Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of MRW, please enable cookies in your browser

We'll assume we have your consent to use cookies, so you won't need to log in each time you visit our site.
Learn more

Subsidies will ignite district heating

While the world continues to strive towards higher renewable energy usage and tries to leave fossil fuels behind, the fundamental challenge remains: renewable energy is simply more expensive than its fossil fuel counterpart.

Early adopters, or countries that are diligently implementing renewable mandates by developing renewable projects, bear the brunt of these costs, while the laggards of the renewables world continue to burn fossil fuels, keeping short-term costs down and getting a ‘free-ride’.

This plays out visibly in energy-intensive industries such as chemicals and my former employer the steel industry, where the price of the switch to renewable energy is simply not sustainable. When faced with competition from places with lower energy costs, such businesses cannot compete.

But renewables projects designed with the effective use of heat in mind, including energy from waste (EfW), can use resources efficiently and eventually bring down the cost of energy.

An area that presents a substantial opportunity and where there has been little progress is renewable heat. Many EfW facilities look with envy at the heat networks available to their Scandinavian peers.

Although a few cities in the UK have developed small heat networks – Sheffield, Leicester and Bristol being prominent examples – the country as a whole is well behind Denmark and even Russia. If we are serious about reaching the Government’s objective to see 20% of the country’s heat generated from renewable sources by 2030, we have got a lot of work to do: the UK is currently at 2%.

Renewable heat through combined heat and power involves a compromise, because taking high-quality heat from a power-generating process will inevitably reduce the amount of electricity produced. And to be physically transported, heat requires complex local networks, creating a credit risk among off-takers.

The extra risks for investors in distribution mean that heat must be worth more than electricity on a comparative basis in order for the trade-off to be worthwhile. Unfortunately, the existing Renewable Heat Incentive subsidy scheme is not aid enough. There are a number of barriers that stop renewable heat from becoming a viable option.

The basic question is “who will fund the first mile?” The initial stages of a heat network require a substantial amount of upfront capital investment that does not offer attractive returns to investors. After initial construction, the uptake from users is typically slow until the network reaches a critical mass, meaning that any early income would be reliant on a small number of users and their economic stability.

The credit risk involved with developing a network with unpredictable revenues requires someone to stand behind the purchase of heat so that generators can be guaranteed some payment until the network reaches an appropriate level of complexity.

Unfortunately, heat does not hold utility status in the same way that electricity and water do, meaning that bilateral wayleave negotiations – the right of way granted by landowners – are often the norm. This can cause holdups that lead to many opportunities to develop heat networks being lost.

There has also been little public education about the benefits of heat networks, leading naturally to some scepticism. Housing developers report that people will pay less for houses if they are built with a heat network installed. This misunderstanding of heat networks in the wider community makes heat networks hard to get off – or in – the ground.

The point I’m making is that the market cannot do on its own what it will take to graduate heat to an economically viable source of renewable energy. The returns are too fragile and investors will not shoulder this risk without some help, whether that be credit support, grants or guarantees.

There was good news in the recent Budget that £320m will be made available for renewable heat during the next five years. From what I’ve heard, the Government has not yet decided how to allocate this funding and I believe it is looking to the market for suggestions.

I would like to see the Government using the funds to solve structural problems in the market that the industry cannot solve itself, such as the early stages of networks and heat with utility status.

If investors know that they are guaranteed some income with a minimum offtake payment, the risk of pouring capital into the development of a heat network is dramatically reduced and the project becomes instantly more palatable.

Now that we have the promise of some sort of support, I hope that the EfW industry can play its part in making efficient use of the resources we manage, and contribute to the long overdue growth of renewable heat in the UK.

James Samworth is partner at the Foresight Group

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Links may be included in your comments but HTML is not permitted.