Maximize Your PJM Capacity Revenue
Every MW demonstrated is worth ~$61k/season. Pick the right test day.
Capacity Test Optimizer helps PJM plant operators identify the best 7-10 day test windows for Summer and Winter capacity tests. Combined cycle and simple cycle gas turbines can swing several MW based on conditions—our tool ensures you test when conditions maximize your demonstrated capacity and avoid costly miss-days.
- +3 MW typical upside = ~$184k/season in additional capacity revenue
- Avoid -5 MW miss-days = ~$307k protected value
- Reduce retest risk by testing on optimal conditions the first time
At $333/MW-day, the math is simple. Built for PJM operators and asset managers.
GILBERT 4(Combined Cycle)
Best 2-hr window
—
Best 2-hr multiplier
—
Eligible hours
0 / 24
Rated conditions (DBT/WBT)
17.0°F / 13.5°F
Forecast
Next 24 hours
How it works
Ingest hourly weather forecasts
We pull hourly dry bulb temperature, wet bulb temperature, relative humidity, and barometric pressure to match the resolution of real capacity testing—not daily averages.
Apply eligibility constraints
We mark each hour as eligible or ineligible based on plant configuration (e.g., inlet cooling) and season-rated conditions, and we always show the reason when an hour is ineligible.
Recommend the best test window
We score every eligible hour and highlight the best continuous test period (1 hour for simple cycle CTs, 2 hours for combined cycles) over a rolling 24-hour window, including the weather context that drives the result.
Hourly resolution, season-specific views (Summer OR Winter), and an audit-friendly table for every hour.
The Business Case
At current PJM capacity prices ($333.44/MW-day), every MW matters.
~$61,000
+1 MW seasonal
~$184,000
+3 MW (typical upside)
~$307,000 protected
Avoid -5 MW miss
For Combined Cycles
Running a test is cheap. Missing MW on a bad day is expensive. Combined cycles are sensitive to ambient conditions, ACC backpressure, and duct firing limits. Our optimizer identifies the best conditions to maximize demonstrated capacity.
For Simple Cycles
Avoid retests. Testing on a suboptimal day costs real MW and potentially requires another test run—with all the associated scheduling, fuel, and coordination costs. We help you test once, test right.
What you get
Best test window recommendations
Identify the top continuous test period (1 hour for simple cycle CTs, 2 hours for combined cycles), updated as forecasts change.
Eligibility-aware scoring
Ineligible hours remain visible, but results are only computed for eligible hours—always with a reason.
Hourly detail table
Scroll every hour with timestamps, eligibility, multiplier/output, and weather inputs in one place.
Rated conditions by season
Plant-specific rated baselines for Summer and Winter, displayed directly on the dashboard.
Tiered modeling framework
Start with a simple multiplier method, then upgrade to curve-based corrected net power when ready.
Built for multi-plant teams
Designed for organizations that manage multiple sites and want consistent test planning.
Two tiers: start simple, upgrade to precision
Standard (Tier 1): Multiplier method
- Default for every plant
- Uses an hourly correction factor where 100% means “no correction”
- MVP scoring is pressure-percentile weighted (other weather inputs remain visible)
- Recommendations optimize for the highest average multiplier over the test window
Pro (Tier 2): Curve-based corrected net power
- Uses plant-specific performance curves and correction curves
- Supports polynomial curve equations (2nd order by default; extensible)
- Produces corrected net power at rated conditions for each hour
- Recommendations optimize for the highest corrected net power over the test window
Tier 2 is designed for subscribers who want plant-specific curve fidelity. Tier 1 stays lightweight and fast.
Per-Plant Pricing
Choose your plant type and billing period. Season Pass is our most popular option, giving you 5 months of access—a month before and after the core 3-month testing window. Annual includes both seasons plus year-round readiness.
Summer Season: May 1 - September 30
Full coverage including prep and wrap-up. Core testing: June - August
Standard
Tier 1Multiplier-based capacity test planning
per plant
- Hourly weather forecasts
- Eligibility-aware scoring
- Best window recommendations
- Email alerts
- CSV/PDF exports
Pro
Tier 2Custom correction curves with PI data integration
per plant
PI data integration & custom curve development
- Everything in Standard
- Custom correction curves
- PI data integration
- Corrected MW predictions
- Priority support
After subscribing, we'll reach out to gather PI data and build your custom correction curves.
Want to explore first? Try the free demo
Season Pass
5 months of full access—prep, testing, and wrap-up. Summer (May-Sep) or Winter (Nov-Mar).
Annual
Both seasons included plus year-round readiness services and priority support.
Plant Assignment
Select your plants anytime after subscribing. 24-hour window to change if needed.
Professional Services
Our team can help you get the most out of Capacity Test Optimizer with hands-on expert support.
Correction Curve Development
Custom correction curves built from your PI/DCS operating data.
PI/DCS Integration
OSIsoft PI data connection, tag mapping, and real-time sync setup.
Capacity Test Consulting
Pre-test planning, test-day monitoring, and post-test analysis support.
Questions? Contact us for enterprise pricing or fleet discounts.
Compare plans
Swipe to see all plans →
| Feature | Standard | Pro |
|---|---|---|
| Hourly weather forecasts | ||
| Eligibility-aware scoring | ||
| Best window recommendations | ||
| Tier 1: Multiplier method | ||
| Team collaboration | ||
| Email notifications | ||
| Tier 2: Curve-based scoring | — | |
| Custom performance curves | — | |
| Corrected net power predictions | — | |
| Priority support | — |
FAQ
What is a test window?
PJM capacity tests are evaluated over continuous periods—1 hour for simple cycle combustion turbines, 2 hours for combined cycles. This tool highlights the best continuous window for your plant type, not isolated single hours.
Why hourly forecasts instead of daily averages?
Daily averages can hide the exact test window that matters. We keep everything hourly because capacity tests are planned and executed on hourly intervals.
What makes an hour eligible?
Eligibility depends on your plant configuration and rated conditions for the selected season. Ineligible hours are still shown, but scoring outputs are only computed for eligible hours.
What weather inputs do you display?
Dry bulb temperature, wet bulb temperature, relative humidity, and barometric pressure (psia at plant elevation).
How does the Tier 1 multiplier method work?
The multiplier method uses an hourly correction factor based on pressure percentiles. A value of 100% means no correction is needed. Recommendations optimize for the highest average multiplier over the test window.
What is Tier 2 curve-based scoring?
Tier 2 uses plant-specific performance curves and correction equations to calculate corrected net power at rated conditions. It provides more accurate predictions when curve data is available.
Which seasons are supported?
The tool supports both Summer and Winter capacity test planning. Each season uses plant-specific rated conditions to determine eligibility and optimal test windows.
How often is the weather data updated?
Weather forecasts are refreshed hourly to ensure recommendations reflect the latest conditions. The last update time is displayed on each plant's detail page.
Stop guessing. Pick the best test window.
If you operate combustion turbine or combined cycle units in PJM, Capacity Test Optimizer gives you a clear, hour-by-hour plan for when to test—backed by eligibility flags, rated conditions, and an audit-friendly view of the weather drivers.