Insights

Target retrofit ClearSign specializes in retrofit combustion and emissions control technologies that improve throughput and reduce energy use at a fraction of the cost of traditional after-treatment, presenting a compelling value proposition for midstream and downstream players seeking capital-efficient upgrades.

Hydrogen readiness The development of hydrogen-capable low-NOx burners positions ClearSign to capitalize on shifting fuel mixes and decarbonization trends, offering cross-fuel benefits to refineries, producers, and heater manufacturers pursuing hydrogen-friendly solutions.

Energy efficiency edge Emissions control that avoids throughput penalties and minimizes energy consumption can appeal to operators facing tightening emissions regulations and high operating costs, suggesting opportunities with midstream heating units, heaters, and combustion OEMs.

Strategic partnerships Recent client wins and participation in industry conferences indicate momentum with equipment manufacturers and service providers; target collaborations with heater manufacturers and engineering firms to accelerate deployments and expand installed base.

Financial signals Recent quarterly revenue fluctuations and a solid funding base imply a scalable, capital-light deployment model; position offerings as cost-effective upgrades with clear ROI to attract project-based or staged purchase agreements.

ClearSign Technologies Tech Stack

ClearSign Technologies uses 8 technology products and services including RSS, Open Graph, Google Domains, and more. Explore ClearSign Technologies's tech stack below.

  • RSS
    Content Management System
  • Open Graph
    Content Management System
  • Google Domains
    Domain Name Services
  • Font Awesome
    Font Scripts
  • HTML5 Mobile Boilerplate
    Mobile Application Development Platforms
  • Elementor
    Page Builders
  • Piwik
    System Analytics & Monitoring
  • Sitelinks Search Box
    Web Tools And Plugins

Media & News

ClearSign Technologies's Email Address Formats

ClearSign Technologies uses at least 1 format(s):
ClearSign Technologies Email FormatsExamplePercentage
First.Last@clearsign.comJohn.Doe@clearsign.com
100%

Frequently Asked Questions

What is ClearSign Technologies's phone number?

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You can contact ClearSign Technologies's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is ClearSign Technologies's official website and social media links?

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ClearSign Technologies's official website is clearsign.com and has social profiles on LinkedIn.

What is ClearSign Technologies's NAICS code?

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ClearSign Technologies's NAICS code is 211 - Oil and Gas Extraction.

How many employees does ClearSign Technologies have currently?

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As of July 2026, ClearSign Technologies has approximately 23 employees across 1 continents, including North America. Key team members include President: M. M.Senior Vice President Engineering: J. C.Principal: M. S.. Explore ClearSign Technologies's employee directory with LeadIQ.

What industry does ClearSign Technologies belong to?

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ClearSign Technologies operates in the Oil and Gas industry.

What technology does ClearSign Technologies use?

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ClearSign Technologies's tech stack includes RSSOpen GraphGoogle DomainsFont AwesomeHTML5 Mobile BoilerplateElementorPiwikSitelinks Search Box.

What is ClearSign Technologies's email format?

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ClearSign Technologies's email format typically follows the pattern of First.Last@clearsign.com. Find more ClearSign Technologies email formats with LeadIQ.

How much funding has ClearSign Technologies raised to date?

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As of July 2026, ClearSign Technologies has raised $32M in funding. The last funding round occurred on May 28, 2026.

When was ClearSign Technologies founded?

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ClearSign Technologies was founded in 2008.
ClearSign Technologies logo

ClearSign Technologies

Oil and GasOklahoma, United States11-50 Employees

ClearSign Technologies operates in the oil and gas sector, developing technologies designed to address capital-intensive emissions-control requirements that can reduce throughput, consume energy, complicate design, and erode profits. The company offers retrofit solutions intended to deliver stronger emissions control and improved combustion performance at a fraction of the cost of traditional after-treatment methods. These methods can be applied wherever there is an open flame, regardless of fuel type.

Based in Tulsa, Oklahoma, the company is a small to mid-sized entrant in the energy technology space and trades on NASDAQ under CLIR. In early 2026, it announced a new client relationship with Tulsa Heaters Midstream and an order for its M1 burner.

Section iconCompany Overview

Phone number
NAICS Code
211 - Oil and Gas Extraction
Founded
2008
Employees
11-50

Section iconFunding & Financials

  • $32M

    ClearSign Technologies has raised a total of $32M of funding over 8 rounds. Their latest funding round was raised on May 28, 2026as a post_ipo_equity.

  • $1M$10M

    ClearSign Technologies's revenue is estimated to be in the range of $1M$10M

Section iconFunding & Financials

  • $32M

    ClearSign Technologies has raised a total of $32M of funding over 8 rounds. Their latest funding round was raised on May 28, 2026as a post_ipo_equity.

  • $1M$10M

    ClearSign Technologies's revenue is estimated to be in the range of $1M$10M

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