When most people hear the phrase “net zero”, they think of wind turbines, electric cars and government targets. What they do not picture is one of the UK’s largest gas-fired power stations.

Yet that is exactly why Pembroke, in West Wales, is one of the most interesting examples of Britain’s energy transition. Rather than abandoning existing infrastructure, the Pembroke Net Zero Centre is demonstrating how it can be transformed — bringing together large-scale battery storage, green hydrogen production, floating offshore wind from the Celtic Sea and, potentially, carbon capture into a single integrated energy hub.

This matters because the transition to a low-carbon economy is no longer just about generating renewable electricity — it is about delivering reliable power every minute of every day, a challenge that has grown far more urgent with the rise of artificial intelligence. The AI revolution is often framed as a story about semiconductors and software, but beneath the headlines lies a larger investment theme: electricity. Every new generation of AI data centres demands dependable, low-carbon power, backed by resilient networks of batteries and smart grids. This is where Pembroke’s vision becomes compelling.

Battery storage alongside renewable generation allows surplus electricity to be stored when production is high and released when demand rises. Green hydrogen offers another way of storing renewable energy while decarbonising industries that cannot easily be electrified. Floating offshore wind in the Celtic Sea taps one of Europe’s most promising new resources. Together, these form an energy ecosystem — and point to a broader investment theme than renewable energy generation alone.

The sectors potentially exposed to this transition include battery technology, grid infrastructure, power electronics, hydrogen production and the materials needed to build all of it, although outcomes will vary and not every company or project in these areas will prove successful.

Wales has been quietly positioning itself at the centre of that trend for years — something we see first-hand through the number of clients we work with in the region who are engaged with, or affected by, this changing economy. With world-class offshore wind resources, an established industrial base, deep-water ports and projects like Pembroke, Wales is showing that clean energy’s future is not about replacing one technology with another, but integrating several into a system that delivers secure, affordable and increasingly carbon-free power.

For ethical and impact investors, this is particularly encouraging. Investments that improve energy resilience, accelerate decarbonisation and enable the digital economy need not be mutually exclusive — increasingly, they are becoming one and the same.

As with any long-term investment theme, the path is unlikely to be smooth. Policy changes, project delays, technology costs, company valuations and market conditions can all affect outcomes for investors.

Perhaps the biggest lesson from Pembroke is that the net zero economy is no longer a distant aspiration or a political slogan. It is being built today: creating skilled jobs, attracting investment and laying the foundations for industries that could define global growth for decades to come.

Recent record-breaking heat across the UK and Europe is a reminder of how much is riding on this transition happening at pace. Wales deserves credit for showing what practical progress can look like. Sometimes the future is not found in Silicon Valley. Sometimes it is found on the coast of West Wales.