The hidden cost of convenience: how the AI boom could influence your household finances

From the AI assistant helping plan your next holiday to the streaming service delivering your Friday-night entertainment, our increasingly digital lives have an appetite for electricity. But could the technology making life easier also be subtly reshaping our household finances?

There’s something rather extraordinary about the invisible infrastructure behind modern life. We can transfer money in seconds, stream almost anything on demand and ask artificial intelligence to solve everything from a tricky homework question to what to cook for dinner. It’s effortless. Or at least, that’s how it feels.

Behind the scenes, however, an increasingly sophisticated network of data centres is working around the clock to make it all possible. And while these vast, computer-filled facilities rarely feature in conversations about the cost of living, their growing demand for electricity is attracting considerable attention. According to National Grid forecasts, data centres currently account for approximately 2.6% of Britain’s electricity consumption, a figure that could rise to 9% by 2035.

That’s quite a change, and it’s a change that is well worth understanding.

The digital world has a real-world footprint

Think of a data centre as the engine room of our digital existence. Inside, thousands of servers process, store and deliver the information we’ve come to rely upon. Unlike most workplaces, they don’t clock off at five. The computers operate continuously, generating heat that requires substantial cooling systems to keep everything running smoothly.

As our appetite for AI and other digital services grows, so does the infrastructure required to support it. National Grid has outlined plans to build significant new electricity resources over the coming years, with data centres representing a substantial proportion of that growth. Of course, this isn’t simply a story of rising costs. Digital infrastructure supports businesses, innovation and economic development. The challenge is ensuring that the investment needed to power this transformation is managed fairly and efficiently.

A glimpse into the future?

Ireland offers an interesting perspective. Having attracted considerable investment from major technology companies, the country has experienced a remarkable increase in electricity demand from data centres. By 2025, these facilities accounted for approximately 23% of Ireland’s electricity consumption, compared with just 5% a decade earlier. That growth has prompted questions about energy infrastructure, investment and how the associated costs should be shared.

Research commissioned by Friends of the Earth has suggested that data-centre-related costs could add around £90 annually to an average Irish household’s electricity bill. It’s an estimate rather than a universal charge, and Britain’s energy market operates differently, but it illustrates why the issue is receiving attention.

The question for British households isn’t whether we should embrace digital progress. It’s how we accommodate it without overlooking the financial implications.

From electricity bills to investments: where might we feel the effects?

The most obvious connection is our energy bill. But look a little closer and the picture becomes more interesting.

Energy – the price of keeping everything connected: Britain’s electricity network requires substantial investment to accommodate changing demand, new generation and the transition towards cleaner energy. National Grid has announced plans for investment of tens of billions of pounds, and some infrastructure costs are inevitably going to be recovered through our electricity bills. Data centres are one contributor to that demand, although far from the only one. How much additional cost households might bear will depend on regulation, investment decisions and how network charges are allocated.

Property – when digital demand meets physical space: Perhaps more surprisingly, data centres can also compete with housing developments for something less visible than land: access to electricity. In 2022, the Greater London Authority raised concerns about electricity network constraints affecting proposed housing developments in parts of West London, where data-centre demand was one of the pressures involved. Housing affordability is influenced by a multitude of factors, so it would be misleading to draw a direct line from data centres to higher house prices. Nevertheless, competition for infrastructure capacity is another consideration in an already complex property market.

Insurance – the importance of keeping pace: For homeowners, the more immediate consideration is the changing cost of rebuilding a property. Energy, labour and materials all influence rebuilding costs, and these can change considerably over time. While data centres aren’t a direct explanation for insurance premiums, broader economic pressures make regular reviews of your buildings insurance particularly worthwhile. After all, a policy that suited your home several years ago might not reflect today’s rebuilding costs.

Mortgages – another piece of the economic puzzle: Electricity prices can influence inflation, which in turn is one of many factors considered when interest rates are set. It would be a stretch to suggest that data centres will determine the direction of mortgage rates. But understanding the wider forces influencing inflation can be useful, particularly when approaching the end of a fixed-rate deal.

Pensions and investments – opportunity meets concentration: There’s another side to the AI story. Many global investment funds hold shares in major technology businesses involved in developing AI and the infrastructure supporting it. For anyone with a pension invested in global equities, that may mean some exposure to the sector’s potential growth, as well as its risks. The important consideration isn’t whether AI is fashionable today, but whether your investments remain appropriately diversified and aligned with your longer-term objectives.

Businesses – resilience in a connected world: For businesses, digital infrastructure is both an extraordinary advantage and a potential vulnerability. Cloud services, payment systems and online platforms have become essential to everyday operations. An interruption to a critical service can have commercial consequences, even when the problem originates miles away. Business interruption and cyber insurance may offer protection in certain circumstances, although cover varies considerably and depends on the policy wording. It’s another reason why understanding the detail of your insurance matters just as much as the price.

Progress is inevitable…

Artificial intelligence is changing the way we live and work, and the infrastructure behind it will continue to evolve. Much of that change brings genuine opportunities, from greater efficiency to new possibilities for businesses and consumers.  But as the world around us becomes more sophisticated, it’s worth making sure our financial arrangements aren’t standing still – because while we can’t predict the changes on the horizon, we can help make sure we’re better prepared for whatever comes next.

That doesn’t mean making dramatic changes. Quite the opposite – often, it’s small financial decisions that can help make the greatest difference, such as checking your home is adequately insured, understanding your business risks, reviewing your mortgage options ahead of renewal or making sure your longer-term financial plans still reflect your retirement ambitions.

The world doesn’t stand still, and neither should your financial plans. At KGJ, we’ve been helping individuals, families and businesses navigate changing circumstances since 1969. We believe good advice begins with understanding what’s important to you as well as reacting strategically to wider circumstances. Our team can help you review your arrangements, explore your options and make informed decisions with confidence.

Contact us today, to review your cover or investments.

This article is provided for general information and does not constitute personal financial advice. Insurance cover is subject to individual policy terms, conditions and exclusions.