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Kema Microgrid

Current status, energy mix, organizations, suppliers, equipment, controls, reported specifications, and project updates—with source-level citations.

CoverageDetailed public record
Named organizations5
System facts18
Sources reviewed5
Evidence reviewed2026-07-20

The recovered 'KEMA' project is Leonics' abbreviated label for the RPS Kemar solar-diesel-battery mini-grid in Gerik, Perak, Malaysia—not Kemayan, Pahang. Supplier and TNB presentations document an 850 kWp PV array split between 600 kWp DC-coupled and 250 kWp AC-coupled sections, 850 kW of inverter capacity, 4.8 MWh of 480 VDC battery storage, and four diesel generators totaling 1.6 MW. The project's published 3.30 MW label is Leonics' sum of PV, inverter, and diesel ratings, not a conventional net generation-capacity figure.

Research status
Commissioned in November 2012 for 24-hour rural electrification. A 2018 TNB Energy Services company profile still listed TNBES as EPC and O&M contractor for 342 consumers, but no later project-specific operating report was located. The plant should be described as commissioned/historically operating, with present battery condition, diesel consumption, renewable share, and service availability unverified.
Historical classification
Community
Reported capacity
3,300 kW
Coordinates
3.13599, 102.37019
Evidence note: “Every company” cannot be proven from public material alone. This page lists every organization found in the recovered record and reviewed sources, preserves unknown roles, and explicitly marks undisclosed controller or equipment details.
Report missing evidenceResearch methodology

Project delivery

Who was involved in Kema Microgrid?

5 publicly identified organizations. Where a recovered source named a participant without explaining its work, the role remains explicitly unspecified.

Organization

Leonics

Publicly named participant; role not specified in the recovered record [1]

Organization

Leonics Co., Ltd.

Hybrid power-conversion, charge-control, system-control, and monitoring equipment supplier/integrator. [2][3]

Organization

Ministry of Rural and Regional Development Malaysia

Project owner under the Bekalan Elektrik Luar Bandar rural-electrification program. [4]

Organization

RPS Kemar Orang Asli communities

End users across remote settlements, including homes, school, clinic, mosque, and government facilities. [4][5]

Organization

TNB Energy Services Sdn. Bhd. (TNBES)

Turnkey/EPC contractor and later listed operation-and-maintenance provider. [4][5]

System evidence

Energy mix, capacity, and specifications

Values can describe different project phases, generation sources, storage systems, or other components. Source citations are attached to each figure so discrepancies remain visible.

KW Solar
850 [1]
KW Gas/Diesel
1600 [1]
Storage
4800 kWh [1]
Solar PV
850 kWp total: 600 kWp DC-coupled and 250 kWp AC-coupled [2][4]
Battery storage
4,800 kWh nominal at 480 VDC; chemistry and usable energy are not disclosed [2][3]
Diesel generation
1,600 kW total: two 450 kW and two 350 kW generator sets [2][4]
Inverter and charge-control capacity
Three 200 kW bidirectional battery inverters (600 kW), one 250 kW grid-connected inverter, and nine 70 kW MPPT charge controllers (630 kW controller aggregate) [2]
Published system label
3.30 MW, defined by Leonics as total power of inverter + diesel generator + PV (850 + 1,600 + 850 kW). It is not an additive generation nameplate because inverter capacity is counted alongside the resources it converts. [2][3]
Beneficiaries
TNB's 2015 presentation says approximately 5,000 residents; TNBES' 2018 profile says 342 consumers including houses, mosque, government office, clinic, and schools. These are different population/customer metrics. [4][5]
Schedule
Contractor start October 2010; commissioning/completion November 2012 [4][2]

Controls and hardware

Equipment and controller details

Manufacturer and model are shown only when a source names them. Generic descriptions are not converted into guessed product assignments.

01

Bidirectional battery inverters

Leonics

Three 200 kW units provide 600 kW of grid-forming/bidirectional conversion. The reviewed project diagram does not give the commercial model. [2]

02

PV inverter and charge controllers

Leonics

A 250 kW grid-connected inverter serves the AC-coupled PV section; nine 70 kW MPPT charge controllers serve the 600 kWp DC-coupled section. [2]

03

Hybrid supervisory controls

Leonics

The supplier architecture uses a System Monitoring Unit, Inverter System Controller, and Hybrid System Control and Command Unit for coordinated PV, battery, and diesel dispatch and remote monitoring. [3]

04

Battery and diesel equipment

Model not publicly disclosed

Aggregate ratings and diesel-unit sizes are public, but battery manufacturer/chemistry and genset manufacturers/models are not identified in the reviewed authoritative material. [2][4]

Technical record

Architecture, performance, and project updates

Concise technical facts, milestones, operating results, and later developments. Dated notes distinguish historical design claims from current evidence.

  • Hybrid architecture

    Daytime loads can be served by 250 kWp of AC-coupled PV while the 600 kWp DC-coupled array charges the 480 V battery through MPPT controllers. Battery inverters and diesel sets support the common isolated AC mini-grid and provide overnight/low-solar supply. [2][3]

  • Identity and map correction

    Leonics alternates between 'Kema' in overview graphics and 'Kemar Village, Perak' in the detailed diagram. TNB names the site RPS Kemar, Grik/Gerik, Perak. The recovered coordinates near Kemayan, Pahang are therefore a geocoding error and should not be used for this asset. [2][4]

  • Service design

    The system was intended to provide expandable 24-hour electricity with remote monitoring to settlements and public facilities that lacked normal grid service. [4]

  • Evidence gap

    No project-specific public source reviewed after the 2018 O&M listing reports energy production, PV share, diesel savings, outages, battery replacements, or whether the original 4.8 MWh bank remains in service. [5]

Provenance

5 sources

Primary owner, government, university, supplier, and engineering sources are preferred. Archived references preserve claims whose original pages moved or disappeared.

  1. [1]
    Recovered Microgrid Projects record

    Internet Archive · Archived source · captured 2021-04-20

  2. [2]
    MW scale Stand-Alone Hybrid Mini-Grid System

    Leonics / HOMER Energy · Primary source

  3. [3]
    Inverter Technologies in Isolated Microgrid

    Leonics / Asia Clean Energy Forum · Primary source

  4. [4]
  5. [5]
    TNB Energy Services Company Profile 2018

    TNB Energy Services (archived copy) · Archived source

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