Plant Analytics — Command Center
Executive KPIs · OEE waterfall · SPC + Cpk · multi-horizon forecast · sensitivity · model health
M08· Isolation Forest anomaly
OEE
87.2%
1.2%WCM ≥ 85%
First-Pass Yield
96.85%
0.4%Tier-1 ≥ 96%
Throughput
1080/h
3.8%3569 MW/yr
Cost / Watt
$0.038
2.1%Target $0.11
Energy / Watt
0.030 kWh
1.4%Best-in-class 0.028
Scrap rate
1.40%
0.3%Tier-1 ≤ 1.5%
Carbon
12.5 g/W
0.8%Target ≤ 14
Annualised cap
3568.6 MW
2.6%Nameplate 14.0
OEE Waterfall
Ideal → Availability → Performance → Quality → OEE
A
93.0%
P
96.0%
Q
97.8%
OEE
87.2%
Station OEE matrixA · P · Q · OEE
| Station | Avail | Perf | Qual | OEE | Trend |
|---|---|---|---|---|---|
Wafer Inspection INSP | 91.0% | 95.2% | 99.8% | 86.5% | |
Texturing TEX | 95.0% | 94.0% | 99.8% | 89.1% | |
Diffusion (POCl₃) DIFF | 95.0% | 94.0% | 99.7% | 89.0% | |
PECVD (SiNx) PECVD | 91.0% | 94.0% | 99.7% | 85.3% | |
Screen Printing PRINT | 93.0% | 92.8% | 99.6% | 86.0% | |
Firing Furnace FIRE | 92.0% | 95.2% | 99.8% | 87.4% | |
Cell Test & Sort CELL | 95.0% | 94.0% | 99.5% | 88.9% | |
Stringing STR | 95.0% | 94.0% | 99.7% | 89.0% | |
Lamination LAM | 91.0% | 95.2% | 99.6% | 86.3% | |
Framing & J-Box FRAME | 93.0% | 96.4% | 99.9% | 89.6% | |
Final Test (EL/Flash) TEST | 91.0% | 95.2% | 99.7% | 86.4% |
SPC — Final Test Yield
Mean 96.74% · σ 0.328 · UCL 97.73 · LCL 95.76
Cp
1.02
Cpk
-1.28
DPM
32.6k
WE viol.
0
Throughput · actual vs P10/P50/P90 forecast
TFT 24-step horizon · prediction interval widens with uncertainty
1m
18
P10–P90 16–19
5m
90
P10–P90 81–97
15m
270
P10–P90 243–292
30m
540
P10–P90 486–583
Defect Pareto · 80/20 root causeM37
Top defect modes with cumulative contribution
Throughput sensitivity · ±10% cycle time
DoWhy causal Δ-modules over a 5-min what-if. Largest bars = bottleneck candidates.
LAM
-180/+153
FRAME
-180/+153
TEST
-90/+77
STR
-60/+51
DIFF
-19/+16
PECVD
-7/+6
TEX
-6/+5
FIRE
-6/+5
Multivariate anomaly scoreM08M10threshold 0.70
Cost composition
Energy$4180 · 50%
Consumables$2940 · 35%
Scrap$1300 · 15%
Total run cost
$8420
≈ $0.038 / W produced
Model health · drift & latencyPSI threshold 0.20
M01ok
Defect detector
PSI0.04
p95 lat38 ms
M07ok
RUL CNN-LSTM
PSI0.09
p95 lat142 ms
M08warn
Anomaly IF
PSI0.21
p95 lat19 ms
M09ok
TFT forecast
PSI0.06
p95 lat410 ms
M12ok
BO recipe tuner
PSI0.11
p95 lat2300 ms
M37warn
Defect propensity
PSI0.34
p95 lat24 ms
M52ok
Sensor AE
PSI0.05
p95 lat12 ms