# System-Level Grid-Forming Validated in the Real World: Sungrow Sets a New Benchmark in Malaysia

- Link: https://www.thailand-business-news.com/pr-news/system-level-grid-forming-validated-in-the-real-world-sungrow-sets-a-new-benchmark-in-malaysia
- Published: 2026-07-10T17:44:00+07:00
- Author: PR Newswire

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KUALA LUMPUR, Malaysia, July 10, 2026 /PRNewswire/ — Sungrow, the globally leading
PV inverter and energy storage system provider, successfully completed full-condition
grid-forming (GFM) tests at the Santong 100 MW/400 MWh Battery Energy Storage System(
BESS) project in Malaysia, demonstrating how advanced grid-forming technology can
enhance grid resilience and support renewable energy integration in Southeast Asia.

 [ ⌊Santong 100 MW/400 MWh BESS⌉ ](https://mma.prnasia.com/media2/3005463/image1.html)

Santong 100 MW/400 MWh BESS

Unlike conventional grid-following systems that rely on external voltage and frequency
references, grid-forming technology enables energy storage systems to actively support
grid stability through functions such as black start, islanded operation, virtual
inertia, and voltage-frequency regulation.

At the Santong project, Sungrow completed four core dimensions of grid-forming (
GFM) capability, including plant-level black start, seamless on-grid/off-grid switching,
large-capacity transformer switching, and active grid support during grid-connected
operation. The project represents a landmark grid-forming energy storage applications
connected to Malaysia’s national grid, providing a practical reference for renewable-
heavy power systems across Southeast Asia.

**Four Core Capabilities of System-Level Grid-Forming**

Moving beyond traditional single-cabinet or limited-function tests, the project 
conducted full plant-level closed-loop validation across multiple operating conditions.
It verified the grid-forming system’s end-to-end capabilities, from active voltage
build-up to grid-connected support.

 ◦ _100 MW Plant-Level Black Start – Autonomous Grid Building_

Under a condition where the entire plant was completely de-energized with no external
voltage or frequency reference, Sungrow’s grid-forming PCS operated as an independent
voltage source, autonomously performing zero-voltage start-up and rapidly establishing
a stable AC bus voltage. Multiple converters simultaneously formed the grid and 
shared power equally, with no circulating current impact or device tripping throughout
the process. This validated capability provides a practical pathway for utilities
to strengthen grid recovery capabilities and improve resilience against large-scale
outages.

 ◦ _Millisecond-Level Seamless On-Grid/Off-Grid Switching _

The test verified seamless on/off-grid switching under two critical scenarios: instantaneous
disconnection following a grid fault and re-synchronization during grid restoration.
When the plant protection was triggered during full-load operation due to a grid
fault, the system transferred from grid-connected operation to off-grid grid-forming
operation without load interruption or significant voltage sag, maintaining continuous
power supply to local loads.

 ◦ _Frequent Large-Capacity Transformer Switching_

The system demonstrated robust transient withstand capability under frequent large-
capacity transformer switching, providing a practical reference for substation retrofits
and the integration of energy storage converters with ageing transformers in Southeast
Asia.

During the switching process, the bus voltage avoided severe collapse, and all equipment
remained stable and grid-connected, helping lower the technical barriers tooverseas
plant retrofitting and grid connection.

 ◦ _All-Condition Grid-Forming Support _

Under the weak grid conditions of Malaysia’s East Coast with low short-circuit capacity,
the system demonstrated its ability to provide virtual inertia, regulate voltage
and frequency, and mitigate renewable power fluctuations. The validation achieved
comprehensive coverage of key grid-forming functions and compliance with the latest
TNB grid connection requirements.

The Santong plant completed all tests in a single run, backed by Sungrow’s 20 years
of system-level grid-forming expertise.

Sungrow adopts full-plant coordinated system architecture. Deeply integrated wind,
solar and BESS control strategies eliminate logic conflicts arising from mixed-brand
equipment assembly. Tailored to Malaysia’s grid challenges, including high humidity,
fluctuating grid strength, and multi-PV coupling resonance, its full-band oscillation
suppression algorithm delivers superior power quality and system stability.

Photo Credit: Courtesy of Tenaga Nasional Berhad (TNB).

CONTACT:
WangLuly[luly.wang@sungrow-hq.com](https://www.thailand-business-news.com/pr-news/luly.wang@sungrow-hq.com)
15618330862

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**Read the original article :** [System-Level Grid-Forming Validated in the Real World: Sungrow Sets a New Benchmark in Malaysia ](http://www.prnasia.com/story/archive/5002004_AE02004_0?rand=184833)