I strongly suggest you listen to the recent CARILEC Renewable Energy Community (CAREC) seminar about Energy Storage solution to combat large cyclic loads that Grand Bahamas Power Company (GBPC) faces. This is the first energy storage application in the Caribbean, where the main purpose is not to support renewable energy generation, but to help the utility company optimize spinning reserves responding to large industrial energy swings. Neilsen Beneby of Emera Caribbean Inc. did a fantastic job clearly describing the challenge and the solution GPBC selected. Martyn Ford of CAREC expertly curated and moderated the session, leading with a poignant introduction and handling a variety of representative questions at the end.

The Bahamas’ official target is to have 30% of renewable energy generation by 2030, and privately-owned GBPC is fully committed to support this goal. Emera Caribbean owns and operates GPBC since 2011, and since thenwas able to stabilize both power delivery and electricity rates.

Grand Bahama’s average load is only 40-45MW, and GPBC has two industrial customers – 10 port cranes with regenerative drives and a dragline excavator – with swings of greater than 8MW within a fraction of a second, and 5.5MW swings almost instantaneously. That necessitates GPBC to keep 15MW of spinning reserves when industrial customers are online, while they need only 8MW of spinning reserves with the industrial customers offline. Rapid load swings also cause measurable frequency variation from 59.5Hz to 61Hz.

To address this load variation, GBPC is implementing a storage solution from ABBusing a Samsung 9.6MW system with 2C rating. The design boasts 5.6MWh usable capacity, and design cap of 7.3MW. Expected asset life – 10 to 15 years. This system will absorb power swings, and will make an 8MW swing appear as 1.3MW swing to the rest of the system – the impact of which can be easily absorbed. This cool project is scheduled to be commissioned this summer – keep your eyes peeled for press releases. I know I will.

The presentation generation more questions that could be possibly answered during the webinar, and Neilsen went above and beyond andgraciously offered to answer each one of them via the CAREC platform or via email.

Join CAREC for access to this amazing session and so much more at community.carilec.org.