Top 48 Energy Saving startups

Updated: Feb 24, 2026
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These startups develop energy saving technologies, such as smart thermostats, LED lighting, building automation systems, energy-efficient HVAC systems, solar photovoltaic panels, battery energy storage, heat recovery systems, etc.
1
HomeBoost
Country: USA | Funding: $4M
HomeBoost offers a do-it-yourself energy assessment system that helps homeowners identify leaky windows and find rebate opportunities and other ways to cut their energy bills. It ships to homeowners custom hardware that, coupled with a smartphone app, scans the home and then home energy experts review and produce the report.
2
H2 Green Steel
Country: Sweden | Funding: $10.9B
H2 Green Steel operates a steel production plant to accelerate the decarbonization of the steel industry using green energy.
3
Arcadia
Country: USA | Funding: $575.5M
Arcadia Power is a nationwide home energy platform providing clean energy and savings.
4
Turntide Technologies
Country: USA | Funding: $491.5M
Turntide‘s Smart Motor System optimizes motor energy use and helps eliminate mechanical issues.
5
Electra
Country: USA | Funding: $443.5M
Electra is decarbonizing the steel industry by reducing power consumption of electric arc furnaces. It allows to start and stop production on demand and uses the lowest-cost, intermittent renewable electricity to reduce energy costs.
6
Boston Metal
Country: USA | Funding: $403.7M
Boston Metal is a metals production company that develops an electric-powered tech to decarbonize steelmaking and metal production.
7
Budderfly
Country: USA | Funding: $382M
Budderfly is an energy management company with devices that measure and report on all elements of energy use.
8
Sense
Country: USA | Funding: $174.6M
Sense is offering home owners better insight into their energy usage levels, so they can adjust accordingly. The tech, which relies on AI/ML, works with smart meters from companies like Landis+Gyr and Schneider Electric.
9
Viridi Parente
Country: USA | Funding: $133M
Viridi, which operates through Green Machine Equipment and Volta Energy Products, builds renewable energy products and systems that substitute for fossil fuel, lead-acid batteries and other older technology.
10
Aeroseal
Country: USA | Funding: $119M
Aeroseal seals both air ducts and building envelopes so you waste less energy and reduce your bill
11
GoExpedi
Country: USA | Funding: $108.3M
GoExpedi is a platform for the oil and gas industry to more efficiently procure critical parts and supplies
12
Sealed
Country: USA | Funding: $97.5M
Sealed covers the upfront costs to install energy-saving upgrades like insulation, smart tech, and HVAC to make your house feel like new.
13
METRON
Country: France | Funding: €52.5M
METRON's unique AI, supported by Machine Learning and ontologies, is fully context-aware and provides unrivaled insight into energy usage. METRON-EVA, the "Energy Virtual Assistant", collaborates with experts on energy intelligence strategies.
14
Sensorfact
Country: Netherlands | Funding: €43M
Sensorfact offers smart energy savings in the manufacturing industry.
15
Bia Energy
Country: Colombia | Funding: $45M
Bia is an energy trader that will initially focus on businesses in Colombia, offering them smart meters and a consumption analysis platform with real-time analytics. The startup claims to reduce consumption by analyzing data directly from a mobile application and that an average user could save up to 10% on their energy bill each month with these measurements.
16
Sapphire Technologies
Country: USA | Funding: $28M
Sapphire Technologies develops, manufactures, and sells energy recovery systems for both natural gas and hydrogen industrial applications.
17
AeroShield Materials
Country: USA | Funding: $25.9M
AeroShield Materials is creating thermally insulating transparent inserts. The inserts are only four millimeters of AeroShield's material and, when placed inside a double-pane window, provides 65 percent more energy efficiency.
18
CaPow
Country: Israel | Funding: $22.5M
CaPow offers a solution that brings perpetual power to automated robotics fleets.
19
Iyris
Country: Saudi Arabia | Funding: $17.5M
Iyris is creating special, high-tech glass that blocks heat, saves energy and produces electricity.
20
Emulate Energy
Country: Sweden | Funding: $18M
Emulate provides SaaS for utilities to offer behind-the-meter services and optimize demand flexibility with virtual battery technology.
21
Fuergy
Country: Slovakia | Funding: €16M
FUERGY has developed a highly-scalable hardware device and proprietary AI-powered software backed by blockchain called “brAIn”. This unique solution helps to optimize energy consumption and maximize efficiency of renewable energy sources. Thanks to an automated energy management it also significantly reduces the user's energy costs.
22
Verv
Country: UK | Funding: $16.9M
Verv is an intelligent home hub, which gives the power to take control of energy usage to ultimately reduce energy bills.
23
Bisly
Country: Estonia | Funding: €15.8M
Bisly is an Estonian startup developing intelligent building solutions.
24
SepPure
Country: Singapore | Funding: $16.2M
SEPPURE creates sustainable nanofiltration solutions to separate chemical mixtures at a molecular level with minimal energy use.
25
Tibo Energy
Country: Netherlands | Funding: €9M
Tibo Energy is an energy management company that offers an Energy Management System to eliminate grid congestion and optimize energy use.
26
Wattwatchers
Country: Australia | Funding: $7.9M
Wattwatchers is a new open platform, low cost energy-saving network for homes and businesses. It combines a suite of Class 1, all-IP, metering, monitoring and control devices with co-developed software interfaces, cloud -service management tools and Energy Service offerings.
27
InPipe Energy
Country: USA | Funding: $6.5M
InPipe Energy enable water agencies to manage pressure while producing renewable energy-turning excess pressure into a revenue stream.
28
Helios
Country: Israel | Funding: $6M
Helios novel chemical processes reduce carbon emissions, energy consumption and OpEx in Steel, Copper, Nickel, Silicon and more.
29
INOVUES
Country: USA | Funding: $5.5M
INOVUES is a window technology company that provides the only solution that enables existing building facades to be retrofitted with the latest energy-saving and smart glass innovations without removal or replacement
30
AlixLabs
Country: Sweden | Funding: SEK59M
AlixLabs has developed a new, innovative method for manufacturing semiconductor components with a high degree of packing, eliminating several steps in the semiconductor manufacturing process
31
Evolution Energie
Country: France
Evolution Energie provides energy management solutions to large companies & utility intensive industries.
32
Gridio
Country: Estonia | Funding: €4.2M
Gridio is aiming to help people adjust electricity consumption so they can save money and energy
33
DEXMA
Country: Spain | Funding: $3.8M
DEXMA is a SaaS-based platform providing energy management software to the corporate, public administration, and industrial sectors.
34
QEA Tech
Country: Canada | Funding: $3.3M
QEA Tech is a software company that combines AI, drone technology, and thermal imaging to provide insights into the building envelope.
35
Lition
Country: Germany | Funding: €3M
Lition is a licensed energy provider with a blockchain based peer2peer energy trading solution. Lition is up and running with real customers and real power plants. By bypassing unnecessary middle men, Lition’s Energy Exchange saves customers an average of 20% on their utility bills while simultaneously increasing power plant revenue by up to 30%.
36
Synergi
Country: Finland | Funding: €2.8M
Synergi is on a mission to make electricity consumption smart and controllable for households, giving Europeans more power over their energy bills and emission output and balancing the electricity grid. 
37
Termina
Country: Australia | Funding: $3M
Termina operates as an energy tech startup.
38
FeTu
Country: UK
FeTu specialises in reducing energy consumption and emissions through its self-developed two-stage turbine technology, which applications in the energy market and manufacturing industries including aerospace and marine.
39
R8tech
Country: Estonia | Funding: €2.4M
R8 Digital Operator develops artificially intelligent add-on software for your existing Building Automation System (BAS, BMS).
40
Tablepointer
Country: Singapore | Funding: SGD3M
TablePointer is the AI solution for small and medium commercial facilities, helping them optimise energy usage and increase profitability.
41
FenestraPro
Country: Ireland | Funding: $1.4M
FenestraPro is software for architects to design environmentally efficient nondomestic building facades more cost effectively.
42
Bamboo Energy
Country: Spain | Funding: €551.3K
Bamboo Energy develops a platform for retailers and aggregators to easily manage and trade distributed flexibility resources. The platform forecasts consumption, flexibility, and market conditions for optimal portfolio management.
43
GELF Energy
Country: USA | Funding: $24K
GELF Energy has redesigned the anaerobic digestion process with the development of a system called the Microbial Energy Device, which produces higher quality methane in one-tenth the time, at doubled efficiency, with nature-based carbon capture technology.
44
Meterleader
Country: USA
MeterLeader is an online portal that offers online challenges integrated with real-time electricity data to motivate people to save energy.
45
Green Energy Pal
Country: Croatia
Green Energy Pal develops a private energy consultant which explains to users in a simple way how to achieve greater energy efficiency and how to reduce their electricity bills.
46
Bill Hero
Country: Australia
BillHero is an application that monitors your bills and notifies you of opportunities to save by switching providers.
47
Energia das Coisas
Country: Brazil
Energia das Coisas is specialized in measuring energy consumption linked to CO2 emissions, aiming to reduce costs and increase competitiveness
48
EEtility
Country: USA
EEtility works with utilities to finance efficiency upgrades--often as simple as new insulation and caulking.
  See also:
Alexander Gillet
Editor: Alexander Gillet
Alexander Gillet is a senior editor for EnergyStartups. He has a deep background in energy sector and startups. Alexander graduated from Emlyon Business School, a leading French business school specialized in entrepreneurship. He has helped several non-profit organizations dedicated to promoting environmental education and sustainability and has written over 250 articles on energy technology for various websites. In his free time, Alexander enjoys yoga, camping and exploring the Blue Ridge Mountains. You can contact Alexander at alexgillet(at)energystartups(dot)com