Consumption Analysis
Raw data analysis: Annual consumption by point and TOU period
Total Annual
71.6 GWh
71,600,000 kWh
Peak (19%)
13.57 GWh
@ R4.20/kWh avg
Standard (51%)
36.52 GWh
@ R1.56/kWh
Off-Peak (30%)
21.48 GWh
@ R1.08/kWh
2025/2026 Tariff Structure - Megaflex
High-Demand (June - August)
Winter Peak Period
Peak
07:00 - 10:00 & 18:00 - 20:00
Standard
06:00-07:00, 10:00-18:00, 20:00-22:00
Off-Peak
22:00 - 06:00, Weekends & Public Holidays
Low-Demand (September - May)
Standard Period
Peak
07:00 - 10:00 & 18:00 - 20:00
Standard
06:00-07:00, 10:00-18:00, 20:00-22:00
Off-Peak
22:00 - 06:00, Weekends & Public Holidays
Key Insight: During High-Demand season (winter), peak tariffs are 6x more expensive than off-peak (R6.47 vs R1.08/kWh). This is why BESS arbitrage generates maximum value during June-August, providing R12M in savings during just these 3 months.
71.6 GWh total annual consumption
R137.15M total annual energy cost
Annual consumption breakdown by point and TOU period
Seasonal variation with winter peak (June-August)
Winter Peak (Jun-Aug): Consumption increases by 20-30% during winter months due to heating demand. This coincides with Eskom's high-demand season when peak tariffs reach R6.47/kWh, making BESS arbitrage most valuable during this period.
Annual consumption breakdown by location and TOU period
| Location | Type | Annual (kWh) | Peak (kWh) | Standard (kWh) | Off-Peak (kWh) | Share |
|---|---|---|---|---|---|---|
| Graaff-Reinet | Urban Center | 28 640 000 | 5 441 600 | 14 606 400 | 8 592 000 | 40.0% |
| Nieu-Bethesda | Town | 7 160 000 | 1 360 400 | 3 651 600 | 2 148 000 | 10.0% |
| Aberdeen | Town | 5 728 000 | 1 088 320 | 2 921 280 | 1 718 400 | 8.0% |
| Klipplaat | Town | 3 580 000 | 680 200 | 1 825 800 | 1 074 000 | 5.0% |
| Willowmore | Town | 5 012 000 | 952 280 | 2 556 120 | 1 503 600 | 7.0% |
| Steytlerville | Town | 3 580 000 | 680 200 | 1 825 800 | 1 074 000 | 5.0% |
| Municipal Infrastructure | Infrastructure | 10 740 000 | 2 040 600 | 5 477 400 | 3 222 000 | 15.0% |
| Agricultural & Rural | Rural | 7 160 000 | 1 360 400 | 3 651 600 | 2 148 000 | 10.0% |
| TOTAL | 71 600 000 | 13 604 000 | 36 516 000 | 21 480 000 | 100% | |
Total Annual
71.6 GWh
Peak Cost
R 57.14M
40% of bill, 19% of usage
Standard Cost
R 56.96M
44% of bill, 51% of usage
Off-Peak Cost
R 23.20M
16% of bill, 30% of usage
Baseline Eskom cost before SSEG implementation
Peak Period Cost
13,570,000 kWh x R4.20/kWh (weighted avg)
R 56.99M
Standard Period Cost
36,516,000 kWh x R1.56/kWh
R 56.96M
Off-Peak Period Cost
21,480,000 kWh x R1.08/kWh
R 23.20M
Total Baseline Eskom Cost
Before demand charges and other fees
R 137.15M
Note: The total baseline cost of R128.25M/year referenced in the framework document includes network charges, demand charges, and other regulatory fees that are calculated separately. The energy cost calculation above demonstrates the TOU tariff impact on the municipality's consumption profile.
SSEG Multi-Asset Trading Framework
Download the complete executive narrative document including detailed calculations, 10-year projections, risk analysis, and strategic recommendations.