Engineer’s Tidal Generator Promises Fresh Power Source for Coastal Communities

Engineer David Mummery has introduced a tidal energy device that could supply a steady supply of electricity to towns situated along the shoreline, a development highlighted in a recent BBC Business report.

The prototype works by converting the regular rise and fall of ocean waters into electrical power through a series of submerged turbines. Unlike traditional hydroelectric schemes, the system requires no large dams or extensive shoreline alterations, allowing it to be installed in existing harbours or near‑shore sites with minimal visual impact.

Proponents argue that such technology could lower energy costs for residents who often pay premiums for electricity delivered over long, aging grid lines. By tapping a renewable resource that is both predictable and abundant, the generator may also create new jobs in manufacturing, installation, and maintenance, providing an economic boost to areas that have struggled with post‑industrial decline.

Coastal communities across the country face a unique set of challenges: exposure to sea‑level rise, higher-than‑average energy bills, and limited access to large‑scale renewable projects such as wind farms. While solar panels and on‑shore wind are increasingly common, their output fluctuates with weather conditions. Tidal power, by contrast, follows a twice‑daily rhythm dictated by the moon, offering a level of reliability that could complement existing green‑energy mixes.

Mummery’s team is now seeking partners for field trials, aiming to install pilot units at several ports that have expressed interest. Securing financing and navigating the regulatory framework for marine installations remain key hurdles, but early discussions with local councils suggest a willingness to explore the technology as part of broader climate‑resilience strategies.

If the trials prove successful, the project could influence national energy policy by demonstrating a scalable, low‑carbon alternative for remote or island locations. It aligns with the government’s net‑zero targets and could help diversify the country’s renewable portfolio, reducing dependence on imported fuels.

While the generator is still in the experimental stage, its development underscores a growing trend of engineers targeting niche renewable solutions that address both environmental and socioeconomic concerns. The coming months will reveal whether the tide truly turns in favour of this innovative approach to powering coastal towns.