# Off-Grid / Weak-Grid Microgrid Solutions: Islands, Mines, Africa From Cambodia 1.5MW, Zambia 200kW/430kWh, 2.5MW mine to Maldives island grid-forming — off-grid/weak-grid microgrid lessons. Common thread: with no stable grid, a grid-forming PCS builds the reference Islands, mines and African villages share the question "who builds V/f reference" — answered by grid-forming PCS coordinating with diesel/PV. Four real projects **[Cambodia 1.5MW](/en/cases)**: 125kW PCS×12 + 120kW MPPT×6 + 600kW switch×3. Lesson: large projects group by cluster management first, then AC parallel & switch capacity. **[Zambia 200kW/430kWh](/en/cases)**: two standard PV-diesel all-in-ones parallel; EMS auto diesel; PCS self SOC balancing; half-wave loads handled by software. **[2.5MW mine](/en/cases)**: 125kW PCS×20, PCC controller + contactor for system-level coordination (beyond standard paralleling). **[Maldives island](/en/cases)**: 30kW PCS×18 (3/unit, 6 units); PCS sustains reference, no inter-unit comms, diesel flexible, any unit exit is non-disruptive. Solution capability = hardware + algorithm + commissioning VGRID spans [module PCS](/en/product/sp125hcps), [all-in-ones](/en/product/sp250hag2t-2) to [MW switch cabinet](/en/product/sp1350h54sw), with [undefined](/en/page/off-grid storage microgrid) and [undefined](/en/page/grid-forming/weak-grid microgrid) solutions. ## Must an off-grid microgrid have diesel? Not mandatory, but diesel is a reliable top-up in long cloudy/low-SOC periods; most island/mine projects include it with EMS auto-control. ## What is hard about multi-PCS paralleling? Cluster grouping, AC parallel and switch capacity; beyond standard counts use system-level PCC (2.5MW mine). ## How to handle half-wave loads? Software algorithms improve load capacity rather than just adding power (Zambia); needs vendor algorithm + commissioning. ## What matters most for islands? Stable grid-forming reference, modular redundancy and seamless multi-source coordination — any unit exit is non-disruptive (Maldives).