Peak shaving utilizing batteries in commercial and retail ...
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Peak shaving utilizing batteries in commercial and retail properties by Ian Burger, SOLA Future Energy
Transcript of Peak shaving utilizing batteries in commercial and retail ...
Peak shaving utilizing batteries in commercial and retail properties
by Ian Burger, SOLA Future Energy
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[1] G.H. Muller and C.F. Landy: "Lithium Ion Battery costs and market", Bloomberg new energy finance, July 2017
Decrease in Lithium-ion Batteries
and increasing tariffs
0%
5%
10%
15%
20%
25%
30%
35%
R-
R100.00
R200.00
R300.00
R400.00
R500.00
R600.00
R700.00
2007 2009 2011 2013 2015 2017 2019 2021 2023 2025 2027 2029
Tariff Increase Demand 2017
0
200
400
600
800
1000
1200
Total Load PV Provided Grid (Grid & PV)
New peak Old peak
Demand savings – Ideal case
Demand savings – Retail with
wider load profiles
New peakOld peak
Impact of batteries on demand saving
48% reduction in battery storage capacity when coupled with PV
Full month load, incomer and
battery contribution
Current Jul 2018 Jul 2019 Jul 2020
Input
Batteries (R/kWh) R3 735 R4 047 R4 414 R4 796Inverters (R/kWp) R1 200 R1 200 R1 200 R1 200Control and BoS (Fixed) R990 000 R990 000 R990 000 R990 000CoCT LPU MV Energy (c/kWh) 72,4c 81,8c 92,5c 104,5cCoCT LPU MV Demand (R/kVA) R204,70 R231,31 R261,38 R295,36O&M R18 000 R19 080 R20 225 R21 438
OutputInverter size (kVA) 150 150 150 150Battery capacity (kWh) 300 300 300 300IRR (%) 16% 18,5% 21,3% 24,4%
Model parameters
Impact of reducing battery price and increase tariff on IRR
Optimisation curves for inverter
size and battery capacity
0.00%2.00%4.00%6.00%8.00%
10.00%12.00%14.00%16.00%18.00%20.00%
50 100 150 200 250 300 350 400 450
IRR
Inverter Size (kVa)
0.00%
2.00%
4.00%
6.00%
8.00%
10.00%
12.00%
14.00%
16.00%
18.00%
20.00%
300 350 400 450 500 550 600 650 700 750 800 850 900 950
IRR
Storage Size (kWh)50 kVa 100 kVa 150 kVa
Conclusion
• Ancillary services:• frequency regulation;
• voltage support
• reactive power correction
• Adding stability to the grid, the hybrid PV battery systems
should incentivize the regulator to encourage more of these
systems to the grid.
• Battery system retrofitted or installed as hybrid with new PV
plants
• Demand saving guarantee rather than risk
• Hybrid PV battery systems will be essential part of future
energy mix
www.solafuture.co.za |[email protected]
SOLA FUTURE ENERGY
@solafuture
@solafuture
facebook.com/solafuture
Ian Burger: [email protected]
