As the demand for energy escalates and costs spike across North America, the Great Lakes region is poised to become a pivotal player in the clean energy sector. The introduction of advanced submersible hydroelectric technologies could significantly bolster the region’s energy capacity, particularly in urban centres like Montreal, Toronto, and Chicago, which are grappling with increasing electricity needs.
Next-Generation Hydropower in the Great Lakes
The Great Lakes, renowned for their vast freshwater reserves, present a unique opportunity for renewable energy generation. Although the lakes themselves lack the tidal flows typical of coastal regions, the interconnected waterways, such as the St Lawrence River, can harness substantial hydropower potential. The Ocean Renewable Power Company (ORPC) is at the forefront of this initiative, having announced plans to deploy its innovative hydroelectric devices in Montreal later this year.
Stuart Davies, CEO of ORPC, emphasises the St Lawrence River’s suitability for this technology, noting its consistent and powerful water flow. He estimates that the Montreal area alone could support between 60 and 90 megawatts of hydroelectric capacity, a significant contribution to the regional energy grid. ORPC’s devices utilise carbon fibre turbines, designed to capture energy efficiently from moving water, akin to the blades of a traditional push lawnmower.
A Growing Demand for Renewable Solutions
The momentum for marine energy generation comes at a crucial time. Rising electricity costs have affected millions across the Great Lakes, with significant rate hikes approved in areas like western New York. This trend is mirrored in states such as Michigan and Ohio, where the interplay of local energy policies and the growth of data centres is creating further strain on the electricity supply.
Despite the relatively modest output of ORPC’s devices—ranging from half a megawatt to five megawatts—Davies asserts their relevance for industrial applications, especially as businesses increasingly seek reliable power sources to support growing demands such as artificial intelligence. He points out that these hydroelectric solutions could serve as a continuous power supply, even during grid outages.
Environmental Considerations and Technological Challenges
While the potential benefits of submersible hydroelectric technology are promising, they are not without controversy. Regulatory hurdles in the United States pose a significant barrier, with the average licensing process for hydroelectric facilities taking up to eight years. The ecological impact of these devices is also a concern for environmental advocates, who stress the need for responsible deployment.
Anne KC McCooey from the Black Rock Riverside Alliance highlights the importance of environmental stewardship, advocating for energy solutions that balance innovation with ecological integrity. ORPC has reported no fish injuries from its turbines in Alaska, where they have operated since 2019, yet the debate over environmental impact continues.
Innovations are being developed to address these concerns. For instance, Michael Bernitsas, a professor at the University of Michigan, is testing a new technology called Vivace, which can generate power from slower-moving water currents. This adaptability could open new avenues for energy generation in regions where traditional turbines may not be viable.
The Future of Hydropower in North America
The advantages of operating in the Great Lakes, particularly the absence of saltwater corrosion, offer a distinct cost benefit for hydroelectric projects. With the growing interest in marine energy, ORPC is exploring further opportunities, including potential projects on the lower Mississippi River slated for next year.
As the landscape for renewable energy continues to evolve, the recent elimination of federal subsidies for wind and solar under the Trump administration has shifted the competitive dynamics in favour of marine energy solutions. With tax incentives remaining in place for marine technologies until at least 2033, interest in ORPC’s innovations has surged, with inquiries from over 70 countries.
Why it Matters
The integration of submersible hydroelectric technology into the Great Lakes region could redefine the energy landscape, providing a sustainable alternative to traditional power sources amid rising costs. As cities confront escalating electricity demands, this innovative approach not only promises to enhance energy security but also fosters a commitment to environmental responsibility. The success of these initiatives could serve as a model for future renewable projects, illustrating the potential of harnessing natural resources while preserving ecological integrity.
