GAME LODGE PV SYSTEM OPTIONS
Homer energy modelling and trade-off analysis
Outline:
-
Baseline is current Eskom and current Diesel Generator
-
Modelling inputs
-
Eskom tariffs 2024/25 => 13% avg increase 2025
-
-
Eskom and current Diesel Generator with PV and Batteries – NOT Off-grid: Small 64% PV
-
Electrical & Consumption
-
Financial
-
-
Eskom and current Diesel Generator with PV and Batteries – NOT Off-grid: 84% PV
-
Electrical & Consumption
-
Financial
-
-
No Eskom, PV and Batteries added – Off-grid: 99.6% PV
-
Electrical & Consumption
-
Financial
-
-
Summary
Baseline is current Eskom and current Diesel Generator
Project inputs: Self financed 15%; Off balance sheet equiv. to ~21%
Grid tariffs: Eskom escalation
Other multi-year parameters (on top of inflation)
Batteries going down 1% p.a.
Inverters going down 0.5% p.a.
Diesel cost rising 1%
~6% for 5 yrs, starting yr 6.
Load shedding: One 2hr cycle per day
~13% for 5 yrs, starting yr 1.
Off Bal. Sheet:
Capital with 6% p.a. escalation. IRR method. Fixed monthly pmt over 10 years.
Eskom and current Diesel Generator with PV and Batteries – NOT Off-grid: Small 43% PV
Load profile modelled
146kW peak, ~68kW avg
Deferrable load: Aircons, geysers
Load 1: Restaurant etc
Load 2: Offices, chalets etc
Baseline with PV and Batteries added – Not Off-grid: Small 43% PV
Baseline with PV and Batteries added – Not Off-grid: 50% PV
No Eskom: Diesel Gen with PV and Batteries – Off-grid: 96% PV
Load profile modelled
146kW peak, ~68kW avg
Deferrable load: Aircons, geysers
Load 1: Restaurant etc
Load 2: Offices, chalets etc
No Eskom, PV and Batteries added – Off-grid: 96.6% PV
Summary:
-
End goal is to get off-grid and be self sufficient (Phase 3)
-
1: ~R4.36M: Grid with PV & Batteries; ~62% PV, ~38% Grid, LCOE R2.19/kWh
-
Own financing: PMT ~R70k p.m., O&M cost ~R73k p.m.; break even in year 2.
-
Off balance sheet fin: ~R89k35k p.m; Annual cost even in year 1.
-
-
2: ~R7.18M: Grid with PV & Batteries; ~84% PV, ~16% Grid. R2.56/kWh
-
Own financing: PMT ~R116k p.m., O&M cost ~R16k p.m.; break even in year 3.
-
Off balance sheet fin: ~R147k p.m; Annual cost even in year 1.
-
-
3:~R9.76M: >99%PV, <1% own diesel genset; OFF-GRID!
-
Own financing:
-
15% p.a, 10 yrs, PMT R157k p.m.; O&M cost ~R16k p.m.
-
Break even within 5 years. Thereafter electricity basically free.
-
-
Off balance sheet fin:
-
R200k p.m. for 10 yrs; O&M cost ~R16k p.m.
-
Annual cost even in yr 1.
-
-
-
Designed for a phased approach: Start with phase 1, later extend to 2 or 3.