# Companies using TSAT

292 companies use TSAT, based on their job posts and their employees' public profiles. From October 2025 to August 2026, 250 job posts named it. Power Engineer roles mention it most.

Data as of November 9, 2026. Source: Sumble.

## Which companies name TSAT in the most job posts?

The five companies with the most job posts naming TSAT are DNV, Electric Power Engineers, ERCOT, Midcontinent Independent System Operator (MISO) and Siemens. Of the five companies in the table, Electric Power Engineers has the most employees who list it on their profiles: 25.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [DNV](https://sumble.com/orgs/dnv) | 163 | 2 | "Demonstrable hands-on experience with one or more power system analysis software packages including PSS/E, DigSilent Power Factory, TSAT, TARA, ASPEN" (power system engineer - emt studies, Feb 4, 2026) |
| [Electric Power Engineers](https://sumble.com/orgs/electric-power-engineers) | 92 | 25 | "Perform advanced and specialized studies of the power grid utilizing industry standard analysis platforms such as PSS/e, PLSF, TSAT and PSCAD." (Senior Engineer– ERCOT Dynamic Modeling Team, Nov 4, 2026) |
| [ERCOT](https://sumble.com/orgs/ercot-electric-reliability-council-of-texas) | 64 | 4 | "…and electromagnetic transient analyses using power system simulation models (PSSE, VSAT, TSAT, PowerWorld, and/or PSCAD) under the direction of a senior level engineer or management." (planning engineer sr, Nov 3, 2026) |
| [Midcontinent Independent System Operator (MISO)](https://sumble.com/orgs/miso) | 52 | 6 | "Specific experience within any of the following: PSS/E, MUST, TARA, TSAT, and VSAT" (Engineer III Generation Interconnection, Nov 3, 2026) |
| [Siemens](https://sumble.com/orgs/siemens) | 44 | 4 | "…with experience analyzing power flow and dynamic stability using PSS®E, TARA, or TSAT in Transmission system planning and/or operations experience in MISO or SPP footprints—or PSCAD analysis…" (Lead Power Systems Consultant, Jun 22, 2026) |

## Is hiring for TSAT growing?

0.17 in every 10,000 job posts named TSAT from June to August 2026, against 0.13 from March to May. These are small numbers of job posts, so a few companies can move them.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 10 | 1,413,673 | 0.07 |
| Nov 2025 | 11 | 1,822,119 | 0.06 |
| Dec 2025 | 10 | 1,236,103 | 0.08 |
| Jan 2026 | 23 | 1,828,002 | 0.13 |
| Feb 2026 | 31 | 1,856,647 | 0.17 |
| Mar 2026 | 25 | 1,850,711 | 0.14 |
| Apr 2026 | 19 | 1,728,886 | 0.11 |
| May 2026 | 24 | 1,821,509 | 0.13 |
| Jun 2026 | 36 | 1,909,496 | 0.19 |
| Jul 2026 | 35 | 1,815,180 | 0.19 |
| Aug 2026 | 26 | 1,835,698 | 0.14 |

## How many companies named TSAT in a job post for the first time in recent months?

Job posts named TSAT for the first time at 15 companies from June to August 2026, against 11 from March to May. That brings the companies naming it for the first time since October 2025 to 38, through August 2026.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 11 |
| June to August 2026 | 15 |
| October 2025 to August 2026 | 38 |

Companies whose first job post naming it appeared in that period. Recruiters, staffing firms and job boards are left out.

## How do we know which companies use TSAT?

Employees' profiles add 147 companies to the 145 that name TSAT in job posts. 38 show up in both job posts and employees' profiles.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name TSAT | 145 | 49.6% |
| Employees' profiles list TSAT | 147 | 50.4% |

## What size are the companies that use TSAT?

Companies with more than 5,000 employees are 1.4 times as common among TSAT users as on the typical tech page, at 33%. 38 of its companies have fewer than 50 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 13% | 22% |
| 50 to 999 | 33% | 38% |
| 1,000 to 5,000 | 21% | 17% |
| Over 5,000 | 33% | 23% |

## Where are TSAT companies based?

65% of TSAT companies are based in the United States. France is less common than usual, at 3.2% against 4.6% on the typical tech page.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 185 | 65% | 43% |
| India | 18 | 6.3% | 6.9% |
| Canada | 15 | 5.3% | 3.6% |
| United Kingdom | 14 | 4.9% | 6.4% |
| France | 9 | 3.2% | 4.6% |
| Germany | 6 | 2.1% | 4.4% |

## Which roles mention TSAT most?

No single role dominates for TSAT; Power Engineer leads with 18% of the job posts. Power Engineer posts naming it numbered 8 from March to May 2026 and 18 from June to August.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Power Engineer | 18% | 45 | 8 | 18 |
| Systems Engineer | 10% | 25 | 8 | 9 |
| Consultant | 9.6% | 24 | 7 | 6 |
| Engineer | 8.8% | 22 | 5 | 9 |
| Business Development | 7.6% | 19 | 6 | 4 |
| Network Administrator | 5.6% | 14 | 9 | 2 |

## Which companies started naming TSAT in job posts recently?

23 companies with 50 or more employees started naming TSAT in job posts between April and August 2026. 7 of them have more than 5,000 employees.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [1898 & Co.](https://sumble.com/orgs/1898andco) | 3 |
| Commercial | [Terabase Energy](https://sumble.com/orgs/terabase-energy) | 3 |
| Commercial | [Resonetics](https://sumble.com/orgs/resonetics,-llc) | 1 |
| Commercial | [Mitsubishi Electric Power Products, Inc.](https://sumble.com/orgs/meppi-com) | 1 |
| Commercial | [NYISO](https://sumble.com/orgs/nyiso) | 1 |
| Mid-market | [Nidec Motor Corporation](https://sumble.com/orgs/nidec-motor) | 2 |
| Mid-market | [ENGIE North America Inc.](https://sumble.com/orgs/engie-north-america) | 2 |
| Mid-market | [Qcells EPC](https://sumble.com/orgs/qcells-usa) | 2 |
| Mid-market | [Nidec Conversion - India](https://sumble.com/orgs/nidec-industrial-solutions-india) | 2 |
| Mid-market | [Sungrow](https://sumble.com/orgs/sungrow-emea) | 1 |
| Enterprise | [Siemens Energy](https://sumble.com/orgs/siemens-energy) | 3 |
| Enterprise | [Tesla](https://sumble.com/orgs/tesla) | 3 |
| Enterprise | [Burns & McDonnell](https://sumble.com/orgs/burns-&-mcdonnell) | 3 |
| Enterprise | [Mitsubishi Electric](https://sumble.com/orgs/mitsubishi-electric-power-products) | 2 |
| Enterprise | [Black & Veatch](https://sumble.com/orgs/black-&-veatch) | 2 |

Companies that named TSAT in a job post for the first time between April and August 2026, ranked by their job posts in those months. AI-native companies get a group of their own, whatever their size. Recruiters and job boards are left out.

## What else do TSAT companies use?

TSAT companies are 419 times as likely as similar companies to use PSLF: 57% of them, against 0.14%. GE PSLF comes second, 344 times as common as usual, at 14%.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| PSLF | 55 | 57% | 0.14% | 419 times |
| GE PSLF | 14 | 14% | 0.04% | 344 times |
| PROMOD | 37 | 38% | 0.14% | 266 times |
| UPLAN | 13 | 13% | 0.05% | 255 times |
| PowerWorld | 46 | 47% | 0.19% | 253 times |
| ASPEN Oneliner | 23 | 24% | 0.1% | 241 times |
| EMTP | 36 | 37% | 0.19% | 193 times |
| Openwind | 13 | 13% | 0.08% | 164 times |

Shares are out of the 97 companies whose job posts name TSAT, not counting firms whose job posts name almost every technology.

## About this data

Sumble built this page. Sumble gives sales, marketing and other GTM teams technographics and hiring signals for the companies they sell to: the technologies each company uses, which teams are hiring and for what, and who reports to whom. That helps a team know who to contact, why now, and what to say.

Sumble covers more than 3.6 million companies, 93 million job posts collected since 2022 and 194 million employee profiles, and tracks more than 37,000 technologies. It finds which technologies a company uses by reading its job posts and its employees' public profiles.

Sumble has a free plan, and the same data is available through its API and MCP server.

A company counts when its own job posts or its employees' public profiles name the technology. Hiring is that technology's share of all job posts collected each month. Quotes are copied word for word from the companies' job posts.

Every figure on this page comes from Sumble's own analysis, and you won't find it outside Sumble.