Top 50 Building Energy Retrofit in Europe

Stunning Green utilizes advanced retrofitting techniques to enhance the energy efficiency of existing buildings, thereby reducing their carbon emissions. This approach directly contributes to global efforts for climate neutrality by lowering the overall environmental impact of urban infrastructure.

Kestrix uses non-invasive machine learning and computer vision to map and quantify building heat loss at city scale. This technology enables energy retrofit planning by validating existing EPC data and rapidly prioritizing which homes require immediate attention. The platform also helps accurately price necessary retrofit interventions and verify decarbonization progress for stakeholders.

Provides end-to-end energy consulting and retrofitting services for residential and commercial properties, focusing on improving energy efficiency and sustainability. By combining building data analysis, tailored ESG strategies, and implementation of measures like insulation, window replacement, and renewable energy systems, it reduces CO₂ emissions, lowers operating costs, and increases property value by up to 30%.

This startup specializes in the digitalization and automation of drinking water systems and heating networks to enhance energy efficiency in buildings. By implementing advanced monitoring and control technologies, the company enables clients to reduce energy costs and achieve climate neutrality.

This startup provides net-zero modernization services that utilize solar panels for carbon dioxide-free heat and electricity generation in multi-family housing. By employing industrial prefabrication, modular construction, and efficient energy systems, the company enables property owners to meet tenant energy needs while minimizing environmental impact.

Enter provides a free, web‑based platform for German residential energy retrofits that begins with a dena‑certified video audit and creates a digital twin and individualized renovation roadmap (iSFP). Its AI‑driven engine aggregates and compares offers for heat pumps, insulation, windows and other measures from a vetted network of contractors, while automatically preparing BAFA and KfW subsidy applications. The service also coordinates installation, monitors progress, and delivers a transparent side‑by‑side pricing dashboard.

Sero provides a funded retrofit solution that combines private finance and grant funding to help social housing landlords upgrade their properties to meet Net Zero standards. By addressing the issue of energy inefficiency in over 1.6 million social homes, Sero enables landlords to reduce carbon emissions and lower energy costs for residents.

Accenta develops an energy management system that combines geo-storage and artificial intelligence to reduce heating and cooling consumption by up to 80% and carbon emissions by 95%, all without upfront investment. Their service model guarantees energy savings and simplifies compliance with regulatory standards, while providing real-time monitoring of energy usage and savings.

Underheat develops software and products that streamline the design and installation of heat pump systems, significantly reducing internal work to just three hours per installation. Their technology lowers heating costs by 35% and stabilizes wall temperatures, mitigating issues of mould and damp in existing buildings.

Furbnow provides expert guidance and project management for home energy efficiency upgrades, including insulation, solar installations, and heating systems. By conducting professional surveys and connecting homeowners with vetted installers, Furbnow ensures effective energy improvements that can reduce carbon emissions by up to 2.2 tonnes annually and save homeowners an average of £1,826 on energy bills.

VARM specializes in blow-in insulation technology, utilizing eco-friendly materials like cellulose and wood fiber to enhance energy efficiency in residential buildings. By improving thermal performance, their solutions can reduce heating costs by up to 50% while also qualifying homeowners for government subsidies of 20%.

aedifion offers an AI-based cloud platform that utilizes real-time data analytics to optimize building operations, reducing energy consumption, CO2 emissions, and operating costs by up to 40%. The platform provides actionable insights and autonomous control to enhance efficiency without requiring significant capital investments.

Snugg provides personalized energy efficiency plans that help homeowners identify and implement cost-effective improvements, such as insulation and solar panel installation, to reduce energy bills. The platform also connects users with financing options and trusted local installers, addressing the fragmented nature of the home energy efficiency market.

Reneo offers a platform for decarbonizing residential real estate assets in Germany. They provide end-to-end solutions for transforming existing properties to meet sustainability goals.

Lamarr.AI provides an autonomous platform for building envelope diagnostics using thermal imaging and artificial intelligence to detect thermal defects in real-time. This technology enables rapid identification of energy inefficiencies, facilitating the transition to Net Zero buildings while reducing maintenance costs.

Preflet Energy AI Platform utilizes machine learning to analyze multidimensional data, including smart meter readings and climate information, to generate actionable insights for improving energy efficiency in buildings. This technology enables property managers to reduce energy costs and carbon emissions without the need for significant hardware investments or technical expertise.

The startup develops AI-powered digital twin technology that creates virtual replicas of non-domestic buildings to analyze energy consumption patterns. This technology enables facility managers to identify efficiency improvements, leading to significant cost savings and reduced carbon emissions.

This startup develops indoor comfort and energy control systems that utilize historical, real-time, and predictive data to optimize building energy consumption and indoor climate. By employing advanced control algorithms, the company enables real estate operators to enhance operational efficiency, reduce energy costs, and generate revenue through grid balancing.

AirEx manufactures smart air bricks that optimize airflow in homes with suspended floors, significantly reducing heat loss and improving energy efficiency. Their technology enhances energy performance certificates (EPC) by 2-5 SAP points, resulting in lower fuel bills and increased thermal comfort for occupants.

Enerdrape develops the world's first geothermal panel technology to convert underground infrastructure into renewable heating and cooling sources. This solution enables property owners and energy professionals to achieve decarbonization goals and enhance energy autonomy. The system integrates easily into new constructions and renovations to provide sustainable thermal energy.

Gridty offers AI-driven energy analysis for commercial and industrial buildings, using 3D and satellite data to identify energy-saving opportunities. The platform provides data-based strategies for integrating PV systems, battery storage, and heat pumps, accelerating sustainability goals without requiring on-site visits.

measurable.energy provides a machine learning-powered platform that utilizes smart plug sockets to monitor and control energy consumption in buildings, automatically turning off devices to eliminate energy waste. This technology reduces electricity costs by at least 20% and helps users minimize their carbon emissions, supporting their net zero goals.

Provides a wireless IoT platform for hotels and buildings, integrating preconfigured sensors and devices to monitor occupancy, energy consumption, and air quality in real time. Reduces energy costs by up to 30% through automated controls, predictive maintenance alerts, and individual room-level data analysis, enabling efficient resource management without the need for wiring or complex programming.

MClimate develops IoT hardware and software solutions that enhance energy efficiency, monitor air quality, and prevent water loss in buildings. Their technology enables a 15-35% reduction in energy consumption while supporting companies in meeting their ESG goals through real-time data management and control.

Bisly develops a scalable building automation platform that integrates HVAC, lighting, and access control systems, enabling efficient energy management and operational oversight. The solution reduces energy consumption by 30-50% and minimizes installation overheads by 80% through its no-coding-required approach and patented software.

Carb0n provides a centralized platform for assessing energy consumption and implementing energy transition strategies in real estate, focusing on achieving carbon neutrality. The company offers tailored solutions, including energy audits, strategic planning, and performance monitoring, to enhance energy efficiency and reduce emissions across various property types.

Green Fusion provides an intelligent 360° energy management platform tailored for the housing industry. This platform automates and optimizes the operation of heating systems, ranging from conventional gas boilers to complex sector coupling setups involving heat pumps and PV integration. The core value is delivering measurable energy savings, cost reductions, and enhanced sustainability across entire property portfolios through AI-driven control.

Provides a software platform that uses LiDAR 3D scanning to automate the measurement of rooms and heating systems, generating DIN-compliant heating load reports in minutes. This streamlines the complex and time-consuming process of manual measurements and calculations, enabling energy consultants and HVAC professionals to optimize residential decarbonization efforts efficiently.

PowerWindow develops energy-generating light-tinted windows that utilize photovoltaic technology, transparent conductive materials, and energy storage systems to produce electricity. This innovation addresses the need for sustainable energy solutions in buildings, contributing to the decarbonization of real estate.

Elyos Energy is a machine learning platform that optimizes energy consumption and automates participation in demand response markets for commercial buildings. By utilizing AI-powered anomaly detection and integrated building management system controls, the platform reduces energy costs and enhances grid stability during peak demand periods.

vilisto provides a digital heating management system that utilizes self-learning thermostats and patented 3-sensor technology to optimize energy consumption in non-residential buildings. By automatically adjusting heating based on room occupancy, vilisto enables users to achieve up to 32% savings on heating costs and CO2 emissions.

The startup develops AI-based software that integrates building management system data with external datasets, such as energy provider information and weather forecasts, to create digital twins of buildings. This technology enables clients to accurately predict energy costs and optimize heating, cooling, and ventilation, resulting in significant cost savings.

Enerbrain provides a cloud-based IoT solution that optimizes heating, ventilation, and air conditioning (HVAC) systems in buildings to reduce energy consumption by 12-30%. The technology enables real-time monitoring and analysis of energy use, helping facilities minimize waste and lower operational costs.

Anzen offers wall‑integrated climate control units that use solid‑state thermoelectric technology to provide heating, cooling, and ventilation without refrigerants or compressors. The modular system installs in about two hours, delivers room‑by‑room temperature control, and operates quietly with low embodied carbon.

Fuchs & Eule provides a data-driven operating system for energy-efficient property renovations, offering personalized renovation plans and expert guidance throughout the process. The platform helps homeowners secure substantial government funding for energy-saving measures, significantly reducing energy costs and improving property efficiency.

Protio is a proptech platform that facilitates property renovation and energy upgrades through a streamlined online process, offering transparent pricing and financing options. The service addresses the inefficiencies in traditional renovation methods, enabling homeowners to complete projects quickly and affordably while enhancing property value and energy efficiency.

The startup operates an IoT-enabled platform that collects and analyzes building energy data to optimize energy consumption in real estate operations. By providing actionable insights, the platform helps real estate and energy companies reduce carbon emissions and achieve significant energy and cost savings without requiring structural changes.

Norm provides a modular platform that consolidates all building data into a centralized, AI‑enhanced database for real estate portfolios. The system enriches and updates information through integrated services, delivering 3D models, dynamic queries, and automated sustainability reporting. This unified data foundation supports precise CAPEX planning, portfolio performance analysis, and efficient asset management.

Maestro provides project management and financing assistance for home energy renovations, utilizing local certified artisans to ensure quality and timely execution. The company addresses the challenges of navigating complex renovation processes and securing financial aid, enabling homeowners to improve energy efficiency and reduce costs effectively.

LEDCity develops energy-efficient, autonomous lighting systems that utilize smart algorithms and integrated sensors to optimize light intensity and duration based on real-time needs. This technology significantly reduces energy consumption by up to 80% compared to traditional LED systems, addressing high energy costs in commercial buildings.

Setle is a renovation management platform that provides detailed cost estimations and energy efficiency analyses to help property owners and real estate agents plan sustainable renovations within budget. By offering real-time data and collaboration tools, Setle enhances decision-making and transparency in the renovation process, addressing the complexities of managing multiple stakeholders and regulatory requirements.

Terion develops AI-powered software that optimizes real-time energy consumption in buildings by aligning usage with renewable energy availability, addressing the impending strain on grid infrastructure as electricity demand rises. By integrating with existing energy management systems, Terion enables building managers to reduce energy costs and enhance ESG performance without the need for new platforms.

Optee provides a project management platform tailored for energy renovation professionals, streamlining the planning, execution, and monitoring of energy efficiency projects. It addresses inefficiencies in project coordination and tracking by centralizing workflows, improving collaboration, and ensuring compliance with regulatory standards. The platform enables users to manage timelines, budgets, and resources effectively, reducing delays and optimizing project outcomes.

This climate tech company provides a platform that facilitates large-scale decarbonization by enabling access to efficient funding without upfront capital expenditure. Clients benefit from off-balance sheet treatment, improved net asset value, and savings on energy bills while generating revenue from energy production.

Metacasa is an all-in-one platform that connects real estate agents, property owners, and qualified professionals to streamline residential energy-efficient renovations. The platform addresses the challenge of managing complex renovation projects by providing detailed planning, transparent cost estimates, and real-time progress tracking, ultimately enhancing property value and sustainability.

Solskin develops intelligent, climate-adaptive building envelopes that dynamically adjust energy production and interior shading based on environmental and user conditions. This system integrates dynamic solar facades with moving panels to generate PV power while significantly reducing building energy consumption. The result is enhanced building comfort and substantial energy efficiency through AI-driven control of solar heat gains.

This startup designs colored solar panels and facade systems that integrate seamlessly into building exteriors, enabling structures to generate more energy than they consume. By facilitating the transition to energy-efficient smart cities, their technology contributes to sustainable urban development and reduces reliance on traditional energy sources.

EcoSync provides a wireless energy monitoring platform that utilizes room-by-room control technology to optimize heating in commercial buildings, preventing unnecessary energy use in unoccupied spaces. This system reduces energy consumption by 30-50%, helping organizations meet sustainability goals while significantly lowering operational costs.

Soletair Power develops modular direct air capture systems that integrate with existing building ventilation systems to capture carbon dioxide from the atmosphere. This technology enables building owners to reduce their Scope 3 emissions, lower energy costs, and improve indoor air quality while contributing to climate change mitigation.

RIISE utilizes AI and satellite technology to automatically scan global cities, identifying high-value building upgrade opportunities and qualified sales leads. This platform enables businesses to enhance operational efficiency, reduce costs, and maximize revenue potential through targeted outreach and actionable insights.