Power, cooling and electrical equipment
The Index · September 2026 editionThe switchgear, transformers and cooling a data centre needs, and the contractors who fit them.
Revised edition. First published 2026-09-27; revised as follows:
- 2026-09-28 The Open models table was withdrawn: its dataset contained unsourced and implausible entries and omitted models released in 2026. It will return after a sourced rebuild.
- 2026-09-28 The Frontier labs, Semiconductors and Cloud tables were withdrawn after a review found errors in their data introduced by an automated research process (inflated assessment scores; quarterly revenue recorded as annual; a unit error in data-centre capacity). They will return after the data is restored from sourced values.
How to cite
Cognitive Coefficient Institute (2026). The Cognitive Coefficient Index, September 2026 edition: Power, cooling and electrical equipment. https://alpha.cognitivecoefficient.com/index/editions/2026-09/electrical. Licensed CC BY 4.0.
| # | Name | Segment | SCX · Stack Capacity Index | AIX · AI exposure |
|---|---|---|---|---|
| 01 | Schneider Electric | Power distribution & UPS | 83.7 | 50.0 |
| 02 | Vertiv | Power distribution & UPS | 74.9 | 80.0 |
| 03 | Comfort Systems USA | Electrical contractors & EPC | 58.7 | 55.0 |
| 04 | EMCOR | Electrical contractors & EPC | 56.5 | 25.0 |
| 05 | Wesco International | Electrical distribution | 55.5 | 22.0 |
| 06 | Siemens (Smart Infrastructure) | Power distribution & UPS | 54.7 | 15.0 |
| 07 | Legrand | Power distribution & UPS | 52.5 | 50.0 |
| 08 | ABB | Power distribution & UPS | 50.9 | 28.0 |
| 09 | Hitachi (Hitachi Energy) | Transformers & grid equipment | 46.7 | 18.0 |
| 10 | Caterpillar | Backup generation | 46.3 | 15.0 |
Stack Capacity Index: components and weights in this edition
Licensed CC BY 4.0: reuse freely, credit “Cognitive Coefficient Institute”. Scores are model outputs, not predictions. Terms.