# Companies using DNP3

3,659 companies use DNP3, based on their job posts and their employees' public profiles. Its share of job posts is growing, and 4,211 job posts named it from October 2025 to August 2026. Control Engineer is the role that names it most often.

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

## Which companies name DNP3 in the most job posts?

Among the companies with the most job posts naming DNP3 are GE Vernova (510), Hitachi Energy (487) and Siemens (411). GE Vernova is the newest of the five companies in the table, with its first job post naming it in December 2023.

| Company | Job posts | People | Recent job post |
|---|---:|---:|---|
| [GE Vernova](https://sumble.com/orgs/ge-vernova) | 510 | 59 | "Configure and verify communication protocols such as IEC 61850, DNP3, Modbus TCP/RTU, IEC 60870-5-104, and Ethernet/IP, as applicable." (NETCOM Expert – Site Commissioning & Field Service, Nov 6, 2026) |
| [Hitachi Energy](https://sumble.com/orgs/hitachi-energy) | 487 | 44 | "Support integration of protection systems with RTU, SCADA and substation automation platforms, including IEC 61850, IEC 60870-5-104 and DNP3 communication protocols." (Application Engineer - APAC, Nov 7, 2026) |
| [Siemens](https://sumble.com/orgs/siemens) | 411 | 66 | "…hardware configuration, and protocols such as IEC 61850 (MMS/GOOSE/Sampled Values), DNP3, Modbus, IEC 60870-5-101/103/104, PROFINET, and PROFIBUS." (Electrical Engineer - Panel Design, Nov 7, 2026) |
| [Schneider Electric](https://sumble.com/orgs/schneider-electric) | 364 | 105 | "Build end-to-end test suites to test, alarm management, historian modules, and communication protocols (Modbus, DNP3, IEC 60870, IEC 61850, SNMP, OPC-UA/DA)." (Deputy Manager - Digital Solutions, Nov 7, 2026) |
| [Eaton](https://sumble.com/orgs/eaton) | 213 | 28 | "Knowledge of Power Monitoring and Control Systems and associated protocols (Modbus, DNP3, IEC-61850)" (Lead Power Systems Controls Engineer, Nov 6, 2026) |

## Is hiring for DNP3 growing?

Job posts mentioning DNP3 went from 2.1 to 2.4 in every 10,000 job posts, comparing March to May with June to August 2026. July 2026 was its highest month since October 2025, at 2.6.

| Month | Job posts naming it | All job posts | Per 10,000 job posts |
|---|---:|---:|---:|
| Oct 2025 | 277 | 1,413,673 | 2.0 |
| Nov 2025 | 338 | 1,822,119 | 1.9 |
| Dec 2025 | 277 | 1,236,103 | 2.2 |
| Jan 2026 | 378 | 1,828,002 | 2.1 |
| Feb 2026 | 440 | 1,856,647 | 2.4 |
| Mar 2026 | 382 | 1,850,711 | 2.1 |
| Apr 2026 | 360 | 1,728,886 | 2.1 |
| May 2026 | 416 | 1,821,509 | 2.3 |
| Jun 2026 | 463 | 1,909,496 | 2.4 |
| Jul 2026 | 472 | 1,815,180 | 2.6 |
| Aug 2026 | 408 | 1,835,698 | 2.2 |

## How many companies named DNP3 in a job post for the first time in recent months?

In the three months to August 2026, 189 companies posted about DNP3 for the first time. From March to May, 165 did. From October 2025 to August 2026, 594 companies named it in a job post for the first time.

| Period | Companies naming it in a job post for the first time |
|---|---:|
| March to May 2026 | 165 |
| June to August 2026 | 189 |
| October 2025 to August 2026 | 594 |

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 DNP3?

2,406 of the 3,659 companies name DNP3 in their own job posts. 1,253 come from employees' profiles alone.

| How we know | Companies | Share |
|---|---:|---:|
| Job posts name DNP3 | 2,406 | 66% |
| Employees' profiles list DNP3 | 1,253 | 34% |

## What size are the companies that use DNP3?

By size, the biggest group of DNP3 users is companies with 50 to 999 employees, at 45%. 562 of its companies have more than 5,000 employees.

| Size | Share | Typical tech page |
|---|---:|---:|
| Under 50 employees | 23% | 22% |
| 50 to 999 | 45% | 38% |
| 1,000 to 5,000 | 17% | 17% |
| Over 5,000 | 15% | 23% |

## Where are DNP3 companies based?

Beyond the United States (42%), DNP3 is unusually common in Australia, at 5% of its companies. Canada is second, at 6.2%.

| Country | Companies | Share | Typical tech page |
|---|---:|---:|---:|
| United States | 1,480 | 42% | 43% |
| Canada | 216 | 6.2% | 3.6% |
| India | 191 | 5.5% | 6.9% |
| United Kingdom | 186 | 5.3% | 6.4% |
| Australia | 174 | 5% | 2.2% |
| Brazil | 168 | 4.8% | 2.8% |

## Which teams work with DNP3?

DNP3 turns up most in job posts for engineering, SCADA and cybersecurity teams. Operations and IT teams follow.

| Team | Companies |
|---|---:|
| Engineering | 47 |
| SCADA | 35 |
| Cybersecurity | 21 |
| Operations | 20 |
| IT | 17 |
| Operational technology | 15 |

## Which roles mention DNP3 most?

DNP3 shows up across many roles. The top one, Control Engineer, has 16% of the job posts. Control Engineer posts naming it numbered 177 from March to May 2026 and 210 from June to August.

| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---:|---:|---:|---:|
| Control Engineer | 16% | 653 | 177 | 210 |
| Automation Engineer | 5.6% | 234 | 53 | 78 |
| Skilled Trades | 5% | 212 | 49 | 57 |
| Engineer | 4.6% | 193 | 55 | 53 |
| Software Engineer | 3.6% | 153 | 40 | 49 |
| Systems Engineer | 3.5% | 146 | 34 | 43 |

## Which companies started naming DNP3 in job posts recently?

216 companies with 50 or more employees picked up DNP3 in their job posts from April to August 2026. LONGi Energy Storage has the most job posts of the new commercial companies, 6 from April to August.

| Group | Company | Job posts, April to August 2026 |
|---|---|---:|
| Commercial | [LONGi Energy Storage](https://sumble.com/orgs/苏州精控能源科技有限公司) | 6 |
| Commercial | [Raas Infotek](https://sumble.com/orgs/raas-infotek) | 5 |
| Commercial | [Litmus](https://sumble.com/orgs/litmus-automation) | 5 |
| Commercial | [Solaria Energía y Medio Ambiente](https://sumble.com/orgs/solaria-energ-a-y-medio-ambiente) | 4 |
| Commercial | [Firmus Technologies](https://sumble.com/orgs/firmustechnologies) | 4 |
| Mid-market | [DIGISYSTEM - IT Solutions](https://sumble.com/orgs/digisystem) | 5 |
| Mid-market | [Williams](https://sumble.com/orgs/williams-companies) | 4 |
| Mid-market | [Rolls-Royce Power Systems](https://sumble.com/orgs/rolls-royce-power-systems) | 3 |
| Mid-market | [PPC S.A.](https://sumble.com/orgs/ppc-s.a.) | 3 |
| Mid-market | [Al Ghurair](https://sumble.com/orgs/al-ghurair-investment) | 3 |
| Enterprise | [SONDA](https://sumble.com/orgs/sonda-it) | 4 |
| Enterprise | [TE Connectivity](https://sumble.com/orgs/te-connectivity) | 2 |
| Enterprise | [CrowdStrike](https://sumble.com/orgs/crowdstrike) | 2 |
| Enterprise | [APM Terminals](https://sumble.com/orgs/apm-terminals) | 2 |
| Enterprise | [Accenture in the Philippines](https://sumble.com/orgs/accenture-in-the-philippines) | 2 |

Companies that named DNP3 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 DNP3 companies use?

DNP3 companies are 78 times as likely as similar companies to use ICCP: 10% of them, against 0.13%. Next is PSLF: 8.1% of these companies use it, against 0.1% of similar ones.

| Tool | Companies | Also name it | Typical | Times as common |
|---|---:|---:|---:|---:|
| ICCP | 167 | 10% | 0.13% | 78 times |
| PSLF | 135 | 8.1% | 0.1% | 77 times |
| ASPEN Oneliner | 87 | 5.2% | 0.07% | 70 times |
| PowerWorld | 131 | 7.8% | 0.14% | 55 times |
| Dragos | 97 | 5.8% | 0.11% | 55 times |
| PROMOD | 93 | 5.6% | 0.11% | 52 times |
| PSS/E | 384 | 23% | 0.51% | 45 times |
| EMTP | 107 | 6.4% | 0.14% | 45 times |

Shares are out of the 1,672 companies whose job posts name DNP3, not counting firms whose job posts name almost every technology.

## Which project themes come up in DNP3 job posts?

925 job posts naming DNP3 describe broad digital transformation, and 26 describe Data Infrastructure Migration work. After that comes Security Infrastructure Modernization, with 20.

| Project theme | Job posts |
|---|---:|
| Digital Transformation | 925 |
| Data Infrastructure Migration | 26 |
| Security Infrastructure Modernization | 20 |
| Microservices Migration | 9 |

## 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.