Tethys Stories

Tethys Stories feature information on news, events, research, and projects relevant to wind and marine renewable energy development activities across the globe. Stories are contributed from individuals working in the field, and provide insight into advancing the energy industry in an environmentally responsible manner. If you are interested in providing content to be featured as a Tethys Story, please email dorian.overhus@pnnl.gov.

  • Submitted by Tony Wright, general manager, Fundy Ocean Research Centre for Energy (FORCE) on
    Canada is witnessing a surge of interest in tidal stream technology development in the Bay of Fundy, but uncertainty around potential impacts on marine life has left the federal regulator, Fisheries and Oceans Canada (DFO), challenged to adequately assess the risk, particularly to fish. This uncertainty challenges the regulatory permitting process; without regulatory approval, developers cannot… Read More
  • Submitted by Luiz Faria (OERA Project Manager) on
    A major project risk in Canada for in-stream tidal energy project developers is the obligation to meet regulatory requirements related to Environmental Effects Monitoring (EEM). The federal regulator (Fisheries and Oceans Canada; DFO) requires each project proponent to demonstrate that their project will cause minimal harm to biological components of the marine ecosystem. Specifically, the… Read More
  • Submitted by on
    Author: Dorian Overhus (Pacific Northwest National Laboratory) Contributors: Andrew Monko and Don Lilly (Global Fiberglass Solutions) Decommissioned wind turbine blades in a Global Fiberglass Solution staging yard in Sweetwater, Texas, U.S. Although wind turbine blades represent a tiny portion of U.S. landfill waste and are among the least environmentally harmful materials entering landfills (… Read More
  • Submitted by on
    The 2020 State of the Science Report was released on 8 June 2020 by Ocean Energy Systems (OES)-Environmental, supported by the  International Energy Agency, and dedicated to examining the environmental effects of marine renewable energy (MRE) development. The 300-page report is the most comprehensive international analysis to date on the issue, based on studies and monitoring from publicly… Read More
  • Submitted by Xavier Guillou (General Directorate for Maritime Affairs and Fisheries, European Commission - DG-MARE), Juan Bald (WESE), Erica Mathers (SEA Wave), Caitlin Long (SEA Wave), and Dorian Overhus (Pacific Northwest National Laboratory) on
    The emerging marine renewable energy (MRE) industry faces many challenges including uncertainty around potential environmental pressures and impacts. This industry is also known as ocean energy, with most early developments being wave and tidal energy generation. MRE stands as one of the main pillars of the European Union (EU) Blue Growth strategy which notes the need for studies, research, and… Read More
  • Submitted by Dr. Tom Denniss (Wave Swell) and Dorian Overhus (Pacific Northwest National Laboratory) on
    Global renewable energy usage is on a steep upward trajectory, much of which is being driven by wind and solar. However, because of the variability of these sources, renewables are best implemented across as a diverse combination of resources and geography as possible. Therefore, utilizing a new renewable resource that is completely uncorrelated with wind and solar is clearly of benefit. Wave… Read More
  • Submitted by Melissa Oldreive, Dom Tollit, and Daniel J. Hasselman (FORCE) on
    The Fundy Ocean Research Center for Energy (FORCE) is Canada’s leading center for research and demonstration of in-stream tidal energy technologies. Located in the Bay of Fundy in the Atlantic province of Nova Scotia, FORCE has been collecting environmental and site characterization data for almost ten years. Based on this experience, FORCE has a role to play in supporting informed, evidence-… Read More
  • Submitted by Marisa McNatt and Matthew Sanders (POET) on
    A small nonprofit based in Portland, Ore. is helping to place the Pacific Region of the United States – comprised of California, Oregon, Washington, Alaska, and Hawaii – on the map as a vibrant destination for ocean renewable energy research and development. Available offshore wind, wave, and tidal resources offer significant opportunity for states in the Pacific Region to meet their renewable… Read More
  • Submitted by Janine Aschwanden, Stefan Werner, Felix Liechti on
    The number of fatal bird collisions at wind turbines is rarely studied in relation to the number of birds observed crossing an area. The reason might be that the acquisition of such data is time consuming, costly, and not trivial. The analysis and interpretation of radar data is especially difficult. Furthermore, there are a variety of radar systems and not all systems are technically suitable to… Read More
  • Submitted by Jim Strittholt on
    Jim Strittholt, Conservation Biology Institute (US) In order to effectively combat climate change, rapid transition to renewable energy is essential and new economic opportunities are rapidly emerging. The recent progress towards renewable energy is encouraging, but care must be taken to avoid unintended negative consequences on wildlife and existing human uses whether these new developments are… Read More