ORCID

Abstract

Vessel-to-Grid (V2G) technology offerssignificant potential for supporting grid stability, boostingrenewable energy integration, and increasing the profitabilityof electric vessels (EVs) through intelligent energymanagement. However, concerns linger regarding the impactof frequent charge-discharge cycles on battery health,especially with the further inclusion of the V2G power cycles.The impact of this approach has been well-studied for roadbasedelectric vehicles, where the concluded outcomes areparticularly customised based on the road vehicle operationalduty cycles. However, this approach remains largelyunexplored for marine EV batteries, due to their unique dutycycles and implementation of second-hand battery systemsfor use in V2G technologies. This paper addresses that gapby investigating the impact of V2G on commercial lithiumionbattery packs (6.8 kWh, 44V, 12 cells) used in smallpowerleisure and light-duty marine vessels. A dedicatedtestbed was developed, incorporating a bidirectional DCpower supply and integrated battery management system.Simulated operational cycles were applied to assess V2G usecases such as peak shaving, renewable energy integration,and energy trading. Accelerated cycling tests replicated realworldV2G patterns over several weeks, allowing forcontinuous monitoring of the battery state of health (SOH).Results show that while V2G is technically viable andeconomically beneficial for marine EVs, its effects on batterySOH, especially for second-life batteries, must be carefullymanaged to ensure long-term sustainability.

Publication Date

2025-09-05

Publication Title

Proceedings of UPEC 60th International Universities Power Engineering Conference

ISBN

979-8-3315-6520-6/25/

Deposit Date

2025-12-12

Download

Share

COinS