Cost of Energy Review
25th October 2017
This review has two main findings. The first is that the cost of energy is significantly higher than it needs to be to meet the government’s objectives and, in particular, to be consistent with the Climate Change Act (CCA) and to ensure security of supply. The second is that energy policy, regulation and market design are not fit for the purposes of the emerging low-carbon energy market, as it undergoes profound technical change.
2022 Select Committee appearance (Economic Affairs Committee)
8th March 2022
Subject: UK energy supply and investment
https://www.parliamentlive.tv/Event/Index/f47295d6-4bcc-4327-a480-a0f1385a5c4f
2021 Select Committee appearance (Industry and Regulators Committee)
20th July 2021
Subject: Ofgem and net zero
https://www.parliamentlive.tv/Event/Index/5953556f-30f4-4710-9300-b27823818a89
Economy, Tourism and Energy Committee, Scotland
1st September 2026
Economy, Tourism and Energy Committee | Scottish Parliament TV
Environment, Food and Rural Affairs Committee’s inquiry into Reforming the water sector – written evidence
8th September 2026
In written evidence to the Environment, Food and Rural Affairs Committee, Dieter argues that Thames Water should already be in Special Administration. He says regulators have weakened the rules by allowing expensive rescue loans and avoiding the regime designed for failing utilities. If Thames Water escapes the consequences, other water companies might expect the same treatment, undermining regulation, weakening environmental enforcement, and increasing the risk that customers ultimately pay the cost.

