Understanding the macroeconomic benefits of the low-carbon energy transition

Stephen Hall from University of Leeds and Jeffrey Hardy from Imperial College London write an important article on The Conversation website about their research assessing what the benefits will be to the British economy from transitioning to a low-carbon economy. This does not even include the benefits from addressing energy demand.


Britain’s switch to low-carbon energy could give a £21 billion boost to the economy

To fight climate change and meet the Paris Agreement targets the world will need to rapidly switch from fossil fuels to renewable or nuclear energy. According to the International Energy Agency, this will require up to US$5 trillion (£3.7 trillion) of new investment by 2040.

There’s always lots of talk about how much this will cost and whether low-carbon electricity can still be cheap for consumers. But the flip side to every cost is a revenue – and what has received less attention is the size of the opportunity that will be created for green growth and new investment.

To figure this out, we need to explore which “mixes” of technology would meet decarbonisation targets. In some UK scenarios, for instance, existing fossil fuel power stations would be converted to capture and store their carbon emissions, while others involve a complete renewal of the whole sector through bottom-up, localised energy systems.

Modelling and scenario building is a great way to test out possible futures without having to experiment with the whole electricity system in real time. But, while they can tell us a lot about what technology is required and what it will cost, these scenarios don’t say very much about what kind of value new energy systems will create and for whom.

This is where our research comes in. Together with colleagues, we have analysed how new markets are created and destroyed within these UK electricity system scenarios. These new markets include large-scale low-carbon generation, such as offshore wind or new nuclear power stations, and the provision of new services, such as charging infrastructure for electric vehicles.

Our work shows that in these new markets electricity utilities could access up to £21 billion per year of new value by 2050. In context, that would be worth up to 30% of the total energy market that year.

Understanding how the transition to low-carbon energy might cause certain sectors to grow or shrink is important because, first, it helps utilities plan for the future. Our work shows that large-scale low-carbon generation, for example offshore wind, could be worth up to £8 billion annually by 2050. However, in scenarios in which electricity demand is met through decentralised, smaller-scale systems, big offshore wind farms are needed much less. In that scenario the market would be worth less than £1 billion per year.

Second, focusing always on “cost” as opposed to “opportunity” misses the critical point that new investment leads to new jobs and technological innovation. If the UK focuses on offshore wind or solar, for instance, it would need a plan for when the wind doesn’t blow or the sun doesn’t shine. This would mean a big boost for the “flexibility” market, which includes everything from batteries to services which encourage people to use energy at certain times. In a high-renewables future, it could be worth more than £1 billion per year. But if the UK instead goes for large carbon capture plants, the flexibility market will be worth almost nothing.

Finally, by demonstrating how different markets are created and destroyed in different energy futures, we can better understand the effects of energy policy on market creation. The UK is leading the world in the development of offshore wind power, as shown by a dramatic fall in the cost of government subsidies. Rather than focus on lowest total cost, this type of analysis shows how government can make policies which both achieve low-carbon ambitions and foster new export sectors. This requires innovation policy as well as subsidy support and new environmental regulation.

By calculating the “size of the prize” in clean energy futures our work shows that up to £21 billion of new value is available – but new value for whom? Clean energy policy cannot simply be about developing new technology. The value created by the UK’s offshore wind farms, nuclear power plants or carbon capture needs to flow towards its citizens, while export opportunities in offshore wind and storage technologies are maximised.


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