Island Microgrid Solutions
Summary: Build 24-hour stable green power supply with solar, storage, and diesel, replacing high-cost diesel generator sets, covering remote islands in Southeast Asia and Africa.
Solution Overview
For remote islands in Southeast Asia, Africa, and the Pacific, a PV-storage-diesel microgrid is built with solar, diesel/gas power generation, and energy storage to replace high-cost, high-emission diesel generators and provide 24-hour stable green power.
Key Points
- Diesel replacement rate can reach 60–80%, significantly reducing fuel and O&M costs
- Static transfer switch (STS) enables <10ms millisecond-level grid-connected/off-grid switching
- Integrated core equipment: PCS / STS / BESS / EMS / MPS
- Provides 24/7 stable green off-grid power supply, supporting black start and frequency regulation
Application Scenarios and Challenges
Island grids are isolated, fuel transportation costs are high, diesel generator O&M is difficult, and emissions are significant; load fluctuations are obvious during peak tourism seasons, and power supply reliability requirements are high.
VGRID System Composition
- Power Conversion System (PCS): As the core of AC/DC coupling, it enables PV MPPT, battery charging and discharging, and seamless parallel operation with diesel generators.
- Static Transfer Switch (STS): Provides millisecond-level switching between the utility/diesel generator and the microgrid, ensuring uninterrupted power for critical loads such as hotels, communications, and medical facilities.
- Battery Energy Storage System (BESS): Smooths PV fluctuations, performs peak shaving and valley filling, and provides off-grid black start and frequency regulation support.
- Energy Management System (EMS): Dispatches solar/diesel/storage based on load and irradiance forecasts to maximize the green power ratio and minimize fuel consumption.
- Microgrid AC Panel (MPS): Integrates combiner, protection, and AC distribution, simplifying assembly and O&M on island sites.
Core Value
- Diesel replacement rate can reach 60–80%, significantly reducing fuel and O&M costs
- Increased green power ratio, meeting the requirements of island eco-tourism and carbon emission reduction
- Seamless switching ensures critical loads such as tourism, communications, and medical facilities
- Modular deployment enables smooth capacity expansion according to island needs
Typical Applications
Already applied on multiple remote islands in Southeast Asia and Africa, covering power supply for villages and towns, resorts, and communication base stations.
Delivery and Support
VGRID POWER (VGRID) provides integrated delivery from site assessment, system design, and core equipment manufacturing (PCS/STS/BESS/MPS) to commissioning and remote O&M. Welcome to contact us for customized solutions and quotations.
FAQ
Can an island microgrid completely eliminate diesel generators?
On high-sunshine islands with sufficient solar and storage configuration, diesel usage can be significantly reduced, but most projects retain diesel/gas as backup for extreme weather, with a typical diesel substitution rate of 60–80%.
How is power supply for critical loads ensured in off-grid situations?
Millisecond-level grid-connected/off-grid switching is achieved through a static transfer switch (STS), with black start and frequency regulation support provided by the BESS.
What capacity do VGRID POWER's island microgrids typically have?
Modular configurations range from a few hundred kW for villages/base stations to several MW for resort islands, determined by load and resource assessment.
How long does island project deployment typically take?
Standard modular solutions can be assembled quickly on site, typically commissioned within weeks to months, with remote EMS reducing the need for long-term on-site O&M.
