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Flat Holm Microgrid Project

Technology Type Lead-acid Battery
Rated Power 5 kW
Duration at Rated Power (HH:MM) 0:15.00 / 5.00
URL More about Flat Holm Microgrid Project
Wind & Sun LTD installed the battery/inverter systems, wind turbine and PV arrays in the summer of 2006. The system uses 3 Sunny Island SI-4500 bi-directional inverters connected as a single phase parallel cluster as the heart of the system to combine to give a high quality sine wave inverter with powerful overload capability (total of 13.5kW 30min rating). They include powerful battery chargers that ensures maximum battery lifetimes, energy management controller for loads and generators, and a generator management system. All generation is connected on the AC side with the PV using Sunny Boy inverters and the wind turbine using a Windy Boy, so cable volt losses can be minimised. The Sunny Island cluster is connected to a battery bank rated at 60 VDC 916 Ah (@ C10 rate), comprising 15 x 4V Rolls Solar RB-4KS21PS batteries. This gives a storage capacity of over 27 kWh to 50% depth of discharge.
This data has been validated by project staff through a review of publicly available information about the project, and verified by the project owner. Information is accurate as of 2016-04-29.
Project Status
Status Operational
Commissioning On DD.06.YYYY
Project Includes Multiple Systems No

Flat Holm Island, Wales CF63 1AT
United Kingdom

Utility Type
Paired Grid Resource Primary Distribution
Paired Grid Resource Back up Diesel Generator, 6 kW wind turbine, 2 solar arrays with ~8 kW output
Project Includes Multiple Systems No
Ownership & Value Chain Partners
Ownership Model Customer-Owned
Equity Owner 1 UNK
Energy Storage Technology Provider Rolls Battery LTD
Power Electronics Provider SMA America
Integrator Company Wind & Sun LTD
Developer Wind & Sun LTD
Cost & Performance
Performance N/A
Service Use Case Electric Supply Capacity
Onsite Renewable Generation Shifting
Renewables Energy Time Shift
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