Comment by - James Wood-Robertson, Partner, Shoosmiths’ Commerical Team
In the government’s drive to position the UK as a leader in the global digital economy, a commitment set out in its Industrial Strategy and AI Opportunities Action Plan, the rapid expansion of data centres has become a defining feature of national infrastructure development. The digital economy promises significant direct benefits through job creation and tax revenues, alongside broader economic gains including supply chain development, digital innovation, and foreign direct investment.
There is also a strategic imperative. As with energy, the UK cannot afford to become overly dependent on other countries for critical digital infrastructure. Sovereign data capacity is increasingly fundamental to economic resilience, national security, and technological competitiveness.
At the same time, the UK has committed to fully decarbonising the electricity system by 2030. As demand for data centre capacity accelerates at an unprecedented pace, access to a secure, deliverable, and affordable supply of clean energy has therefore shifted from a secondary consideration to a strategic constraint.
Data centres are among the most energy intensive assets in the economy, requiring large volumes of electricity delivered with exceptional reliability, 24 hours a day. Even momentary power interruptions can have severe operational and financial consequences. Historically, developers prioritised fibre connectivity and proximity to major conurbations. Today, grid capacity, energy resilience, and decarbonisation are equally decisive in determining where, how, and how quickly new facilities can be built.
This creates a growing challenge in the UK. Electricity demand from data centres is rising faster than grid infrastructure can be reinforced. Constrained substations, limited transmission capacity, and lengthy connection queues are already influencing development timelines and site selection. In parallel, the transition to a more decentralised, renewables-led electricity system is increasing the complexity of maintaining system reliability.
Against this backdrop, data centre operators are adopting more sophisticated energy strategies. Long-term power purchase agreements with renewable generators are becoming increasingly common, providing price certainty and a credible pathway to meeting net-zero commitments. On-site and near-site generation, including solar and battery storage, is also gaining traction as a means of improving resilience and reducing exposure to grid constraints.
Within this evolving mix, biomethane is emerging as a practical solution to several of these challenges. Produced from organic waste and injected into the existing gas grid, biomethane offers a dispatchable, reliable, and low carbon energy source that can support data centre operations where electricity supply is constrained. Crucially, it leverages existing gas infrastructure, allowing significantly faster deployment than major grid reinforcements. Biomethane is also particularly well suited to backup and resilience applications, enabling the replacement or deep decarbonisation of traditional diesel generation. For developers facing grid delays or seeking to strengthen energy security, it provides a timely and deliverable route to firm, clean power.
Looking further ahead, the sector is also exploring additional sources of low carbon firm power, including the potential deployment of small modular nuclear reactors. While these technologies remain longer term prospects, they reflect a broader shift. Data centres are no longer passive energy consumers, but increasingly active participants in the energy system.
Flexibility will be central to this role. Through demand side response, storage, and controllable on-site generation, data centres can support wider grid stability while enhancing their own resilience. As the electricity system continues to decarbonise and reliance on intermittent renewable generation grows, this capability will become increasingly valuable.
Ultimately, the future of data centre development will be shaped not only by digital demand, but by energy deliverability. Secure, clean, and flexible power is now foundational infrastructure for the digital economy. Those developers who recognise this shift and act decisively, across both data and energy, will be best placed to support growth in one of the UK’s most strategically important sectors.
