Energy efficiency at scale: What data centres can teach us about energy use

Data centres are widely known for their high energy consumption. With the potential to contain tens of thousands of servers that store, process and distribute vast amounts of data, they require a substantial amount of energy to operate continuously. However, what you may not realise is that some of the most advanced energy efficiency practices are being developed and deployed at scale in these facilities.

At SSE Energy Solutions, we believe data centres are setting the standard for large scale operations, showing how you can maximise performance, minimise waste and scale sustainably.

Lessons from data centres

From heat recovery systems to onsite generation solutions, data centres offer important lessons in energy management to improve efficiency, resilience and sustainability.

Temperature management

Temperature management is one of the biggest challenges facing data centres, due to the significant amount of heat generated from the servers. Without proper management, the high temperature can cause equipment failure, service disruption and even data loss. Industry guidelines recommend maintaining a temperature between 18°C and 27°C, ensuring reliability and longevity of equipment.

Data centres have developed sophisticated temperature management systems, such as hot and cold aisle containment. However, they have also implemented heat recovery systems, helping decrease their emissions and increase their efficiency, while contributing to a more sustainable energy future.

Cost management

Cost management is a critical focus for data centres, where energy expenses typically account for 25-40% of total operational expenditure. In the UK, wholesale electricity prices have been extremely volatile in recent years, due to factors such as foreign conflicts and supply constraints. This instability makes energy efficiency not just an environmental priority, but a financial necessity.

Data centres have invested in advanced energy management systems, optimising their cost and energy efficiency. Many data centre operators are also eligible for an Energy Intensive Industries (EII) certificate, exempting them from indirect costs associated with funding Contracts for Difference (CFD), the Renewables Obligation (RO) and the Feed in Tariff (FIT).

Grid connections

Securing grid connections is a major hurdle for data centres in the UK. As demand has grown, some data centre operators have faced delays of up to seven years. In a recent survey by BCS, the Chartered Institute for IT, over 3,000 data centre professionals were reported to be concerned about the country’s ability to meet the increasing demands of data centres.

The National Energy System Operator (NESO) has introduced connections reform, to create a more transparent and efficient process for projects to connect to the grid. While this is considered a much needed improvement, there are still expected to be delays. Some data centre operators have even decided to invest in interim solutions, such as onsite renewable generation, gas fire generation and storage.

Sustainability targets

Sustainability is high on the list of priorities for data centres. The UK government's commitment to achieving net zero carbon emissions by 2050 has placed increasing pressure on operators. Not to mention, around 60% of large UK organisations now require their suppliers to demonstrate strong environmental credentials.

Data centres are adopting a range of measures to meet their sustainability targets. Many are increasing their use of renewable energy, by securing corporate power purchase agreements (CPPAs) or installing onsite generation systems. They are also investigating energy storage systems and waste management solutions, ensuring the industry is contributing to national climate objectives.

Solutions for major energy users

At SSE Energy Solutions, we support data centres and other major energy users by providing tailored energy solutions, helping reduce emissions and manage costs.

Flexible supply agreements

Manage costs through a flexible supply agreement by hedging energy at optimal times to benefit from market conditions. Include a PPA to cover part of your energy needs with renewable and reliable power.

Power Purchase Agreements (PPAs)

Direct access to renewable energy generation, providing energy certainty and sustainable responsibility. With a Power Purchase Agreement (PPA), you can secure fixed costs for the duration of your contract, so that you can budget with confidence.

Grid connections

Control how your energy is procured and managed. Through flexible designs, we provide resilience, reliability and the flexibility to integrate renewable sources and advanced technologies tailored to your specific needs, helping to future proof networks.

Generation technologies

Onsite and offsite generation technologies, delivering renewable energy from solar, wind and hydro assets. Report zero carbon emissions for your business, and demonstrate your sustainability to customers, clients and stakeholders.

Storage systems

Store excess power for use during peak demand periods. Implement battery storage systems to support the grid, enhance your resilience and facilitate the integration of renewable energy sources.

Heat recovery

Minimise waste with heat recovery solutions. By capturing excess heat, you can decrease your greenhouse gas emissions and increase your energy efficiency, while supplying other businesses, organisations and communities.