1. Introduction

Innovation governance under RIIO (Revenue = Incentives + Innovation + Outputs) refers to the legal and regulatory mechanisms through which the UK energy regulator, Ofgem/GEMA, encourages electricity and gas network companies to develop, test and deploy new technologies, business models and operational practices while protecting consumers from unnecessary costs.

The RIIO model is not simply a conventional price-cap regime. It combines revenue regulation with incentives, specified outputs and dedicated innovation mechanisms. Ofgem describes innovation as a means of helping networks provide safe, reliable and sustainable services while delivering value for money. (Ofgem)

The central legal problem is therefore:

How can a regulator encourage risky and uncertain innovation in a natural-monopoly network without allowing regulated companies to shift excessive innovation costs onto consumers?

RIIO attempts to answer this through a combination of ex ante allowances, competitive funding, licence conditions, governance documents, reporting requirements, incentives and regulatory oversight.

2. Meaning of RIIO Price Controls

RIIO stands for:

R – Revenue: the revenue that a regulated network company is allowed to recover.

I – Incentives: financial incentives encouraging better performance.

I – Innovation: mechanisms encouraging technological and operational innovation.

O – Outputs: measurable outcomes relating to reliability, connections, customer service, environmental performance and other regulatory objectives.

Ofgem regulates electricity transmission, gas transmission, electricity distribution and gas distribution through periodic price controls. The current framework has developed through RIIO-1, RIIO-2 and RIIO-3. (Ofgem)

RIIO-1 operated from 2013 to 2023, while RIIO-2 covered different network sectors beginning in 2021. RIIO-3 is now being implemented for the 2026–31 transmission and gas-distribution periods, with RIIO-ED3 scheduled for electricity distribution from 2028. (Ofgem)

3. Why Innovation Requires Special Governance

Energy networks have several characteristics that make innovation regulation difficult.

A. Natural monopoly

Electricity and gas networks are generally natural monopolies. Constructing several competing networks would often be inefficient. Consequently, customers depend on regulated network companies.

This creates a potential conflict:

Network company: wants commercially attractive investment.

Regulator: wants innovation that benefits consumers.

Consumers: should not finance unnecessary or unsuccessful experimentation.

Ofgem has expressly recognised that network companies may be unwilling to undertake speculative projects where commercial returns are uncertain, particularly where benefits arise from decarbonisation or environmental improvements that cannot easily be monetised. (Ofgem)

B. Long investment cycles

Electricity infrastructure can remain operational for decades. A regulatory framework designed only around short-term efficiency may therefore discourage investment in technologies whose benefits arise much later.

C. Technological uncertainty

A new battery technology, flexibility platform, hydrogen application, smart-grid technology or digital-control system may fail technically or commercially.

Consequently, innovation governance must permit reasonable regulatory experimentation without creating an unlimited guarantee of recovery.

4. Evolution of Innovation Governance Under RIIO

RIIO's innovation architecture has evolved over time.

Important mechanisms include:

Innovation Funding Incentive (IFI)

Low Carbon Networks Fund (LCNF)

Network Innovation Competition (NIC)

Network Innovation Allowance (NIA)

Innovation Roll-Out Mechanism (IRM)

Strategic Innovation Fund (SIF)

Regulatory sandbox and related innovation-support mechanisms.

Ofgem's RIIO-2 framework expressly recognised the NIA and SIF as successors to earlier mechanisms including IFI, LCNF and NIC. (Ofgem)

5. Network Innovation Allowance

The Network Innovation Allowance (NIA) is one of the most important components of innovation governance.

Under RIIO-2, the NIA provides network licensees with funding for research, development and demonstration projects that satisfy prescribed governance requirements. The current RIIO-2 governance framework covers projects relating particularly to the energy-system transition and consumer vulnerability. (Ofgem)

The NIA is therefore a form of regulated innovation funding.

Instead of requiring every innovative project to compete for funding, the allowance provides a controlled amount of funding that network companies can use for eligible projects.

6. Legal Structure of NIA Governance

NIA governance does not operate merely as voluntary guidance.

The RIIO-2 NIA Governance Document operates alongside specific licence conditions. Ofgem's current documentation identifies the relevant licence provisions for gas transporters, electricity transmission licensees and the electricity system operator. (Ofgem)

This produces a hierarchy:

Primary legislation

↓

Energy-sector regulatory powers

↓

Network licence conditions

↓

RIIO price-control determination

↓

NIA/SIF governance documents

↓

Individual innovation projects

This structure is important because it establishes legal accountability at several levels.

7. Innovation as a Regulatory Incentive

Innovation under RIIO is broader than a separate funding pot.

The basic RIIO philosophy is that companies should have incentives to discover better and cheaper ways of operating their networks.

Ofgem's RIIO-2 framework states that innovation is intended to be embedded in the broader RIIO framework, with dedicated funding reserved particularly for innovation that might not otherwise be delivered through ordinary business activity. (Ofgem)

This creates two levels of innovation:

Ordinary innovation

Innovation undertaken as part of normal business activity.

Supported innovation

More uncertain or speculative projects receiving dedicated regulatory support.

This distinction is crucial to avoid companies claiming additional consumer funding for activities that should already form part of efficient network management.

8. Governance Criteria for Innovation Projects

The NIA framework imposes eligibility and governance requirements.

A project must generally demonstrate that it falls within the permitted innovation objectives and satisfies the relevant governance rules.

The regulatory rationale is straightforward:

Publicly supported innovation should generate knowledge or benefits that justify regulatory support.

Ofgem's current NIA materials state that projects must meet requirements in the NIA Governance Document and that project-registration information and regular updates must be published. (Ofgem)

This creates three important governance principles:

Transparency

Projects and relevant information must be made publicly available.

Accountability

Network companies must explain expenditure and progress.

Regulatory supervision

Ofgem can establish and modify governance requirements.

9. Reporting and Regulatory Oversight

Innovation funding creates a potential principal-agent problem.

The regulator—the principal—cannot observe every technical decision taken by the network company—the agent.

Therefore, RIIO innovation governance relies on:

project registration;

reporting;

publication of project information;

expenditure monitoring;

governance requirements;

regulatory review;

evaluation of outcomes;

collaboration and dissemination.

Ofgem's 2025 decision concerning RIIO-ED2 NIA funding specifically notes that DNOs report NIA expenditure through Regulatory Reporting Packs and that Ofgem continues to examine ways of improving the tracking of innovation benefits and oversight of projects. (Ofgem)

10. The "Use It or Lose It" Principle

Innovation allowances can also be designed around a use-it-or-lose-it (UIOLI) structure.

The purpose is to prevent regulated companies from treating innovation allowances as guaranteed profit.

For RIIO-ED2, Ofgem described the NIA as a UIOLI allowance, allowing DNOs flexibility to allocate funding during the price-control period subject to the applicable registration requirements. (Ofgem)

The legal-economic effect is significant:

Allowance ≠ unconditional revenue entitlement.

Instead:

Allowance + eligible project + compliance with governance = legitimate innovation expenditure.

This protects consumers against simply increasing the regulated company's returns.

11. Strategic Innovation Fund

The Strategic Innovation Fund (SIF) provides another layer of innovation governance.

Unlike the NIA, which gives each network licensee an allowance for eligible projects, SIF is intended to support more ambitious innovation capable of accelerating the transition to net zero.

Ofgem describes SIF as a mechanism designed to fund ambitious projects capable of transforming future gas and electricity networks. It is delivered in partnership with Innovate UK. (Ofgem)

The distinction can therefore be expressed as:

12. Innovation and Net-Zero Governance

Modern RIIO innovation governance increasingly connects innovation with the UK's energy transition.

The present NIA framework expressly identifies projects addressing the energy-system transition and consumer vulnerability as objectives. (Ofgem)

This changes the traditional understanding of utility regulation.

Historically:

Regulation = reliable service + reasonable cost.

Increasingly:

Regulation = reliable service + reasonable cost + decarbonisation + flexibility + resilience + technological innovation.

Innovation governance therefore becomes part of climate and energy-transition governance.

13. Regulatory Sandboxes

Innovation sometimes fails because existing rules were designed for conventional technologies.

For example, a new flexibility platform, peer-to-peer electricity arrangement or digital energy service may not fit easily into existing regulatory classifications.

Ofgem therefore also uses regulatory sandbox support to help innovators understand how regulation applies to new products, services and business models. (Ofgem)

The sandbox approach reflects an important principle:

Regulation should sometimes permit controlled experimentation rather than requiring innovators to comply immediately with rules designed for a different technological environment.

This can reduce regulatory barriers while maintaining consumer and system safeguards.

14. Case Law and Regulatory Appeals

Direct reported judicial decisions specifically concerning innovation funding under RIIO are relatively limited. However, several important cases concerning RIIO price controls establish principles relevant to innovation governance.

Case 1: Wales & West Utilities Ltd v Competition and Markets Authority [2026] EWHC 99 (Admin)

This is particularly relevant to contemporary RIIO regulation.

Wales & West Utilities challenged aspects of the CMA's determination concerning its appeal from GEMA's RIIO-2 price-control decision.

The High Court explained that RIIO is an incentive-based framework under which GEMA determines both the revenue that regulated companies may recover and what companies must deliver in return. (Bailii)

Legal significance

The case demonstrates that RIIO decisions are subject to legal scrutiny.

Innovation funding therefore cannot be regarded as purely administrative discretion. Decisions concerning the regulatory framework may be challenged through the statutory appeal and judicial-review architecture.

The case also illustrates the importance of distinguishing:

GEMA's original price-control determination;

statutory appeals to the CMA;

judicial review of the CMA's determination.

15. Case 2: British Gas Trading Ltd – RIIO-ED1 Appeal (CMA, 2015)

British Gas challenged elements of Ofgem's RIIO-ED1 price control.

The CMA upheld part of British Gas's appeal while rejecting other grounds. Northern Powergrid separately challenged elements of the same price control. (Ofgem)

The CMA's determination illustrates the statutory ability to scrutinise GEMA's price-control methodology and, where appropriate, modify or substitute elements of the decision. (GOV.UK)

Relevance to innovation governance

Although this was not principally an innovation case, it establishes an important regulatory principle:

Ofgem's methodology must remain legally and economically defensible.

Innovation allowances therefore cannot be designed in isolation from the broader requirements governing revenue, efficiency, incentives and consumer protection.

16. Case 3: SSE Generation Ltd v Competition and Markets Authority [2022] EWCA Civ 1472

The Court of Appeal considered challenges concerning energy-market regulation and the statutory framework governing decisions of the CMA and GEMA.

The case demonstrates the importance of statutory interpretation and the limits of regulatory decision-making in the energy sector. (Bailii)

Relevance

For RIIO innovation governance, the broader lesson is that regulatory innovation must remain anchored to:

statutory powers;

licence conditions;

procedural fairness;

rational decision-making;

proper interpretation of regulatory duties.

Innovation cannot itself create regulatory authority where Parliament has not provided it.

17. Case 4: RIIO-2 Energy Licence Modification Appeals

The CMA's 2021 RIIO-2 appeals concerned GEMA's decisions relating to electricity transmission, gas transmission and gas distribution price controls. (GOV.UK)

These proceedings demonstrate that RIIO decisions operate within a structured statutory appeal mechanism.

The existence of such review is important for innovation governance because innovation funding affects:

allowed revenue;

expenditure;

consumer costs;

regulatory incentives;

investment decisions.

Consequently, innovation governance must be sufficiently transparent and reasoned to withstand regulatory scrutiny.

18. RIIO-3 and the Continuing Evolution of Innovation Governance

Innovation governance continues to evolve.

Ofgem's current framework includes RIIO-3 NIA governance, and the new framework contains mechanisms such as the Carry-over Network Innovation Allowance. (Ofgem)

This demonstrates an important characteristic of RIIO:

Innovation regulation itself is adaptive.

The regulator modifies governance rules when experience shows that existing arrangements are insufficient.

For example, in February 2026 Ofgem updated the RIIO-2 NIA governance framework so that electricity distribution network operators could continue registering projects beyond the earlier registration deadline. (Ofgem)

This is a practical example of adaptive regulatory governance.

19. Tension Between Innovation and Consumer Protection

The central legal tension can be represented as follows:

Too little regulatory support

→ innovation underinvestment
→ delayed technological transition
→ slower decarbonisation.

Too much regulatory support

→ inefficient expenditure
→ failed projects borne by consumers
→ weak incentives for commercial discipline.

RIIO attempts to occupy the middle ground through:

limited funding + eligibility rules + reporting + transparency + regulatory oversight + incentives.

20. Importance of Risk Allocation

A fundamental issue in innovation governance is who bears the risk of failure.

Suppose a network company invests in a new technology and the project fails.

There are three possible approaches:

Company bears all risk

Strong commercial discipline, but potentially insufficient innovation.

Consumers bear all risk

Strong incentive to experiment, but weak cost discipline.

Shared risk

The regulator permits controlled recovery for eligible innovation while requiring governance and accountability.

RIIO generally reflects the third model.

The NIA exists precisely because some projects have uncertain commercial returns and may not otherwise be pursued. (Ofgem)

21. Intellectual Property and Knowledge Sharing

Innovation governance also raises questions concerning intellectual property (IP).

If consumers contribute indirectly to the cost of an innovation project, a regulatory question arises:

Should the resulting knowledge remain entirely under the network company's control?

RIIO governance therefore places importance on collaboration, dissemination and making project information available.

The current governance framework expressly anticipates collaboration between network licensees and other participants. (Ofgem)

This supports a broader regulatory principle:

Publicly supported innovation should create system-wide learning rather than merely private corporate advantage.

22. Third-Party Participation

Another important development is the attempt to increase participation by organisations outside traditional network companies.

Ofgem's RIIO-2 framework specifically identified greater third-party engagement as an area for innovation-funding reform. (Ofgem)

This is important because innovation increasingly originates from:

technology companies;

universities;

start-ups;

software companies;

storage developers;

flexibility providers;

consumer organisations.

The network company therefore increasingly acts as a platform for innovation, rather than being the exclusive source of innovation.

23. Principles of Good Innovation Governance Under RIIO

A legally sound RIIO innovation framework should satisfy at least eight principles:

1. Legality

Funding must remain within statutory and licence-based authority.

2. Proportionality

Innovation funding should correspond to the regulatory problem.

3. Transparency

Projects, funding and outcomes should be sufficiently visible.

4. Accountability

Companies should demonstrate how money was used.

5. Consumer protection

Customers should not finance unnecessary experimentation.

6. Additionality

Dedicated innovation funding should support projects that would not otherwise occur.

7. Knowledge dissemination

Successful and unsuccessful experiments should generate system-wide learning.

8. Adaptability

Regulatory rules must evolve as technology and energy-system requirements change.

24. Critical Legal Issues

Several issues remain significant.

A. Regulatory discretion

Ofgem must balance competing statutory objectives without exceeding its legal powers.

B. Measurement of innovation benefits

Some benefits—especially decarbonisation, resilience and flexibility—are difficult to quantify.

C. Attribution

It can be difficult to establish whether a project succeeded because of regulatory support or because the technology would have developed commercially anyway.

D. Risk of regulatory capture

Close cooperation between regulator and industry is useful but can create concerns about excessive industry influence.

E. Consumer participation

Consumers ultimately finance regulated network expenditure, yet they may have limited ability to participate directly in technical innovation decisions.

F. Technology neutrality

Regulation should avoid unnecessarily selecting particular technologies when alternative technologies may deliver equivalent outcomes.

25. Conclusion

Innovation governance under RIIO represents a transition from traditional utility price regulation toward adaptive, incentive-based and innovation-oriented regulation.

The framework recognises that natural-monopoly energy networks will not necessarily undertake socially valuable innovation solely through ordinary commercial incentives. RIIO therefore combines the general incentive structure of the price control with dedicated mechanisms such as the NIA and SIF, supported by governance documents, licence conditions, reporting and transparency requirements. (Ofgem)

The legal significance is that innovation is not an unrestricted subsidy. It operates within the statutory and licensing architecture of energy regulation. The RIIO-ED1 and RIIO-2 appeal decisions, together with more recent litigation such as Wales & West Utilities v CMA, demonstrate that price-control decisions remain subject to structured regulatory and judicial scrutiny. (Bailii)

Ultimately, RIIO's innovation model attempts to create a controlled regulatory environment for experimentation: companies receive incentives and, where appropriate, dedicated funding to undertake uncertain projects; in return, they face eligibility rules, transparency obligations, reporting requirements and regulatory oversight.

Thus, innovation governance under RIIO can be understood as a form of adaptive energy regulation in which the regulator does not merely control prices, but actively designs institutional conditions under which technological experimentation can occur while maintaining consumer protection, network reliability and accountability.

Key authorities and materials

Ofgem, Energy Network Price Controls / RIIO framework. (Ofgem)

Ofgem, RIIO-2 NIA Governance Document, Version 4 (2026). (Ofgem)

Ofgem, RIIO-2 Framework – Driving Innovation and Efficiency. (Ofgem)

Ofgem, Strategic Innovation Fund Governance. (Ofgem)

Wales & West Utilities Ltd v Competition and Markets Authority [2026] EWHC 99 (Admin). (Bailii)

SSE Generation Ltd v Competition and Markets Authority [2022] EWCA Civ 1472. (Bailii)

British Gas Trading – RIIO-ED1 appeal, CMA Final Determination (2015). (GOV.UK)

RIIO-2 Energy Licence Modification Appeals, CMA Final Determination (2021). (GOV.UK)