Solar Tariff Switch Calculator
Compare TNB Flat Tariff vs. Time-of-Use (ToU) Tariff with or without solar. Find out which tariff strategy maximizes your monthly savings and offsets your initial investment fastest.
🔧 Custom Parameters
Configure your household usage and system specifications.
RM
RM 100
RM 1,000
RM 2,000
RM 2,500
Equivalent to approximately 1,263 kWh monthly.
%
10% (Off-Peak heavy)
30% (Default)
50%
90% (Peak heavy)
Percentage of total power used during TNB Peak Hours: 2:00 PM to 10:00 PM (Monday - Friday).
%
10%
35% (Average)
60%
100%
Percentage of your electricity consumed during active solar production hours (8:00 AM to 6:00 PM).
Auto-Recommended
18
Panels
4 Panels (2.68 kWp)
18 Panels (12.06 kWp)
30 Panels (20.10 kWp)
40 Panels (26.80 kWp)
Capacity
12.06 kWp
Solar Panels
Trina Solar Vertex S+
Est. Generation
1,236 kWh
📊 Scenario Cost Comparison
Flat (No Solar)
Baseline
Estimated Monthly Bill
RM 600
Your current standard tariff setup.
Flat + Solar
Standard Solar
Estimated Monthly Bill
RM 180
Saves RM 420 (70% reduction)
ToU (No Solar)
Tariff Switch Only
Estimated Monthly Bill
RM 580
Saves RM 20 (3% reduction)
ToU + Solar
Ultimate Combo
Estimated Monthly Bill
RM 120
Saves RM 480 (80% reduction)
| Bill Component (RM/Month) | Flat (No Solar) |
Flat (With Solar) |
ToU (No Solar) |
ToU (With Solar) |
|---|---|---|---|---|
| Net Consumption Volume (kWh) | 1,263 | 821 | 1,263 | 654 |
| Base / Off-Peak Energy Charge | 341.39 | 221.92 | 215.96 | 111.91 |
| Weekday Peak Energy Charge | - | - | 107.91 | 48.33 |
| Capacity Charge | 57.47 | 37.36 | 57.47 | 29.76 |
| Network Charge | 162.29 | 105.49 | 162.29 | 84.04 |
| Retail Charge | 10.00 | 10.00 | 10.00 | 10.00 |
| EEI Rebate (Solar Offset) | - | -37.36 | - | -29.76 |
| KWTBB Levy (1.6%) | 9.00 | 5.80 | 9.00 | 4.30 |
| Service Tax (SST 8%) | 18.23 | 10.23 | 17.20 | 8.33 |
| Solar Export Credits (ATAP) | - | -87.15 | - | -120.44 |
| Monthly Net Payable | RM 598.00 | RM 198.00 | RM 583.00 | RM 114.00 |