.5%)
- Position fault
- 9 rows (zone 3)
- Range
- ±60°
- Firmware
- v4.2.1
Module Array
- Count
- ~180,000 modules
- Type
- LONGi Hi-MO 5, 540W
- DC capacity
- 97.2 MWdc
- DC/AC ratio
- 1.215
- Last I-V sweep
- Jan 8, 2026
- Degradation
- ~0.5%/yr
Event Timeline
14
Apr 30, 2026DispatchField tech dispatched — en route, ETA 2:30 PM (IGBT spare confirmed in regional inventory)
Apr 29, 2026SurveillanceAI flag: April SLA breach confirmed — monthly avail at 87.3%, cannot recover to 97% SLA
Apr 22, 2026SurveillanceAI flag: soiling loss at 2.8% — above 1.8% seasonal baseline
Apr 18, 2026OperationalHVAC unit 3 failure on BESS container (Palmetto) — temperature excursion logged
Apr 15, 2026SurveillanceAI flag: generation gap widening — -12.8% (was -3.1% prior month)
Apr 12, 2026OperationalParts order: IGBT module for INV-09 — checking regional spare inventory
Apr 11, 2026SurveillanceAI flag: MV block outage detected — 12 MW offline, SLA impact projected
Apr 10, 2026FaultINV-09 ground fault / insulation resistance event → IGBT overcurrent → MV protection relay opened shared AC breaker (INV 7-12 block offline)
Open Work Orders (6)
| Priority | WO # | Description | Assigned | Status | Type |
|---|---|---|---|---|---|
| Critical | WO-4821 | INV-09 IGBT replacement + ground fault isolation | J. Martinez | Tech en route | Field |
| Critical | WO-4822 | INV 7-8, 10-12 re-energization after INV-09 isolation | J. Martinez | Pending INV-09 fix | Field |
| Medium | WO-4819 | Tracker zone 3 comms segment / controller gateway diagnosis — rows 14-22 | R. Adams | Scheduled May 1 | Field |
| Medium | WO-4815 | Soiling assessment + panel wash scheduling | — | Unassigned | Field |
| Medium | WO-4810 | Block 2 I-V curve sweep (post-restoration QA) | — | Pending | Field |
| Low | WO-4803 | Vegetation management — east perimeter fence line | — | Scheduled May 15 | Field |
Remote resolution: 0 · Field dispatch required: 4 · Pending parts: 1 · Scheduled: 1