Understanding Solar ATAP Offset Rate

How Energy Charge Works Under Malaysia’s New Rooftop Solar Framework

Malaysia is entering a new era of rooftop solar with the Solar Accelerated Transition Action Programme (Solar ATAP), effective December 2025. One of the biggest shifts under ATAP is how exported solar energy is credited.

Unlike previous Net Energy Metering (NEM) schemes or SMP-based approaches, Solar ATAP credits exported solar energy only at the Energy Charge (EC) component of the electricity tariff. This means self-consumption and battery storage become more important than ever.

What Is Energy Charge (EC)?

Under Malaysia’s domestic electricity tariff, your monthly bill is composed of:

• Energy Charge (EC) – Cost of generating electricity

• Network Charge – Transmission & distribution

• Capacity Charge – Power availability

• Retail Charge, SST & KWTBB

Solar ATAP offsets your exported solar energy only against the Energy Charge.

Current Energy Charge under ATAP:

Case Study: 6.20 kWp Solar System for a Household

Assumptions:

• Household monthly consumption: 675 kWh (EC = RM0.2703/kWh)

• Solar system: 6.20 kWp

• Average solar production: 708 kWh/month (≈3.8 sun hours/day)

• Household load profile: 30% day (202.5 kWh), 70% night (472.5 kWh)

• Battery: Dyness 16.07 kWh

1 Scenario: No Solar Installed (Baseline)

Monthly bill calculation:

• Energy cost: 675 × RM0.4443 ≈ RM299.87

• Fixed retail charge: RM10.00

• KWTBB (1.6%): 299.87 × 1.6% ≈ RM4.80

• SST (8% for >600 kWh): 299.87 × 8% ≈ RM23.99

Total monthly bill: RM299.87 + 10 + 4.80 + 23.99 ≈ RM338.66

2 Scenario: Solar ATAP Without Battery

• Self-consumption (30% daytime): 202.5 kWh × RM0.4443 ≈ RM89.97 saved

• Exported energy (70%): 505.5 kWh × EC (RM0.2703) ≈ RM136.70 credited

• Remaining grid import: 472.5 kWh

Import charges:

• Energy: 472.5 × RM0.2703 ≈ RM127.76

• Network: 472.5 × RM0.1285 ≈ RM60.71

• Capacity: 472.5 × RM0.0455 ≈ RM21.50

Subtotal before fixed charges: 127.76 + 60.71 + 21.50 = RM209.97

Net after export credit: 209.97 – 136.70 ≈ RM73.27

Additional charges:

• Fixed retail charge: RM10.00

• KWTBB (1.6%): 73.27 × 1.6% ≈ RM1.17

• SST (8%): 73.27 × 8% ≈ RM5.86

Final monthly bill: 73.27 + 1.17 + 5.86 + 10 ≈ RM90.30

Savings vs baseline: 338.66 – 90.30 ≈ RM248.36 (~73%)

Even without a battery, households save ~73% of electricity costs under ATAP.

3 Scenario: Solar ATAP With Dyness 16.07 kWh Battery

• Battery stores excess solar for night use (full 16.07 kWh/day)

• Self-consumption + battery offsets most night usage

Self-consumption & battery offset: 202.5 + 16.07 × 30 days ≈ 693.6 kWh

• Total solar used: 693.6 kWh × RM0.4443 ≈ RM307.92 saved

Remaining grid import: 675 – 693.6 = 0 kWh

Additional charges:

• Fixed retail charge: RM10.00

• KWTBB (1.6%): 10 × 1.6% ≈ RM0.16

• SST (8%): 10 × 8% ≈ RM0.80

Final monthly bill: 10 + 0.16 + 0.80 ≈ RM10.96

Savings vs baseline: 338.66 – 10.96 ≈ RM327.70 (~97%)

The battery maximizes self-consumption, bringing savings back to almost 100%, similar to NEM 3.0.

Comparison Table

Key Takeaways

• Under Solar ATAP, exported energy is credited only at Energy Charge, making batteries essential for maximum savings.

• Households with daytime load + battery can achieve ~97% bill savings.

• Battery sizing tip: Dyness 16.07 kWh covers daily surplus (≈15–16 kWh/day), ensuring near-full self-consumption.

• Solar ATAP encourages households to use energy intelligently, reducing bills while supporting renewable energy.

Final Thoughts

Solar ATAP represents a significant step forward in Malaysia’s clean energy journey. While exported energy credit is lower than NEM 3.0, households can still achieve near-zero electricity bills by maximizing self-consumption and integrating battery storage like Dyness 16.07 kWh.

At Solar Sunyield, we provide expert guidance from solar system design, installation, and battery integration, ensuring every kilowatt of solar energy is fully utilized. Start saving on electricity today and take a step toward energy independence and sustainability in Malaysia.