Best Energy Efficiency Tech Companies in North Carolina, United States
The 42 best Energy Efficiency Tech companies in North Carolina, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Phononic.
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 North Carolina
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Web popularity | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Aztrom Home inspection reporting software solutions for efficient property assessments | — | — | — | Ross Montgomery Founder | — | — | — | — |
| 2 | Connect Controls Developing connected energy management solutions for buidings | — | — | — | Paul Bowen Founder | — | — | — | — |
| 3 | Coolcentric Liquid cooling solutions for data centers, optimizing energy efficiency and space | — | — | — | Mark Daugherty President & CEO | — | — | — | — |
| 4 | CurrentSee Load disaggregation monitoring software and sensors | — | — | — | Chris Doerfler Co-Founder | — | — | — | — |
| 5 | ELK Products Provider of diversified smart home security devices | — | — | 24 | Joel Rosson CEO & President | WordPressMySQLPHP+18 | Top 5M | — | — |
| 6 | Envisij Energy management software | — | — | 28 | — | — | — | — | — |
| 7 | ePowerOn Provider of electrical gear and related resources. This company offers a selection of electrical equipment… | — | — | — | Douglas Zhou CEO | — | — | — | — |
| 8 | esp/surgex ESP/SurgeX, the power protection, monitoring, and diagnostic solutions provider | — | — | 51 | — | — | — | — | — |
Top 12 Energy Efficiency Tech companies in North Carolina
#1
Series B · Durham, North Carolina · founded 2015 · 40 employees$25.9Mraised▾
Provider of energy management solutions for industrial and cold chain operations. The company offers an energy intensity platform designed for production-first energy management. It provides solutions for load control, temperature monitoring, and shore power. The company aims to decrease costs and increase sustainable industrial operations through its platform and services.
- Jan 2025Series B—
- Aug 2024Grant (prize money)—
- Apr 2024Series B$20.1M
- May 2021Series A$6M
#2
Seed · Carrboro, North Carolina · founded 2023$2.8Mraised▾
Provider of AI-powered energy and utilities management solutions. It is focused on providing sustainable energy solutions with the help of AI analytics. It offers automated insights and solutions for energy and utilities management in buildings.
- Apr 2025Seed$2.8M
#3
Seed · Durham, North Carolina · founded 2018 · 23 employees$1.8Mraised▾
AI-powered farm management solutions provider It provides AI-powered farm management solutions. It developed Smart Spectrum, an intelligent horticulture lighting system that records farm data and adjusts the light spectrum according to plant needs. also offers disease detection and inventory management solutions.
- Dec 2024Seed—
- Apr 2024Seed$515.2K
- Dec 2022Seed—
- Sep 2022Seed$1.3M
#4
Series F · Durham, North Carolina · founded 2009 · 109 employees$230Mraised▾
Providing solid state thermal management solutions. It utilizes thermoelectric capabilities of semi conductors to create products that can convert heat into electricity or use electricity to eliminate heat. Phononic has developed solid state pump which can replace compressors in high end refrigeration requirement like in labs and medical facilities.
- Jul 2021Series F$50M
- Jun 2020Conventional Debt—
- Nov 2016Series E$40M
- Sep 2016Series E$30M
#5
Acquired · Cary, North Carolina · founded 1999 · 533 employees$100Mraised▾
SaaS-driven CMMS software for commercial spaces. Features include work & asset management, energy management, event management, community management, and more. Offers solutions for multiple sectors such as education, healthcare, manufacturing, commercial, government, and more.
- Feb 2014PE$100M
#6
Acquired · Wake Forest, North Carolina · founded 1991 · 1030 employees$65Mraised▾
Energy efficiency and smart grid management solutions to electric utilities, and institutional and commercial customers. It provides products and services in the areas of Interactive Distributed Generation(IDG), energy efficiency, utility infrastructure, and solar energy. Its products and services are in the areas of energy efficiency, interactive distributed generation, and utility Infrastructure solutions. The company's energy-efficiency products and services include energy-efficient lighting solutions that utilize LED technologies to manage lighting quality and the design, installation, and maintenance of energy conservation.
- Sep 2015Grant (prize money)$40M
- Jun 2013Conventional Debt$25M
#7
Series A · Charlotte, North Carolina · founded 2014 · 26 employees$11.5Mraised▾
Provider of an online marketplace to book apartment turnover services. It serves an office, clubhouse, fitness center, laundry, elevator, pool, game room, and more. Offers services including wall repair, painting, maintenance, cleaning, resurfacing, carpet cleaning, virus safeguard service, 360-degree surface spraying, and more.
- Mar 2021Series A$10M
- Sep 2020Series A—
- May 2018Seed$1.5M
#8
Seed · Charlotte, North Carolina · founded 2013 · 2 employees$4.9Mraised▾
Provider of software and hardware tools for workforce safety. It offers an integrated real time location system that is an analytics tool that provides insights to optimize the workplace. It allows the monitoring and optimization of workplace data. It uses devices that are attached to hard hats, uniforms, equipment, or gear, and envoys to receive, consolidate, and transmit customized data. It also provides thermal camera for checking body heat in covid. The offering industries includes automotive, manufacturing, pharmaceutical, retail, and more.
- Jan 2020Conventional Debt$245K
- Feb 2017Angel$3.5M
- Jan 2015Seed$1.4M
#9
Acquired · Raleigh, North Carolina · founded 1983 · 23 employees$6Mraised▾
Power Analytics (fka EDSA Micro Corporation) develops and supports electrical power system design, simulation, and analytics software solutions. The company's products include Paladin DesignView - a real-time scientific visualization software tool that lets users to create detailed dashboards, Paladin Gateway - a power system data integration platform, Paladin Live - a power system analytics solution, Paladin Microgrid Power Management System - a software platform for the online management and control of hybrid power infrastructure areas, Paladin WSM - a white space management solution that integrates facilities and IT technology to enhance the management of power, space, and cooling, Designbase Xi - a cloud-based engineering software solution and EnergyNet - a software solution that enables integrated system planning, grid operations, and market transactions, as well as models, optimizes, monitors, and transacts business with energy systems. It serves data and network operations centers, manufacturing plants, nuclear power facilities, deep sea oil platforms, aircraft carriers, submarines, federal aviation administration networks, and other complex structures worldwide.
- Sep 2009Series B$384.2K
- Apr 2008Series B$5.5M
#10
Deadpooled · High Point, North Carolina · founded 1978 · 5 employees$1.6Mraised▾
Energy-efficient HVAC systems. The company specializes in creating proprietary fitted heating, ventilation, and air conditioning systems (HVAC) for homes and buildings. The company creates a 3-D model of each home, running software analytics to ultimately determine the most energy-efficient HVAC system. Their Total Flow design process includes proprietary ProDesign software to assist architects and builders in designing the cleanest, most comfortable, energy-efficient HVAC systems.
#11
Series C · Asheboro, North Carolina · founded 2011 · 59 employees$186.8Kraised▾
Developer of thermal energy storage and heating products. The company manufactures thermal energy storage and heating products for residential, medical, telecom, commercial, and other applications. Products include a thermal storage tank and an ice thermal energy storage system. They also manufacture thermal blankets rigid panel systems and Tempassists - which include wall blankets, drop ceilings, framed mirrors, etc.
- Aug 2022Series C—
- Nov 2020Grant (prize money)—
- Jan 2020Series B—
- Jan 2019Series A—
#12
Seed · Charlotte, North Carolina · founded 2008 · 16 employees$450Kraised▾
PointGuard is an online building analytics software. Features include facility management, portfolio management, work order management, and more. The company has partnered with Sonic Automotive, Georgia Tech, and Novant Health among others.
- Aug 2009Seed$450K
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
How research on Energy Efficiency & Buildings is moving in the United States
A read on the academic research around Energy Efficiency & Buildings — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 2,722 United States-affiliated papers.
- Purdue University West Lafayette140
- Oak Ridge National Laboratory127
- National Laboratory of the Rockies80
- Georgia Institute of Technology53
- Electric Power Research Institute53
- Radiative cooling1→50
- Passive cooling7→42
- Emissivity1→26
- Renewable energy14→38
- Thermal6→27
- Radiative cooling10→39
- Renewable energy63→89
- Energy storage22→48
- Photovoltaic system35→53
- Thermal35→53
- Renewable energy7→17
- Electricity2→9
- Heat pump40→47
- Energy management14→18
- Microgrid2→6
Where energy efficiency is researched across United States
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Who's filing energy efficiency patents in the United States
United States energy efficiency patent filing is accelerating — 3,337 filings from 1,859 assignees (2016–2025), led by Carrier, Intel, Rheem MFG; annual filings 315→449.
- Carrier430
- Intel178
- Rheem MFG177
- General Electric172
- Johnson Controls TECH123
- Haier US Appliance Solutions108
- FORD Global TECH108
- Lennox IND79
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.