Best Energy Efficiency Tech Companies in Denmark
The 75 best Energy Efficiency Tech companies in Denmark in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Danfoss.
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 Denmark
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Stage | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Danfoss 🦄 Manufacturer of solutions increasing machine productivity, reducing emissions, and lowering energy | $41M | 40 mo ago | 27,491 | Kim Fausing Chief Executive Officer | WordPressMySQLPHP+21 | Acquired | 4,162 patents Advanced HVAC and refrigeration components: compressors, valves, heat exchangers, and performance monitoring. | — |
| 2 | Lun Developer of software for heating load calculation and hydraulic balancing | $11M | 39 mo ago | 9 | Martin Collignon Co-Founder + CEO | — | Seed | — | — |
| 3 | ReMoni Developer of connected water and electricity meter | $8M | 56 mo ago | 38 38 → 30 (-21%) | Bo Eskerod Madsen Founder & CEO | WordPressMySQLPHP+27 | Seed | 46 patents Non‑intrusive monitoring and diagnostics of multiconductor power cables and flow sensors | 1 partnership |
| 4 | UbiqiSense Manufacturer of IoT sensors for smart buildings | $5M | 59 mo ago | 9 | Boris Stankovic Co-Founder | WebflowAkamaiGoogle Hosted Libraries+23 | Seed | — | 1 partnership |
| 5 | Ento AI-driven building energy management solution | $4M | 11 mo ago | 8 | Kasper Bjørn Nielsen Co-Founder & CTO | WebflowAmazon Web ServicesSwiper+26 | Seed | — | 1 job opening · 1 partnership |
| 6 | Hybird Energy Developer of hybrid energy solutions and systems | $3M | 16 mo ago | — | Johannes Torpe Co-Founder | — | Seed | — | — |
| 7 | Leapcraft HVAC management solution | $2M | 67 mo ago | 7 | Vinay Venkatraman Founder & CEO | — | Series A | — | — |
| 8 | Seneco Provider of a cloud-based platform offering street lighting control solutions | $2M | 105 mo ago | 7 | — | — | Acquired | 8 patents Smart energy‑harvesting lighting systems with motion‑based control and monitoring | — |
| 9 | Lua Cloud-based workflow management software for organizations | $2M | — | 5 | Keith Saft Co-Founder | — | Acqui-Hired | — | — |
| 10 | Anyware Provider of cloud and WIFI-enabled lighting control solutions | $1M | 96 mo ago | 3 | Morten Bremild Co-Founder & CEO | Cart FunctionalityWordPressMySQL+19 | Seed | — | — |
| 11 | Develco Products Provider of IoT devices for commercial and home use | $970K | 67 mo ago | — | Freddy Engel Chair | Umbracoanime.jsMicrosoft ASP.NET+28 | Funding Raised | — | — |
| 12 | Cool4sea Provider of cooling solutions for the maritime industry | $884K | 86 mo ago | 1 | Daniel Hansen CEO & Technical Manager | — | Seed | — | — |
| 13 | Suntherm SaaS-driven platform offering heating systems with built-in heat storage for smart grids | $772K | 69 mo ago | 9 | Morten Donnerup ex-Co-Founder | — | Seed | — | — |
| 14 | SiOx Provider of anti-corrosive quartz coating for metal surface | $734K | 66 mo ago | 2 | Henrik Pranov Co-Founder | — | Seed | — | — |
| 15 | FlexShape Provider of solutions for demand response management for utilities | $439K | 76 mo ago | — | Laurynas Siksnys Co-Founder & CEO | — | Funding Raised | — | — |
| 16 | Zenros Offers guest in-room service management solutions | $335K | 76 mo ago | 2 | — | — | Early Stage | — | — |
| 17 | OJ Provider of cloud-based HVAC monitoring solutions | $249K | 271 mo ago | 155 155 → 198 (+28%) | Bin Im Co-CEO | WordPressMySQLPHP+13 | Acquired | — | 1 job opening |
| 18 | Linc Energy consumption monitoring software and hardware | $217K | 81 mo ago | — | Pranay Krishen Co-Founder & CEO | — | Seed | — | — |
| 19 | GreenTrapOnline Intelligent remote rodent monitoring system for pest control | $131K | 168 mo ago | 3 | Morten Iversen CEO | — | Acquired | — | — |
| 20 | Flexecharge SaaS and AI-driven load management solution for EV charging station operators | $104K | 12 mo ago | 5 | Jan Koster CEO | Webflow EcommerceWebflowSegment+22 | Series A | — | 1 launch |
Top 12 Energy Efficiency Tech companies in Denmark
#1
Seed · Aarhus, Capital Region of Denmark · founded 2019 · 8 employees$3.7Mraised▾
AI-driven building energy management solution. It helps organizations to optimize their energy consumption by monitoring consumption data. The offered software solution is integrated with offerings of energy accounting & reporting, real-time auditing & alerting for crossing set threshold of consumption, the recommendation for improvements & saving opportunities, assessment of risk for change in climate, and more.
- Jun 2025Seed—
- Nov 2021Seed$3.7M
#2
Seed · Copenhagen, Capital Region of Denmark · founded 2023$2.5Mraised▾
Developer of hybrid energy solutions and systems. It optimizes energy efficiency and reduce carbon footprint. Its technology tracks electricity usage at the source level, allowing for real-time monitoring and control. With a focus on sustainability,Its solutions can be applied across various industries, from residential to commercial and industrial settings.
- Jan 2025Seed$2.5M
#3
Series A · Copenhagen, Capital Region of Denmark · founded 2018 · 5 employees$104.1Kraised▾
SaaS and AI-driven load management solution for EV charging station operators. The platform offers solutions that integrates with a charge controller with features like predictive charging, adaptive load management, battery optimization, charging pattern prediction, scheduling, and more.
- Jun 2025Series A$6.8M
- Jan 2024Seed—
- Jul 2022Seed$104.1K
#4
Danfoss 🦄Acquired · Nordborg, Southern Denmark · founded 1933 · 27491 employees$41.2Mraised▾
Manufacturer of solutions increasing machine productivity, reducing emissions, and lowering energy. The company provides technologies for electrification, heating, cooling, power conversion, and motor control. Its products serve industries including automotive, marine, industrial machinery, and renewable energy. The company focuses on developing solutions for energy efficiency and decarbonization.
#5
Seed · Copenhagen, Capital Region of Denmark · founded 2022 · 9 employees$11.2Mraised▾
Developer of software for heating load calculation and hydraulic balancing. The software facilitates the creation of heating load reports and performs hydraulic balancing. It offers a 3D scanner app for room measurement and a desktop version for data refinement. The software supports data capture of heating surfaces, optimization of flow temperature, and calculation of valve settings. It also automatically generates PDF reports.
- Mar 2023Seed$11.2M
- Seed—
#6
Seed · Skanderborg, Capital Region of Denmark · founded 2014 · 38 employees$7.9Mraised▾
Developer of connected water and electricity meter. It offers a range of connected devices clamped onto existing cables, flow pipes to measure the flow of electricity, heat, and water. The cloud platform automatically generates alarms using AI. The devices have integrated energy harvesters eliminating the need for batteries.
- Oct 2021Seed$4.7M
- Aug 2020Grant (prize money)$651.5K
- Mar 2020Seed$2.2M
- Dec 2018Grant (prize money)$1.3M
#7
Seed · Copenhagen, Capital Region of Denmark · founded 2016 · 9 employees$5Mraised▾
Manufactures IoT sensors for smart buildings, offices, and retail. Its product offers solutions for enhancing workforce productivity, energy usage optimization, and customer movement tracking. The IoT solution of the company uses the sensor for tracking the motion, object counting, footfall analysis, positioning, posture monitoring, and light intensity measurement.
- Jul 2021Seed$1.1M
- Jun 2020Seed$394.9K
- Jan 2019Seed$1.5M
- Jul 2017Seed$867K
#8
Series A · Copenhagen, Capital Region of Denmark · founded 2013 · 7 employees$2.1Mraised▾
HVAC management solution. It offers systems at scale to ensure good indoor climate, save energy and enable safe and healthy spaces. It provides solution to monitor energy use, indoor climate, noise levels, HVAC performance and occupancy trends.
- Nov 2020Series A$2.1M
- Feb 2018Seed—
- Oct 2016Seed—
#9
Acquired · Hasselager, Central Denmark Region · founded 2014 · 7 employees$2.1Mraised▾
Provider of a cloud-based platform offering street lighting control solutions. The system analyzes the traffic on the road to enable light only where relevant - delivering energy savings. It also offers cloud-driven control & monitoring system.
- Sep 2017Seed$801.4K
- Feb 2017Seed$142.3K
- Nov 2015Seed$129.5K
- Jun 2015Seed$662.5K
#10
Seed · Skive, Capital Region of Denmark · founded 2014 · 9 employees$772.1Kraised▾
Suntherm is a developer of a smart-grid prepared heating system with built-in heat storage. The platform offerings include "Suntherm varme" - which offers heating on subscription, "Heatstixx" - used to increase the heat storage capacity in a standard water tank, and "Suntherm heat pump" - used for heating systems.
- Sep 2020Grant (prize money)$239.2K
- Oct 2019Grant (prize money)$1.2M
- Aug 2019Grant (prize money)$388.1K
- Jan 2018Seed$32.3K
#11
Funding Raised · Aarhus, Capital Region of Denmark · founded 2007$970.4Kraised▾
Develco Products provides IoT devices for smart home, smart energy, healthcare, and building management applications. Offers wireless sensors, smart plugs & relays, gateways, Zigbee modules, and meter interfaces. Also offers a wireless platform and API solutions for IoT application development.
- Nov 2020Grant (prize money)$373.3K
- Nov 2017Grant (prize money)$262.5K
- Oct 2017Grant (prize money)$334.6K
#12
Seed · Espergaerde, Capital Region of Denmark · founded 2013 · 2 employees$733.7Kraised▾
Provider of anti-corrosive quartz coating for metal surface. It offers NANOmel - which involves the application and thermal curing of silicon oxide on an activated metal substrate that allows them to produce a thin fused coating of quartz on the metal surface. The coating protects the metal from being corroded and improves surface hardness and wearability.
- Dec 2020Seed$81.8K
- Nov 2016Grant (prize money)$55.3K
- Feb 2013Seed$651.9K
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 Denmark
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 379 Denmark-affiliated papers.
- Aalborg University168
- Technical University of Denmark164
- Danish Technological Institute35
- Aarhus University19
- University of Southern Denmark16
- Heat pump6→16
- Energy management1→11
- Renewable energy3→12
- Process engineering2→6
- Electricity1→5
- Heat pump38→46
- Process engineering6→14
- Thermodynamics4→12
- Electricity7→13
- Energy (signal processing)2→7
- Heat exchanger2→5
Where energy efficiency is researched across Denmark
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.
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.