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Marine Energy for Aquaculture

  • Community-Scale Aquaculture
  • Powering Offshore Aquaculture
  • Powering Nearshore Aquaculture

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Community-Scale Aquaculture and Marine Energy in the Southern Salish Sea

In partnership with the Jamestown S’Klallam Tribe (JST), Pacific Northwest National Laboratory (PNNL) is investigating the ability of marine energy to support community-scale aquaculture. Tribal aquaculture represents an important component of community-scale aquaculture, which is typically defined as onshore and nearshore aquaculture operations in remote or coastal communities.

The Jamestown S’Klallam Tribe has a diverse aquaculture operation that includes the commercial growth and harvest of larval and adult shellfish and a research effort involving net pen sablefish. The current operations occur at several locations around the northeast Olympic Peninsula and the southern Salish Sea.

A Floating Upweller System where JST grows larval oysters. The oyster seed is sorted by size (right photo) and when large enough, it is sold to other commercial growers or used by JST. Photos by Hannah Hudson, PNNL.
(Right photo) A Floating Upweller System where JST grows larval oysters. (Left photo) The oyster seed is sorted by size and when large enough, it is sold to other commercial growers or used by JST. (Photos by Hannah Hudson | Pacific Northwest National Laboratory)

Project Goals

This project is focused on the southern Salish Sea, which includes the traditional waters of JST. We are exploring the feasibility for marine energy to power and contribute to sustainable practices for aquaculture though three lines of investigation:

  1. A spatial analysis that includes a marine energy resources assessment to understand the potential for wave and tidal energy throughout the region. This includes an analysis of parameters to identify suitable options for co-location of marine energy with JST’s current and future aquaculture operations.
  2. An energy assessment of current JST aquaculture facilities to understand how energy is used across the operation.
  3. Outreach and engagement about this project and the feasibility of co-locating marine energy and aquaculture more broadly.

Spatial analysis

The spatial analysis included two parts. First, the team conducted a resource assessment of marine energy, specifically wave and tidal energy, throughout the study area. Then, several parameters were used to identify locations that could be suitable for the co-location of marine energy and aquaculture. The parameters include existing uses of the marine environment, biophysical requirements for aquaculture, and critical habitat for threatened or endangered species.

Graphs showing wave height, tidal speed, and other features from the assessment of community-scale aquaculture near the Olympic Peninsula.
Maps of the study area showing part of the resource assessment for wave and tidal energy, and some of the parameters that are considered to identify suitable locations for co-location of marine energy and aquaculture. (Figures by Candace Briggs | Pacific Northwest National Laboratory).

Energy assessment

Shown here is the estimated proportion of energy consumption at the Point Whitney aquaculture facility for the different operations occurring on site. This information is helpful for facility managers to better understand energy consumption and facilitates the comparison of marine energy generation potential with specific components of the aquaculture operation. (Figure by Andrea Mengual and Hannah Hudson | PNNL).
Shown here is the estimated proportion of energy consumption at the Point Whitney aquaculture facility for the different operations occurring on site. This information is helpful for facility managers to better understand energy consumption and facilitates the comparison of marine energy generation potential with specific components of the aquaculture operation. (Figure by Andrea Mengual and Hannah Hudson | Pacific Northwest National Laboratory).

PNNL staff toured the JST aquaculture facilities and conducted a detailed assessment of their energy needs and uses. The outputs of the energy assessment include a breakdown of energy uses by facility, and the electricity needs for components of the operations. This will be compared against the modeled marine energy generation potential. The energy assessment also provides JST an opportunity to identify potential options for energy efficiency.

Outreach and engagement

The idea of co-locating marine energy and aquaculture is fairly new. That’s why a main objective of this project is to communicate with the aquaculture community about co-location possibilities and better understand their questions, concerns, and how they view the potential benefits of marine energy for their operations.

Throughout the project, there will be targeted community engagement activities to provide information on marine energy, aquaculture, and sustainable development via co-location. The team will also use the outreach and engagement efforts to understand perspectives and questions concerning marine energy and aquaculture and seek input from community members regarding what they see as opportunities for co-location.

Broader impacts

This work supports the development of the marine energy industry and demonstrates its value to remote and coastal communities by providing a better understanding of the applicability of marine energy for community-scale aquaculture. Results will further the understanding of the energy needs of community-scale aquaculture and the feasibility of marine energy technologies to support those operations.

Additionally, similar projects evaluating the potential for co-location of marine energy and aquaculture have been conducted in Puerto Rico and the United States Virgin Islands, Hawaii and California, and at kelp farms across the United States.

Resources

File

Webinar on Opportunities for the Co location of Marine Energy and Aquaculture, December 2024 - Slide Deck

News & Publications

JUNE 15, 2022
Article

Using Marine Energy to Power Offshore Aquaculture

Read
Aerial view of offshore aquaculture

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Research topics

Marine Energy

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