Project Summary

Project VOLT Alpha builds on earlier work to develop and validate how multi-vector microgrids can help industrial and commercial sites decarbonise, improve resilience, and provide flexibility. With support from Newcastle Airport, Port of Tyne, Nissan, Pulsant, and Severfield, it targets high-emission zones like ports, airports, and data centres. The Alpha phase will deliver scalable microgrid blueprints and operational processes aligned with national and regional strategies. Backed by NECA, NESO, NGET, and new partners EDF and Wales&West Utilities, VOLT supports the Clean Flexibility Roadmap by unlocking I&C flexibility and accelerating GB's transition to a low-carbon, resilient energy system.

Innovation Justification

Innovation challenge theme

Project VOLT offers a novel, ambitious approach to industrial decarbonisation and energy system resilience. It unlocks flexibility from I&C customers and delivers replicable regional energy system models, directly addressing SIF Round 4 Challenge 1 -- Theme 2. Building on Discovery , Alpha shifts from feasibility to deliverability, developing multi-vector microgrid models tailored to different customer types. These models support regional balancing, accelerate low-carbon deployment, and enhance resilience for both networks and customers.

Unlike traditional single-vector microgrids, VOLT pioneers a multi-vector framework integrating electricity, gas, hydrogen, and storage. This enables co-optimisation across carbon, cost, and resilience, delivering dynamic load balancing, peak shaving, and system flexibility. The Alpha Phase will produce detailed blueprints, quantify system-level benefits, and align operations with planning frameworks (RESP, SSEP).

VOLT is well-suited to SIF due to its whole-system scope and cross-network coordination. It tackles regulatory, commercial, and operational barriers beyond BaU mechanisms. The project is grounded in real-world constraints and supports the evolution of flexible, low-carbon energy markets.

Novelty and state-of-the-art advancement

VOLT represents a step-change in industrial energy design, integrating multiple vectors and co-optimising across cost, carbon, and resilience. This surpasses conventional models focused on single objectives. Advanced system modelling will simulate microgrid operations across diverse industrial sites, capturing interactions between demand, constraints, and planning.

The project will assess how microgrids support regional balancing, black start capability, and low-carbon connections, while aligning with RESP, SSEP. By combining technical feasibility with stakeholder-specific design and whole-system coordination, VOLT delivers a scalable, replicable blueprint for industrial decarbonisation.

Building on Discovery

The Discovery Phase validated the feasibility of multi-vector microgrids and their potential to meet carbon, cost, and resilience goals when coordinated with upstream networks. It also identified key regulatory, commercial, and system-level challenges, shaping Alpha's focus on deliverability.

To address these, the consortium now includes NGET, Wales&West Utilities, and NECA, ensuring full consideration of transmission, regional planning, and system coordination. The customer base has expanded to include Pulsant (data centre) and Severfield (steel manufacturer), enabling testing across varied operational profiles. These additions reflect growing demand for resilient, low-carbon solutions in energy-intensive sectors. Letters of support are attached to this question, (NGET's submitted separately).

Lessons from Discovery and other SIF projects like ReFLEX and Distributed ReStart confirm the need for tailored, scalable models aligned with stakeholder priorities. VOLT Alpha is designed to meet this need.

Technical and commercial readiness

At Discovery's end, VOLT had reached:

TRL3--4: Concept validated; initial modelling complete.
IRL2--3: Early integration with network data and planning.
CRL2--3: Strong stakeholder and customer interest.
By Alpha's end, VOLT aims for:

TRL5: Operational models tested across industrial sites.
IRL4: Integration with RESP, SSEP, and planning frameworks.
CRL4--5: Defined route-to-market with tailored value propositions
Why SIF?

VOLT's complexity, systemic scope, and cross-sector coordination place it beyond the remit of BaU funding. It addresses uncertain data, regulatory gaps, and stakeholder engagement needs not typically resourced. The project prioritises consumer protection, resilience, and strategic planning---aligning with SIF's public benefit mission.

Stakeholder engagement and co-design

Alpha has been shaped through collaboration with EDF, NESO, NGET, Wales&West Utilities, and NECA. Their input ensures the project addresses challenges across the energy system. Engagement with new customer sites ensures replicability across diverse users. This inclusive approach fosters transparency, challenge, and collaboration, reinforcing VOLT's system-wide impact.

Counterfactuals

Without multi-vector microgrids, I&C customers would face up to 62% higher energy costs and 47% higher emissions, as shown in Discovery baselines for customers. VOLT Alpha offers a scalable, practical solution to meet decarbonisation needs, enhance resilience, and unlock I&C flexibility---supporting government objectives. Only SIF can enable a whole-system, multi-party innovation with public benefit at its core.

Impacts and Benefits

Impacts and benefits description 
Project VOLT offers substantial benefits for customers, networks, and wider stakeholders. Multi-vector microgrids reduce peak network loads, deferring reinforcement and enabling faster renewable connections. Coordinated regional microgrids provide flexibility and resilience services, while helping I&C customers cut energy costs, improve security, and meet decarbonisation goals. The project also strengthens the business case for commercialising new technologies, supporting regional development in line with the Government's Clean Energy Superpower Mission.

Pre-innovation baseline and challenges

I&C sites currently depend on centralised energy supply, resulting in high costs, emissions, and limited flexibility. Most demand is met via direct electricity and gas imports, with peak usage driving grid congestion and reinforcement needs. Fossil fuel reliance increases emissions, and industrial flexibility and multi-vector integration remain largely untapped.

Forecast net benefits

If adopted as BaU, VOLT could deliver:

£19-40 million in avoided network reinforcement over 25 years by reducing peak demand and optimising cross-vector flows.
15-62% annual energy bill savings per I&C customer via on-site generation, renewable export optimisation, demand-side management, and reduced peak-time grid reliance.
Up to 1,800 tonnes of direct CO₂ savings annually from reduced fossil fuel use.
10,000-40,000 tonnes of indirect CO₂ savings annually by reducing reliance on carbon-intensive peaking plants.
Up to £1 million in lifetime flexibility revenue for industrial users.
Resilience benefits valued at up to £1 million/year (or £3 million/year for mission-critical sites), based on Value of Lost Load estimates.
Alpha benefits

While Alpha won't deliver direct consumer benefits, it will generate outputs valuable to I&C customers, networks, NESO, and planners:

Design blueprints and operational processes for different customer types, with case studies applicable across GB, enabling decarbonisation without major network upgrades.
Policy and regulatory recommendations and a deliverability roadmap to support innovation trials or BaU development.
CBA toolkits and guidance to support future trials and deployments.
Flexibility potential analysis and alignment with NESO system operation strategies, including recommendations for new products supporting the Clean Flexibility Roadmap.
System coordination insights at regional and national levels, feeding into RESP, SSEP, NECA's Spatial Development Strategy, and the Energy Review.
A Beta phase roadmap, detailing how Alpha insights will transition into real-world demonstrations, identifying optimal sites, readiness requirements, and integration pathways with decarbonisation and network plans.
'Other' benefits: social and equity impacts

VOLT also delivers broader societal and environmental benefits:

Attracting investment by offering cost-effective, resilient energy to high-demand users.
Creating green jobs and high-value employment.
Strengthening local supply chains.
Driving innovation aligned with GB's energy transition.
Supporting decarbonisation of high-energy users, improving air quality.
The accompanying CBA and Business Case use Discovery Phase outputs and current BaU assumptions, including existing energy demand levels. Further analysis during Alpha will refine these based on evolving demand and generation trends through 2050. This will inform key cost--benefit metrics such as peak demand reduction, flexibility market participation, and energy bill savings, using WP2, WP5, and WP7.

Beta phase vision

In Beta, VOLT will move from design to demonstration at one or more I&C sites, combining real-world deployment with simulation to validate Alpha findings.

The Beta phase will:

Deploy a pilot multi-vector microgrid integrating renewables, battery storage, hydrogen CHP, and smart controls.
Demonstrate flexibility provision to NESO and DSO markets.
Quantify system and customer benefits: emissions reduction, peak shaving, deferred upgrades, improved continuity, and resilience.
Test commercial models and market participation mechanisms.
Validate digital and control tools for on-site and system-level coordination.
Establish a roadmap for scaling from innovation to BaU deployment across GB.