Solar Energy & The Power Grid: Daily Energy Usage Explained

In Malaysia, solar energy systems typically work together with the national grid (TNB), forming an efficient and sustainable energy solution. Understanding how solar power operates throughout the day helps users better appreciate how savings are generated.

☀️ Daytime: Solar Power Generation (7:00 AM – 7:00 PM)

Solar panels begin generating electricity as sunlight increases:

• 7:00 AM – 10:00 AM
  Solar generation is still low; part of the electricity is sourced from the TNB grid.
• 10:00 AM – 2:00 PM (Peak Generation Period)
  Solar panels reach maximum efficiency, often covering most or all electricity needs.
• 2:00 PM – 7:00 PM
  Power generation gradually decreases but still supports partial usage.

👉 During the day, if solar production exceeds consumption:

• Excess electricity is exported to the TNB grid
• This helps offset electricity bills under the Net Energy Metering (NEM) scheme

🌙 Nighttime: Grid Dependency (7:00 PM – 7:00 AM)

After sunset, solar panels stop generating power:

• All electricity is supplied by the TNB grid
• Energy demand remains high, especially from evening to midnight

👉 This is why daytime surplus energy is important—it helps reduce nighttime electricity costs.

⚡ Key Benefits

Installing a solar system provides several advantages:

• ✅ Lower Electricity Bills: Reduce dependency on grid power
• ✅ Energy Offset (NEM): Export excess energy back to the grid
• ✅ Eco-Friendly: Reduce carbon footprint
• ✅ Long-Term Savings: Reliable system with lasting returns

📊 Conclusion

A solar energy system does not replace the grid entirely—it works alongside it:

• Daytime → Use solar + export excess energy
• Nighttime → Use electricity from the grid