Best Energy Efficiency Tech Companies in Austin, United States
The 40 best Energy Efficiency Tech companies in Austin, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Illumitex.
Our analysis of 50 Energy Efficiency Tech companies
$7.8b in tracked funding; 86% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy Efficiency Tech companies in Austin
| # | Company | Last round | Disclosed funding | Employees | Founder | Tech stack | Stage | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Allure Energy Geo-location based thermostats | — | — | — | Kevin Imes CEO & President | — | Deadpooled | 66 patents IoT-based smart energy management and coordinated environmental control systems. | — |
| 2 | BEST Smart energy strategies increasing net operating income and asset values | — | — | — | Ari Kahn Founder & CEO | — | Unfunded | 15 patents Patents concentrated in chemistry & materials | — |
| 3 | BFC Technologies Platform offering data center infrastructure analytics solution | — | — | 7 | — | — | Unfunded | — | — |
| 4 | Datahoist IoT predictive maintenance solutions for elevators, escalators, and industrial equipment | — | — | — | Christopher Pearce Co-Founder | — | Unfunded | 2 patents Predictive maintenance for elevators using IoT data, cloud analytics, and machine learning | — |
| 5 | delaware software Delaware Software is a business software engineering company. | — | — | 92 | — | — | — | — | — |
| 6 | EnerTrek Provider of energy efficiency software | — | — | — | eric fogg Owner | Orchard CoreWindows ServerMicrosoft ASP.NET+8 | Unfunded | — | — |
| 7 | ENY IoT-enabled automation products | — | — | — | Yushi Founder & CEO | — | Deadpooled | — | — |
| 8 | Fluence Bioengineering Manufacturer of LED lighting solutions for commercial cannabis cultivation environments | — | — | 200 | — | — | Acquired | 179 patents Optimized LED lighting and climate control for indoor horticulture systems. | — |
Top 12 Energy Efficiency Tech companies in Austin
#1
Series A · Austin, Texas · founded 2020 · 2 employees$125Kraised▾
AI powered autonomous medical coding solution for hospitals. The platform automatically assigns appropriate codes for diagnoses, procedures, and services by analyzing clinical documentations. It also offers analytics dashboards, detailed reporting, and explainable audit trails to enhance compliance, and accuracy in coding processes. The system is bi directionally integrated with leading electronic health record systems such as Epic and Cerner, enabling seamless processing of patient data directly into billing claims.
- Aug 2025Series A$21M
- Mar 2024Seed—
- Mar 2023Seed—
- Mar 2022Seed$500K
#2
Series C · Austin, Texas · founded 2009 · 25 employees$43Mraised▾
Green Revolution Cooling is a provider of oil immersion cooling for data centers. The modular data center features as a capital light and energy-efficient solution. The CarnotJet System is a liquid immersion cooling solution for data center servers. Rack-mounted servers from any OEM can be installed in special racks filled with a dielectric mineral oil blend called ElectroSafe, an electrical insulator with more heat capacity by volume than thin air.
- Mar 2022Series C$28M
- Jul 2020Series B$7M
- Oct 2013Grant (prize money)$1M
- Apr 2012Grant (prize money)$150K
#3
Deadpooled · Austin, Texas · founded 2005 · 22 employees$77.8Mraised▾
LED grow lights for horticulture, industrial, and architecture. It also offers LED lights for vertical farms, greenhouses, and indoor gardening that are specially tuned to plants' photosynthetic needs by saving energy and increasing yields. They also make patented-LED white light fixtures for industry and architecture.
- Dec 2017Series C$7M
- Nov 2016Series C$4M
- May 2015Series C$16M
- Oct 2014Conventional Debt$4M
#4
Series C · Austin, Texas · founded 1997 · 33 employees$64.2Mraised▾
RFID-based asset and environmental monitoring solution for industrial applications. The solutions developed by the company use RFID-based sensors to track the location and ambient environment of the tagged asset. The data collected by the sensors is sent wirelessly to a central platform which allows the user to remotely monitor the assets and visualize the collected data.
- Nov 2018Series C$6.6M
- Jul 2018Series C$6.6M
- May 2011Series C$12M
- Jul 2010Conventional Debt$1M
#5
Deadpooled · Austin, Texas · founded 2003 · 17 employees$45.2Mraised▾
Manufacturer of photovoltaic cells based on micron-gap thermophotovoltaics technology. It converts waste heat into electricity in a high-temperature environment. It also provides a platform manager software that track, monitor, and manage all components of the systems. It has applications in the glass, oil, gas, cement, steel, chemicals, and thermal oxidizer industries.
- Oct 2018Series C$17.9M
- Feb 2017Grant (prize money)$150K
- Dec 2016Series B$5M
- Oct 2016Grant (prize money)—
#6
Acquired · Austin, Texas · founded 2009 · 78 employees$31Mraised▾
Offers dynamic LED lighting fixtures, controls, and software that allows for easy deployment of dynamic lighting that changes in intensity and color temperature in accordance with the time of day, occasion, or occupant preference. Through their patented technology, they manufacture LED products including lamps, drive chips, modules, and other controls.
- 2015Series B—
- 2011Series A—
#7
Deadpooled · Austin, Texas · founded 2009 · 20 employees$18.6Mraised▾
Offers outdoor lighting-based security platforms for security grid solutions. Solutions include LED-based lighting, security, surveillance, and control systems, and the Guardian Security Platform, a LED lighting platform for security grids that enables IP video surveillance and sensor systems to monitor pedestrian and vehicular traffic, and campus activity. The company serves federal, state, and local government agencies and private institutions.
- Sep 2015Series A$1.8M
- Oct 2013Series A$7.8M
- Aug 2012Series A$9M
#8
Funding Raised · Austin, Texas · founded 2007 · 19 employees$11.2Mraised▾
Sheetak is a designer and manufacturer of high-performance thermoelectric chips. Their products include Centum Chips - a solid-state heat pump for refrigeration, freezers, PCR thermal cyclers, optoelectronic communications, electronics cooling, water cooling and heating, and spot air-conditioners and Ignis Chips - solid-state generator chips for fuel-agnostic combustion sources such as natural gas and propane, concentrated solar, IoT, and self-powered autonomous systems.
- Feb 2013Grant (prize money)$149K
- Nov 2012Grant (prize money)$1.1M
- Nov 2011Grant (prize money)$4.6M
- Aug 2010Grant (prize money)—
#9
Deadpooled · Austin, Texas · founded 2012 · 7 employees$5Mraised▾
Provider of smart lighting control systems. It offers connected dimmers that facilitate users to remotely control lights in real-time. By installing the module into the light switch, the user can use the smartphone companion app to control their home lighting modules. The user can control a single light, room lighting system, and more.
- Jun 2017Conventional Debt$2.6M
- May 2015Series A$3M
- Aug 2014Seed$773K
- Oct 2013Seed$760K
#10
Series A · Austin, Texas · founded 2011 · 16 employees$2.5Mraised▾
SaaS-driven building energy management solution provider. Features include utility bill collection and analysis, building benchmarking, ESG reporting, predictive forecasts, and more. Provides analytical tools that enable decision-making for the performance of the building. The platform enables software solutions to optimize building performance and reduce emissions.
- Jan 2020Conventional Debt$607.5K
- Dec 2018Series A$1.2M
- Oct 2016Seed$755K
- Sep 2016Seed—
#11
Acquired · Austin, Texas · founded 2003 · 31 employees$4Mraised▾
Provider of software solution for utility connection monitoring and demand response management. The software can be used for continuous monitoring of the energy program, detailed accounting and operating cost monitoring, usage and demand information reporting, data management of utility and supplier bills, smart meter and interval data integration, sub-metering, and bill auditing. The demand response solution consists of hardware & software products to leverage automation controls of buildings, real-time usage & historical data reporting, and performance reporting.
- May 2019Series A$4M
#12
Deadpooled · Austin, Texas · founded 2009 · 10 employees$3Mraised▾
Manufacturer of LED light bulbs, fixtures, and lighting products. The company provides full range of "Smart LED" light bulbs for direct replacement of incandescent and fluorescent bulbs. FireFly's LED Lights are low energy, low heat and have a long life allowing customers to reduce heat and energy costs by up to 90 percent.
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy Efficiency Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
What Austin researches in energy efficiency
- The University of Texas at Austin21
- Austin Health1
- Universidad Nacional José Faustino Sánchez Carrión1
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.