Active Energy Systems INC
Doing business as Shift Thermal
At a glance
EmployeesNot reported
In business sinceNot reported
HeadquartersKnoxville, TN
US patents2
SAM.gov UEISKYBKFBFX366
CAGE code7WPG6
Incorporated inDE
- HVAC systems
- s FLEX™
- dynamic thermal storage asset
- existing HVAC
- process cooling systems
- field erected systems
- building heating
Named on the company’s own website, read JUL 29, 2026
Supplier designations
For Profit Organization
Self-certified by the company in its SAM.gov registration
Patents
2 US patents granted 2024–2025, 2 of them in the five years to SEP 2025.
Thermal processes and apparatus 2
- Direct-contact heat exchange thermal energy storage systemUS 12,313,346 · granted MAY 27, 2025
- Heat exchange system for freezing a phase change material and methods thereofUS 12,000,659 · granted JUN 4, 2024
Granted to Active Energy Systems · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Active Energy Systems INC | Knoxville | TN | — | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.