Home / Case Studies / Saft Li-ion energy storage enables SEV to optimize wind power for the Faroe Islands
SEV, the Faroe Islands utility, has commissioned Europe’s first fully commercial Li-ion energy storage system (ESS) operating in combination with a wind farm. Saft’s containerized solution is helping to maintain grid stability so that the islanders can capture the full potential of their new 12 MW Húsahagi wind farm.
SEV has a green vision for 100 percent renewable electricity production by 2030 by making full use of the Faroe Islands’ abundant wind and hydro energy resources, together with emerging technologies like photovoltaics and tidal energy. By 2030, SEV will double its current 314 GWh annual demand for electricity.
The latest step in SEV’s renewable energy program is a new 12 MW wind farm located in Húsahagi, on the island Streymoy. Since coming on line in 2014, the wind farm has increased the islands’ wind share to 26 percent of total electricity production.
To overcome short-term variations linked to the variable nature of wind, lasting from seconds to minutes, a 2.3 MW Li-ion ESS has been deployed. It provides ramp control to smooth out sharp increases and decreases in power, as well as frequency response and voltage control services. The use of energy storage also helps to minimize the risk of curtailment during periods of high wind and low consumption. Excess wind energy that cannot be injected into the grid is now be stored in the batteries.
The 2.3 MW ESS at the Húsahagi wind farm comprises two Saft Intensium® Max High Power containerized Li-ion batteries. They were delivered in standardized 20-foot containers for ease of transportation and installation and they integrate the communications interface, battery management and cooling and fire prevention equipment.
The batteries are combined with ENERCON’s power conversion and control equipment. The complete installation – wind turbines and ESS–is designed to limit short term power variations in order to maintain grid stability.
Historically, the islands have experienced a higher number of blackouts compared with mainland Europe – between one to three per year. Power network stability has become further challenged with the significant increase in the penetration of wind power.
The Húsahagi ESS was commissioned in December 2015. With SEV’s operational expertise in renewable energy allied to Saft’s leading-edge energy storage technology it is already making a significant contribution to enhancing grid stability.
Saft and ENERCON were our partners for the Li-ion battery and energy conversion systems. They were a natural choice due to their combination of fully commercialized technology and the capability to support us from initial concept and solution modelling through to final delivery. So far the ESS is functioning exactly as planned and the benefits of energy storage are clear.Terji Nielsen, SEV R&D Manager
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