Cohort 1: Alaska Longline Fishermen’s Association

The Alaska Longline Fishermen’s Association (ALFA) developed a model to estimate energy savings for a converted hybrid electric propulsion fishing vessel with technical assistance from the Energy Transitions Initiative Partnership Project.

Project Summary

Fishermen in Alaska depend on diesel fuel to power their vessels, and diesel is one of the largest operating costs for fishers. Burning diesel also contributes to climate change, which reduces fish catch rates and puts the sustainability of the fishing industry at risk. For these reasons, the Alaska Longline Fishermen’s Association applied to the first Energy Transitions Initiative Partnership Project cohort for assistance to understand how to reduce carbon emissions from fishing vessels via hybridization (both diesel and electric) and potentially full electrification.

Sandia National Laboratories (Sandia) and the National Renewable Energy Laboratory (NREL) worked with ALFA to assess the feasibility of electrifying fishing vessels. NREL created a modeling framework to estimate energy savings for one fishing vessel (the I Gotta) that will be converted to hybrid electric power, considering two levels of hybridization. The model used Markov Chain and random walk modeling to simulate longer voyages and other duty cycles to expand the simulation results beyond one boat’s usage profile. Sandia conducted an alternative fuels review to provide information about additional options for electrifying or refueling the ALFA fleet without any diesel use.

Project Outcomes

A draft report concluded that the I Gotta could reduce diesel consumption by 60% on its typical 1-day voyage with a hybrid engine. Other vessels on a 3-day voyage could save 25%–61%, depending on the hybrid engine diesel/electricity ratio. Longer and more transit-intense voyages could expect 15%–25% fuel savings.

Key Takeaways

The space in fishing vessels is limited, which makes alternative fuel retrofits difficult. Timing the project to avoid disruptions to the fishing season is another challenge.

Opportunities and Impacts

ALFA received funding to hybridize the I Gotta via the U.S. Department of Energy’s Fiscal Year 2022 Vehicle Technologies Office Funding Opportunity Announcement to advance clean energy projects in the transportation sector.

Additional Information

Alaska Longline Fishermen's Association Receives Seafood Industry Climate Award, ALFA Press Release (2022)

Alaska Longline Fishermen's Association Receives Seafood Industry Climate Award, Alaska Sporting Journal (2022)

Alaska's Sustainable Fishing Legacy, Consensus Digital Media Video (2023)

Battery-Electric Fishing Vessel Marks a Sea Change for Small Commercial Fishers, NREL News (2023)

University of Alaska, National Labs Help Alaskans Address Energy Needs, University of Alaska Fairbanks News Story (2021)