Understanding Innovation Measures in ECO4:
What They Are and How They Affect Funding

The Energy Company Obligation (ECO) is a UK government initiative designed to improve the energy efficiency of homes, particularly those in vulnerable and fuel-poor households. Since its inception in 2013, the scheme has undergone several phases, each aiming to reduce carbon emissions and help households reduce their energy bills. The latest iteration, ECO4, running from 2022 to 2026, continues this mission but with enhanced provisions, particularly concerning innovation measures.

Innovation measures in ECO4 are critical to the programme’s success, driving forward new technologies and approaches that can significantly impact energy efficiency. This article will delve into what these innovation measures are, how they work, and how they affect funding under ECO4.

What Are Innovation Measures in ECO4?

Innovation measures under ECO4 are essentially new or novel technologies, products, or systems that have not been widely deployed in the UK but show significant potential to improve energy efficiency. The UK government, recognising the need for continuous advancement in energy-saving technologies, has integrated these innovation measures into the ECO4 framework to encourage the development and adoption of cutting-edge solutions.

Advanced insulation materials: New types of insulation that are more effective, easier to install, or less disruptive to building occupants.

High-efficiency heating systems: These could include novel heat pump technologies, advanced boilers, or hybrid systems that combine multiple energy sources.

Smart energy management systems: Innovative solutions that optimise energy use in real-time, responding to factors like weather conditions, energy prices, or occupant behaviour.

Renewable energy integrations: New ways to integrate renewable energy sources like solar, wind, or biomass into domestic heating and electricity systems more efficiently.

The aim is to provide a pathway for these innovative solutions to be tested, proven, and eventually mainstreamed, contributing to the broader goals of reducing carbon emissions and improving home energy efficiency across the UK.

Innovation measures play a pivotal role in ECO4 by ensuring that the scheme not only supports tried-and-tested energy efficiency measures but also encourages the market to push boundaries and explore new possibilities. The inclusion of innovation measures serves several key purposes:

1. Encouraging Market Growth and Technological Advancement: By supporting innovation measures, ECO4 helps to stimulate the market for new technologies. This can lead to greater competition, reduced costs, and more rapid technological advancements.

2. Addressing Unmet Needs: Traditional energy efficiency measures might not be suitable for all homes, particularly older or non-standard buildings. Innovation measures can provide tailored solutions that address the specific needs of these properties.

3. Enhancing Cost-effectiveness: Over time, innovation measures have the potential to become more cost-effective as they are refined and scaled. This can lead to greater savings for households and more efficient use of ECO4 funds.

4. Contributing to Carbon Reduction Targets: The UK has ambitious targets for reducing carbon emissions. Innovation measures that improve energy efficiency or integrate renewable energy can make a significant contribution to meeting these targets.

To qualify as an innovation measure under ECO4, a product or technology must undergo a rigorous evaluation process. This ensures that the measures are genuinely innovative and that they deliver tangible benefits in terms of energy efficiency and carbon reduction.

The process typically involves:

1. Initial Proposal and Assessment: Manufacturers or developers submit proposals for their innovative products or technologies. These proposals are assessed against criteria such as potential energy savings, carbon reduction potential, and the degree of innovation.

2. Technical Testing and Validation: Before being approved as an innovation measure, the product or technology must undergo technical testing. This may involve laboratory tests, field trials, or simulations to demonstrate its effectiveness and reliability.

3. Approval and Monitoring: Once approved: the innovation measure is added to the list of eligible measures under ECO4. However, this approval is not the end of the process. Ongoing monitoring is required to ensure that the measure delivers the expected benefits in practice.

4. Post-Installation Review: After installation, the performance of the innovation measure may be reviewed to gather data on its real-world effectiveness. This feedback loop helps to refine the measure and inform future iterations of ECO.

The introduction of innovation measures into the ECO4 framework has a significant impact on how funding is allocated and managed. Here are some of the keyways in which innovation measures affect ECO4 funding:

1. Incentivising Innovation: The UK government has structured ECO4 to incentivise the adoption of innovation measures. This is often done through enhanced funding or higher scores for projects that incorporate these measures. For instance, a project that uses an innovative insulation material might receive more funding than one using traditional methods, reflecting the higher cost and potential greater energy savings of the new material.

2. Risk and Reward Balance: Innovation measures inherently carry more risk than established technologies because they are newer and less proven. To balance this, ECO4 provides mechanisms for funding these measures while managing the associated risks. This could include pilot projects or phased rollouts where initial installations are closely monitored before wider adoption.

3. Targeted Funding: Innovation measures often target specific challenges that traditional measures cannot address. For example, a novel insulation method might be particularly effective in historic buildings that cannot be modified easily. ECO4 funding can be directed towards these niche applications, ensuring that the scheme benefits a broader range of properties.

4. Driving Down Costs Over Time: By funding innovation measures, ECO4 helps to bring down the costs of new technologies. As these measures become more common and economies of scale are realised, the cost of installing them decreases. This can make future ECO programmes more cost-effective and allows the government to stretch its funding further.

5. Ensuring Long-term Viability: Innovation measures can contribute to the long-term viability of the ECO scheme by ensuring that it evolves with technological advancements. This forward-looking approach helps to future-proof the scheme and ensures that it continues to deliver value as the energy landscape changes.

While innovation measures offer many benefits, there are also challenges and considerations that need to be addressed:

1. Technical Challenges: New technologies often come with technical challenges, such as installation complexity or compatibility with existing systems. These need to be carefully managed to ensure that innovation measures are practical and deliver the expected benefits.

2. Cost Considerations: While innovation measures can drive down costs over time, they may be more expensive in the short term. This can create budgetary pressures within the ECO4 framework and may require careful balancing of funding allocations.

3. Consumer Acceptance: Innovative solutions may require consumers to change their behaviour or adopt new technologies that they are unfamiliar with. Ensuring that consumers understand and accept these measures is crucial for their successful implementation.

4. Regulatory and Compliance Issues: Innovation measures must comply with existing regulations and standards. In some cases, regulations may need to be updated to accommodate new technologies, which can be a complex and time-consuming process.

5. Uncertainty and Risk: As with any new technology, there is an element of uncertainty and risk associated with innovation measures. This can be mitigated through careful monitoring and evaluation, but it is an inherent part of introducing new solutions.

To illustrate the impact of innovation measures in ECO4, let’s look at a few case studies:

Renewable Energy Systems: ECO4 also supports the integration of renewable energy sources through systems, such as those combining solar panels. These systems are being tested for their ability to reduce reliance on fossil fuels while providing stable energy supplies to homes. The innovation measures framework under ECO4 encourages the development and deployment of such systems by offering score uplifts and additional funding for projects that successfully implement these advanced technologies​ (Ofgem)​ (GOV.UK).

Advanced Insulation Materials: The ECO4 scheme supports the use of advanced insulation materials such as aerogel insulation, which offers superior thermal performance while being lightweight and suitable for older homes that are challenging to insulate with traditional materials. These materials are part of the Innovation Measures (IM) route under ECO4, which encourages the use of novel products that can enhance energy efficiency. The Ofgem guidance outlines how these products can achieve an uplift in scores due to their innovative nature, thus receiving more funding​ (Ofgem)​ (Ofgem).

High-efficiency Heat Pumps: High-efficiency heat pumps, particularly those designed to operate effectively in colder climates, are another innovation measure under ECO4. For example, hybrid heat pump systems that combine traditional heating methods with renewable energy sources are being trialled. These systems have shown promise in reducing energy consumption significantly compared to conventional systems, making them eligible for higher funding and support under ECO4​ (GOV.UK).

Smart Thermostats and Energy Management: Smart thermostats and energy management systems are being explored as part of the ECO4 innovation measures. These systems allow for real-time energy optimisation based on data such as weather conditions and occupancy, leading to substantial energy savings. Projects that integrate these smart technologies are supported by ECO4 through its Innovation Measure route, which provides a framework for scoring and funding these advanced solutions​ (Ofgem).

30 Innovation Measures on ECO4

The following are some specific innovation measures as stipulated by OfGem which provide uplift in funding on the ECO4 scheme.

#Innovation Measure TypeUpliftAwarded SupplierDescriptionProductWebsite Link
001External Wall Insulation (EWI)25%ECO3-approved IMInstallation of a new façade creating a ventilated cavity between the outer surface of the system and the non-combustible blown fibre insulation.Soltherm Modulus Brick-ID SystemSoltherm
002Under Floor Insulation (UFI)25%ECO3-approved IMRobotics and AI used to install underfloor insulation, reducing disruption and installation time.Q-BotQ-Bot
003Smart Thermostat25%ECO3-approved IMSmart thermostat using GSM connectivity and multiple sensors to optimise heating settings.Switchee Smart ThermostatsSwitchee
004External Wall Insulation (EWI)25%ECO3-approved IMInstallation of modular, tongue and groove, pre-primed insulation boards using a rail system.InstacladInstaclad
005Internal Wall Insulation (IWI)25%ECO3-approved IMInjection of EPS beads with adhesive into the cavity between internal lining and exterior wall.Energystore SuperbeadEnergystore
006Party Cavity Wall Insulation (PWI)25%ECO3-approved IMInjection of EPS beads with adhesive into party cavity walls using a lance system.Climabead Party WallClimabead
007External Wall Insulation (EWI)25%(ECO3-approved IMEWI system using mineral wool insulation slabs with a fixing method enabling increased wind load resistance.Soltherm 75Soltherm
008Smart Thermostat25%(ECO3-approved IMSmart thermostat with an algorithm that reduces temperature based on user requirements for energy efficiency.Nest Thermostats with Seasonal Savings algorithm (Nest Learning Thermostat and Thermostat E)Nest
009See IM 017Changed to IM 017
010Room in Roof Insulation (RIRI)25%ECO3-approved IMCertified room in roof thermal insulation layer envelope and plasterboard lining system.MI Systems Design RIRI
011External Wall Insulation (EWI)25%ECO3-approved IMEWI product subject to independent technical monitoring with an inspection and maintenance program.Wetherby EWIWetherby
012Boiler25%ECO3-approved IMDomestic-sized micro–combined Heat and Power (mCHP) unit with low temperature fuel cell.Viessmann Vitovalor 300PT2Viessmann
013Solar PV25%ECO3-approved IMMCS certified monocrystalline PV modules with built-in Tigo optimisers, enhancing electricity production and safety.UKSOL MCS certified monocrystalline solar PV panels with built in Tigo optimisersUKSOL
014Room in Roof Insulation (RIRI)25%ECO3-approved IMEWI system with adhesively fixed ‘Fire Safe Composite’ (FSC)
panels.
The FSC panels reduce fire spread across the EWI in comparison to
standard EPS, PIR and PUR panels.
Smart Fix Systems RIRI (Aerogel)Smart Fix
015External Wall Insulation (EWI)25%ECO3-approved IMEWI system using Fire Safe Composite (FSC) panels designed to reduce fire spread.Soltherm FSCSoltherm
016Smart Thermostat25%ECO3-approved IMSmart thermostat with programmable interface and connectivity via Wi-Fi and Bluetooth Low Energy.Secure Meters C1727 Smart ThermostatSecure Meters
017Cavity Wall Insulation (CWI)45%EDF EnergyInjection of mineral wool insulation into cavity walls using a rope access technique for high-rise buildings.ARP CWI
018Solar PV45%E.ON EnergySystem connecting up to 15 flats with single-phase output connections for shared solar energy.Allume Energy’s SolShareAllume Energy
019Cavity Wall Insulation (CWI)25%ScottishPowerInjection of EPS beads produced using biofuels, supporting reduced lifetime emissions.EnergyStore Superbead 33+ CWI SystemEneryStore
020Solar PV45%E.ON EnergyMCS certified Solar PV modules with integrated power optimisers for enhanced output and safety.SolarEdge Smart Module with integrated S series (sense connect) Power OptimizersSolarEdge
021External Wall Insulation (EWI)25%E.ON EnergyEWI product with regular inspection and maintenance program ensuring durability.InstaClad Robust EWIInstaClad
022Solar PV45%EDF EnergyMCS certified monocrystalline PV modules with optimisers and Cloud Connect unit for remote monitoring.UKSOL monocrystalline solar PV panels with built in Tigo optimisers and CCA/TAP modules specified.UKSOL
023External Wall Insulation (EWI)25%ScottishPowerEWI system with improved impact and wind load resistance and fire performance.Soltherm Dynamic EWISoltherm
024External Wall Insulation (EWI)45%EDF EnergyEWI product with technical monitoring and digital records for enhanced quality and installation tracking.DuraShield Pro EWI
025Solar PV45%Octopus EnergyMCS certified monocrystalline PV modules with integrated optimisers and CCA/TAP modules for safety and monitoring.Anglo Solar PV monocrystalline solar panels with built in Tigo optimisers and CCA/TAP modules specifiedAnglo Solar
026Boiler25%Octopus EnergyMCS certified air-to-water ASHP with Appliance Function Check and extended warranty.Vaillant aroTHERM Plus ASHPVaillant
027External Wall Insulation (EWI)25%E.ON EnergyThe 60-year durability EWI is fixed through reinforcement mesh using
stainless steel pinned anchors. Stainless steel components are used for mechanical
fixings, render stop ends and corner beads.
JUB 60 Year EWIJUB
028Boiler25%EDF EnergyMCS certified air-to-water ASHP using R290 refrigerant
which comes with an extended 10-year parts and labour warranty, 10 years of
data, and access to 10 years of remote monitoring support from the manufacturer.
Trianco Activair High Temp ASHPTrianco
029Solar PV25%E.ON EnergyMCS certified monocrystalline PV modules, with optimiser
units. The optimised panel offers increased electricity production, by allowing
generation to continue if part shaded or fault.
InstaGen Solar PV MCS certified monocrystalline solar panels with Tigo optimisers and CCA/TAP modules specified
030External Wall Insulation (EWI)25%E.ON EnergyThe EWI product is produced using cement replacement technologies and also supports a reduction in embodied carbon.K Systems EWI when specified with K Systems HP14 ECO for basecoat and adhesive layersK Systems

Conclusion

Innovation measures in ECO4 represent a crucial aspect of the UK’s strategy to improve energy efficiency and reduce carbon emissions. By encouraging the development and adoption of new technologies, ECO4 not only helps to tackle the immediate challenges of fuel poverty and high energy bills but also positions the UK as a leader in the global transition to a low-carbon economy.

These measures, while still in the early stages of implementation, have the potential to transform how energy efficiency is approached in the UK. By providing targeted funding and support, the government is ensuring that innovative solutions are given the opportunity to prove their worth and contribute to the long-term success of the ECO scheme.

As these measures continue to be developed and refined, they will play an increasingly important role in helping the UK meet its carbon reduction targets, reduce energy costs for households, and improve the overall sustainability of the built environment. For stakeholders involved in the ECO4 scheme, understanding and engaging with innovation measures is essential for maximising the benefits of the programme and driving forward the next generation of energy efficiency solutions.