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Aurora Summer Renewables Summit 2018

Renewables has dominated power sector investment in the UK and Europe over the past decade and will continue to do so in years to come. The nature of investment is changing rapidly, however, as subsidies wane, merchant risks increase, and much remains uncertain about policy and market outlook.

Speakers include: Lord Deben (Committee on Climate Change) Ashley Ibbett (BEIS), Hugh Brennan (Hive Energy), Emma Tinker (Asper Investment Management), Joris Rademakers (Forsa Energy), Juan Rivier Abbad (Iberdrola Renovables), Minal Patel (Foresight Group), Richard Howard (Aurora).

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Renewables have become very cheap – depending on how you do the calculations, cheaper than new build CCGTs.  Therefore, they should be able to be deployed ‘subsidy-free’. Indeed, we have seen a few, relatively small projects, which have taken the wholesale market price risk and been deployed without subsidy in the UK. But the more renewables we deploy, the more those renewables ‘cannibalise’ their own capture prices.

In economic models, where we often assume rational actors with perfect foresight, renewables should build only to the extent that price cannibalisation prevents the additional marginal unit of new build renewables from meeting their required rates of return and all the existing assets proceed to make a sensible return for their investors. In the real world, there are two very sub-optimal, potential alternative scenarios.

  • The first scenario is that renewable investors think price cannibalisation is too much of a threat, and the nascent subsidy-free renewable model never really gets going.
  • The second (but less likely) scenario is that renewables do take off subsidy-free, but that we overbuild and renewables investors get burnt when the capture prices for their assets fall and they do not make sufficient returns.
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