$OPTT The hybrid PowerBuoy® stores power for surface and subsea payloads in onboard lithium iron phosphate batteries, primarily charged via solar panel array. An efficient, clean burning and silent nominal 1kW Stirling engine provides backup power, fueled by liquid propane. This combination makes the hybrid PowerBuoy® a low- to zero-carbon power solution. $FCEL $POLA $TSLA
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