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Recent evidence shows that energy cost pressures and a power grid capacity crunch risk becoming a bottleneck on the growth of the UK’s digital economy.

A report by Oxford Economics for the Nuclear Industry Association warns that growing grid capacity constraints and uncompetitive industrial electricity prices could drive data center developers overseas.

This comes as data center energy demands could increase fivefold by 2035 and data center operators face growing pressure for more sustainable energy in line with climate targets.

This is driving many data center developers to explore alternative supply sources such as flexible contracts and Corporate Power Purchase Agreements (CPPAs) which offer affordable, secure long-term power.

Yet many data center developers lack the resources to navigate these complex contracts or meet the high credit requirements.

There is an urgent need for creative new solutions to provide affordable sustainable power for our digital economy.

The energy chokepoint for the AI economy

The Government aims to make Britain the fastest AI -adopting country in the G7 and this will require accelerated data center expansion with AI data centers being prioritized for new demand connections to the grid. While this is welcome, demand-side connections will not alleviate the supply-side challenges from rising electricity costs to network capacity constraints.

Data centers have build times of 12-14 months yet large new renewable energy projects can face waits of 12-14 years to come online at a time when Britain faces rising non-commodity electricity costs such as Transmission Network Use of System (TNUoS) and Nuclear Regulated Asset Base (RAB) charges to fund new electric grid and nuclear energy infrastructure.

Ofgem has warned that data center power consumption could significantly exceed Britain’s current peak electricity consumption, risking rising energy costs.

The move towards flexible contracts

Flexible electricity contracts that allow companies to buy energy in chunks offer a potential solution to this by allowing data centers to tailor energy costs to their consumption.

Crucially, flexible contracts can be adjusted to hedge against fluctuating energy consumption for facilities such as AI data centers which have more variable patterns of energy use. This would also help avoid penalties for ramping up energy use to take on major new customers.

While fixed-price contracts can lock in long-term energy costs to offer certainty, flexible contracts enable data centers to take advantage of price fluctuations to secure cheaper power.

For example, we have a dedicated pricing team monitoring market movements round the clock. This could help facilities partially hedge against the risk of rising prices, setting a price for a portion of their consumption, while buying the rest when required to take advantage of favorable prices on the spot market.

For example, we implemented a flexible contract for an energy-intensive industrial chemicals company which included a cash-out arrangement, enabling them to lock in prices when costs are low and buy power in batches days or even months ahead as needed.

There are various kinds of flexible contract options based on the degree to which companies can forecast their energy consumption. For example, ‘tolerance banding’ which guarantees a set price within a certain range or ‘band’ of electricity consumption, can provide certainty amidst unpredictable, fluctuating costs.

As data center operators become more confident in forecasting energy consumption, this can create even cheaper options such as contracts that enable them to buy every kilowatt-hour above or below expected demand.

The CPPA model

Other contracts such as CPPAs could offer data centers a secure, sustainable, affordable power supply directly from suppliers at stable cost. Private-wire PPAs involving onsite generation could enable data centers to sell surplus power back to the grid, transforming energy from a cost into a revenue stream. On site generation could also help avoid the non-commodity costs for grid electricity such as TNUoS charges that comprise 60% of electricity bills and are set to increase to fund new infrastructure.

With targets to reduce operational emissions from buildings by 76%, CPPAs also help facilities meet climate targets by providing traceable green power. As large consumers with a relatively stable long-term demand, data centers are perfectly placed to tap into this market. Amidst growing energy price volatility and security risks, fixed-price CPPAs offer the chance to lock in power prices and supplies, providing certainty and security.

The barriers to alternative contracts

Yet there are many barriers to flexible contracts and CPPAs market for smaller entities such as data centers. These contracts can be highly complex, contain stringent credit requirements and often require 10-15 year agreements. The Contracts for Difference (CfD) scheme, which gives renewable developers a government-backed route to market through fixed long-term price support, can also act as a competing route to market for generators.

In some cases, this can make long-term corporate offtake agreements less attractive, particularly where developers can secure greater certainty through the CfD mechanism. For smaller customers seeking greener electricity, however, this route can offer an alternative when a direct CPPA may be harder to access.

Many data center projects are run by startups or smaller entities that lack the resources for such long-term commitments or credit requirements. Data centers also present a slightly higher credit risk than other facilities because their revenue streams are not based on a few large, long-term customers but split among many customers across the digital economy.

Opening the market to data centers

There is an urgent need for creative solutions to lower barriers to entry to the flexible contract market for smaller entities such as data centers. Security deposits or bank guarantees can help some firms meet the stringent credit requirements.

Other potential solutions include parent-company guarantees where a parent company makes a commitment to cover the cost in the event of a default or intercompany guarantees where large data center customers such as Amazon offer guarantees.

There are also solutions to simplify adoption and help CPPAs slot into existing energy use. For example, PPA import sleeving contracts, where energy is pre-purchased from a generator or utility and supplied directly to a facility through the grid, can help alleviate energy costs and security risks.

Tailoring contracts to specific energy needs

Independent partners can also help data centers optimize contracts for their specific energy needs and financial situation. Independent brokers can consolidate the process of negotiating with generators, suppliers and investors, speeding up and de-risking adoption.

Brokers can also help negotiate and monitor contracts suited to the precise profile of each data center. For example, cloud computing data centers with relatively steady, predictable demand may prefer fixed contracts whereas AI data centers processing huge amounts of data for many clients have a more variable, ‘peaky’ pattern of consumption and require flexible contracts.

Data centers can also work with partners to get live market intelligence on changing regulations or market movements. For example, we offered one client an early warning service so that they were able to minimize costs during the winter triads, half-hour periods of peak demand during the winter season.

Towards a new model of data center energy

Britain’s ability to compete in the accelerating AI race increasingly hinges on the ability to mitigate the risk of rising energy costs.

Energy security will also be critical to building truly sovereign AI capabilities for the UK. Lowering the barriers to the flexible contract market could create new opportunities at both ends, providing secure, sustainable and affordable power to unlock data center growth while unlocking vital investment in new renewable energy capacity.

Yet this will require tailored, adaptable contractual models from bespoke flexible contracts to PPAs and new ways of lowering barriers to entry including reducing complexity and stringent credit requirements. This could help provide secure, sustainable and affordable long-term power to fuel our digital economy.

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Pronunciation: HEE'-lee-uhs-feer

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