Energy – Peter Kydd

Published on April 18, 2013 in 2013 Conference Reports, Audio, Energy, Presentation

Peter KyddPeter Kydd, Director of Strategic Consulting at Parsons Brinckerhoff discussed the issue of Energy.

In his presentation, Peter looked at a growth roadmap for UK, with renewable energy and discussed the Bristol Channel Energy – A Balanced Technology Approach, a discussion document published by Regen South West, November 2012.

Peter then discussed an incremental approach with Stepping Stones, a tidal lagoon designed to reduce cost and impact.

Stepping Stones – a tidal lagoon designed to reduce cost and impact

Key points


  • To demonstrate that tidal power can be generated from the Severn Estuary with acceptable cost, environmental and social impacts and build UK confidence in ocean energy
  • To be informed by the Severn Tidal Power Feasibility Study research and add to that research base through full scale demonstration
  • To be financeable in the private sector but developed in partnership with the public sector


  • Should not compromise future development of the short listed options in the Severn Tidal Power Feasibility Study
  • Should not impact Severnside Ports
  • Should not involve significant habitat and ecological loss
  • Should be competitive with offshore wind in the long term

Environmental considerations are important –

Key points

  • Ebb and flood operation  and lagoon site – loss of habitats minimised;
  • Avoids rivers that are important for migratory fish;
  • Avoids direct loss of internationally designated habitats although there is some impact on East Aberthaw SSSI;
  • The scheme does not enclose the mouth of the estuary and hence impacts on ports, navigation and the famous tidal ‘bore’ are small;
  • The size of the lagoon means that material ‘far-field’ effects on water levels are unlikely;
  • The risk of water quality effects within the lagoon, already identified as small in STP studies, will be reduced further because the lagoon does not enclose any major outfalls or rivers;
  • Aberthaw PS outfall adjacent to the lagoon will require detailed study
  • Sea bed conditions known so uncertainty issues of deep silt/mud are much lower project risk

Potential Regional Economics Benefits

Key points

  • Severnside Ports and other commercial sea-bed users are not expected to be adversely impacted;
  • Existing technology = low risk and ready to go…
  • 4,000 jobs created (of which 2,000 would be local construction jobs) over the 4 year construction period with a further 1,800 of associated indirect jobs in the local community
  • 80 permanent jobs would be created to operate the new power station
  • As the largest tidal power plant in the world, tourism and educational opportunities would be created
  • Over 1 million tonnes of carbon dioxide emissions would be saved annually
  • Potential to replicate in other locations
  • Positions UK as global hub for ocean energy and green investment
  • Able to contribute off peak energy in alignment with smart grid for distribute storage/electric vehicle charging et al, as that market develops

Listen to the full talk below: