Phaluai Island has no grid connection — just diesel gensets and a solar plant. To give every household reliable power, PEA needed PV and battery storage to form a stable island grid on their own, with nothing upstream to lean on.
Microgrid
Phaluai Island Microgrid
Phaluai Island has no grid connection — just diesel gensets and a solar plant. To give every household reliable power, PEA needed PV and battery storage to form a stable island grid on their own, with nothing upstream to lean on.
Outcomes
At a glance
Provincial Electricity Authority (PEA)2024
1.25 MW
PCS rating
Grid-forming / islanding
Role
Mar 2024
COD
The challenge
What the client needed
Our solution
What we delivered
PEC provided the microgrid's core equipment: a 1.25 MW power conversion system (PCS) that forms and holds the island grid using a virtual synchronous generator and stabilization functions, with PV and the battery as the main supply and diesel as backup.
Why PEC
Why this project chose PEC
Running an island grid with no reference behind it takes grid-forming control and virtual inertia — the project needed more than supplying batteries. PEC and Italthai Engineering brought that power-electronics depth to the build.
Outcome
What happened in production
The microgrid supplies electricity to Phaluai under PEA's operation, moving the island toward round-the-clock power; it was commissioned in March 2024.