Comparison · PJM Queue Tools
SlackWatt vs. PJM Queue Data
Queue Reality Check vs. PJM's public interconnection queue tables
PJM publishes its full interconnection queue as a free, publicly downloadable spreadsheet updated weekly. It lists every active project by queue number, technology type, requested MW, substation, and study phase. This is the authoritative source — SlackWatt reads from it.
The problem is that raw MW totals are a poor proxy for realistic competition. With historical U.S. withdrawal rates near 80%, most projects in the queue will never be built. Queue Reality Check applies a probability model to each project so developers see weighted estimates rather than inflated nominal MW.
How they compare
| Dimension | PJM Public Queue Data | Queue Reality Check |
|---|---|---|
| Data source | PJM's own authoritative queue spreadsheet, updated weekly | Same PJM data, parsed and stored with additional derived fields |
| MW representation | Raw nameplate MW as submitted by each applicant | Probability-weighted MW discounted by study phase, technology, and queue age |
| Substation filtering | Manual filter in Excel or a browser table with limited sort/search | Searchable substation picker with automatic radius-based project lookup |
| Scenario modeling | Not available — static snapshot only | Per-project build/withdraw toggles that recompute totals instantly |
| Cost | Free and public | Free early access during beta; waitlist open |
| Format | CSV or HTML table — requires manual analysis in Excel or a BI tool | Interactive web tool — no spreadsheet skills required |
Where PJM Public Queue Data excels
- Fully authoritative — direct from PJM with no intermediate processing or interpretation.
- Completely free and requires no account, registration, or waitlist.
- Covers all PJM queue projects without any filtering or data reduction.
- Familiar format for experienced interconnection practitioners who already work in Excel.
Where Queue Reality Check excels
- Probability weighting converts unreliable raw MW into estimates calibrated to historical withdrawal behavior.
- Substation search surfaces only the projects relevant to a specific POI — no manual filtering needed.
- Scenario modeling quantifies how the competitive picture changes when projects withdraw or advance.
- No spreadsheet skills required — analysts and developers get actionable numbers in seconds.
Who each tool is for
PJM Public Queue Data
PJM's public queue data is indispensable for experienced interconnection practitioners, regulatory analysts, and researchers who need the full, unfiltered dataset and are comfortable working with raw CSV exports.
Queue Reality Check
Queue Reality Check is built for developers who want to act on queue data — not just view it. If you're evaluating a specific substation and need to know realistic competition rather than nominal MW, Queue Reality Check translates the raw PJM data into a number you can use in an investment memo.
Learn more about PJM Public Queue Data on their official website.
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Run your own scenario
Use Queue Reality Check to see probability-weighted competition at any PJM substation — and stress-test assumptions before you commit.
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