Engineer David Mummery has created a tidal energy generator that he believes could deliver practical benefits to people living in coastal communities. He says the device is designed to capture the energy in tidal currents and convert it into electricity that can be used locally, potentially reducing dependence on distant power infrastructure.
Why tidal power appeals to coastal towns
Tidal energy is attractive because tides are regular and predictable, unlike some other renewable sources. That predictability can help communities plan for supply and integrate generation with local demand. Proponents argue that harnessing energy close to where it is needed could improve resilience, provide a degree of energy independence and support local economies.
Potential community benefits and limits
Supporters of small-scale maritime generation say systems such as the one Mr Mummery has developed could lower transmission losses and create local jobs in manufacturing, installation and maintenance if they reach commercial scale. However, claims about social and economic transformation remain contingent on successful testing, cost-competitiveness and sustainable business models.
Technical, environmental and regulatory hurdles
Tidal devices face a range of challenges, including harsh marine conditions, long-term reliability, maintenance access and the need to avoid harming marine ecosystems. There are also significant upfront costs and consenting processes that can slow deployment. Any new technology must demonstrate it can operate reliably, safely and affordably before it can be rolled out beyond demonstrations.
Next steps and wider context
For Mr Mummery's generator to move from concept to community asset will likely require pilot projects, independent testing and regulatory approvals, as well as investment to scale production. Tidal power is one part of a wider low-carbon energy mix — it could complement wind and solar in coastal regions if technical and economic barriers can be overcome.