Market-leading innovation in low-carbon technology
Passiv has been at the forefront of cleantech R&D since 2008, working collaboratively with a range of partners to deliver net-zero projects.
Innovation at Passiv
Innovation is at the heart of everything we do at Passiv. The Passiv Smart Thermostat is the result of over 10 years of R&D in low-carbon heating.
Passiv is expert in monitoring, controlling and optimising low-carbon technology in homes and can work as a project lead or partner to help deliver your decarbonisation project.
Passiv has completed over 50 projects working in partnership with Government, network operators, energy companies and manufacturers.
The Passiv team
Passiv's data scientists, algorithm developers and project managers bring extensive experience of managing projects deploying low carbon assets into homes, capturing and analysing data, and providing insightful project learnings.
Combining this with deep domain expertise in energy policy and regulation, Passiv can help organisations seeking research and consultancy support across the low-carbon energy landscape.
Our past projects
2025
STAT
The Smart Temperature Automation Technology (STAT) project further developed the Passiv Smart Thermostat with a range of new features and insights. The project saw the installation of 120 Passiv Smart Thermostats and gathered crucial early feedback from both installers and homeowners. This fed into the ongoing development of the Passiv Smart Thermostat, including solar optimisation, smart meter integration, and expanding Passiv’s flexibility service, Greener Grid Payments.
2024
Heatropolis
The Heatropolis project is an ongoing collaboration between Passiv UK, Metropolitan and UK Power Networks to decarbonise the UK's heat networks while lowering energy bills and supporting electricity networks. Heatropolis will explore how heat networks can be operated flexibly to minimise peak demand and how the benefits gained by network operators can be passed on to homes and businesses connected to the heat network.
2024
Energy Smart Heat Pump
The Energy Smart Heat Pump project saw Samsung and Passiv UK collaborate to provide smart demand side flexibility as part of the Department for Energy Security and Net Zero’s Interoperable Demand Side Response Programme. Passiv UK developed a smart controls solution for Samsung air source heat pumps compliant with PAS 1878, a standard for interoperable domestic flexibility from the British Standards Institute.
2022
EQUINOX
The Equitable Novel Flexibility Exchange project is an ongoing, multi-year project exploring how heat pumps can provide energy flexibility in an accessible, automated fashion. EQUINOX brings together suppliers, technology providers and DNOs to support the uptake of flexibility and address the challenges networks face with heat decarbonisation. Passiv UK are providing flexible heat pump controls as well as advanced modelling solutions, helping to forecast the potential impact of any interventions.
2022
FLATLINE
The Fixed Level Affordable Tariffs Led by Intelligently Networked Energy (FLATLINE) project explored the optimisation of low carbon assets including heat pumps, battery storage and solar PV in homes at Parc Eirin, Wales. As part of the project, Passiv’s smart controls provided demand side flexibility in collaboration with National Grid, allowing householders to earn extra money through automated responses that preserved user comfort.
2021
No Regrets
The No Regrets project, in collaboration with EDF, saw fully-funded hybrid heat pumps installed alongside Passiv’s smart controls. These smart controls helped to increase heat pump utilisation and overall system efficiency, reducing both costs and carbon emissions. Passiv also integrated with EDF’s PowerShift trading platform to provide seamless demand side flexibility to householders, using multiple energy sources to reduce electricity consumption whilst maintaining comfort.
2020
MADE
The Multi Asset Demand Execution (MADE) project involved Passiv utilising heat pumps, batteries, solar and EV chargepoints to shift consumption and reduce peak grid demand. This reduced energy bills through time of use tariff optimisation and resulted in bill savings of up to £260 per household. Analysis of Passiv’s results by Imperial College showed multi-asset optimisation could deliver savings of up to £500m in avoided reinforcement costs.
2019
FREEDOM
The Flexible Residential Energy Efficiency Demand Optimisation and Management (FREEDOM) project examined the feasibility and affordability of hybrid heat pumps. As part of the project, Passiv installed 75 hybrid systems with smart controls. Using thermal models of the properties, heat pump utilisation was increased whilst costs were reduced through time of use tariffs and peak reduction.
2018
SMETER
The Smart Meter Enabled Thermal Efficiency Ratings project was part of a government innovation programme which investigated how smart meter data could be used to evaluate the thermal efficiency of homes. Passiv utilised smart thermal sensors and smart meter readings to build a thermal profile of participating homes, calculating the heat transfer coefficient of different properties. This methodology underwent an independent evaluation which found the output to be 95% accurate.
2011
CLNR
The Customer Led Network Revolution project, with Northern Powergrid, was one of the largest smart grid demonstration projects ever undertaken in the UK. The project collected a range of datasets from over 10,000 homes across the country, building a comprehensive view of domestic electricity demand. Passiv provided whole-home monitoring and controls, feeding essential data into broader project analysis and helping householders manager their energy usage.
