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Practical insights on energy, building automation, and compliance for buildings and industry, by the Cobler team.

AFA TNB: Kenapa Bil Elektrik Naik Turun Setiap Bulan - illustrationTNB Bills & Tariffs

AFA TNB: Kenapa Bil Elektrik Naik Turun Setiap Bulan

AFA menggantikan ICPT di bawah RP4 dan ia berubah setiap bulan, kadang jadi surcaj, kadang jadi rebat. Panduan ini tunjuk cara mengasingkan kesan AFA daripada kesan operasi anda sendiri.

Aug 26, 2026Read
Surcaj Faktor Kuasa TNB: Punca dan Cara Elak - illustrationTNB Bills & Tariffs

Surcaj Faktor Kuasa TNB: Punca dan Cara Elak

Faktor kuasa di bawah 0.85 boleh menambah satu baris surcaj pada bil TNB anda setiap bulan, dikira atas jumlah caj dan bukan atas beberapa kW kecil. Ini punca sebenarnya, cara ia muncul dalam bil, dan cara membetulkannya.

Aug 26, 2026Read
9 Punca Bil Elektrik Tinggi di Premis Komersial - illustrationTNB Bills & Tariffs

9 Punca Bil Elektrik Tinggi di Premis Komersial

Satu selang 30 minit boleh menentukan caj permintaan sebulan penuh di bawah tarif RP4. Ini sembilan punca sebenar bil elektrik tinggi di premis komersial dan kilang, serta cara mengesan setiap satu daripada bil anda sendiri.

Aug 26, 2026Read
Cara Baca Bil TNB: Panduan Baris Demi Baris RP4 - illustrationTNB Bills & Tariffs

Cara Baca Bil TNB: Panduan Baris Demi Baris RP4

Panduan baris demi baris bil elektrik komersial dan industri TNB di bawah tarif RP4: lima komponen caj, di mana mencari bacaan MD dan faktor kuasa. Termasuk tanda-tanda bil yang patut anda siasat.

Aug 26, 2026Read
Genset Peak Shaving in Malaysia: Does It Pay? - illustrationTNB Bills & Tariffs

Genset Peak Shaving in Malaysia: Does It Pay?

Under TNB's RP4 tariff, every kW kept off your monthly peak interval is worth RM89.27 to RM97.06. Whether a standby genset can beat that depends on one number: how many hours a month it has to run.

Aug 26, 2026Read
Why Is Your TNB Bill So High? A Commercial Checklist - illustrationTNB Bills & Tariffs

Why Is Your TNB Bill So High? A Commercial Checklist

A Medium Voltage site peaking at 1,000 kW pays around RM89,270 a month in demand charges before any energy is billed. Nine common causes of a jumped commercial TNB bill, each with what to check on the bill and what to check in the building.

Aug 26, 2026Read
What Is Load Factor? The KPI Behind High TNB Bills - illustrationTNB Bills & Tariffs

What Is Load Factor? The KPI Behind High TNB Bills

Load factor tells you whether you are paying TNB for capacity you actually use or capacity you touch once a month. Here is the formula, a worked RP4 example where two identical-kWh sites sit RM26,781 apart, and how to raise it.

Aug 26, 2026Read
Connected Load vs Maximum Demand: What TNB Bills - illustrationTNB Bills & Tariffs

Connected Load vs Maximum Demand: What TNB Bills

Connected load is the sum of your nameplate ratings. Maximum demand is the highest 30-minute average your meter records, and it is the one TNB charges you for. Here is the difference, the demand factor that links them, and what it costs in ringgit.

Aug 26, 2026Read
TNB Tariff Categories Explained (RP4 2025) - illustrationTNB Bills & Tariffs

TNB Tariff Categories Explained (RP4 2025)

On 1 July 2025 TNB retired the C1, C2, E1 and E2 letters and replaced them with voltage-based categories, each with a General or Time-of-Use option. Here is how the new TNB tariff categories work, where your old letter lands, and what the five bill components actually cost you.

Aug 26, 2026Read