Can high levels of renewable energy be cost effective using battery storage? Cost of renewable energy scenarios for an isolated electric grid in Western Australia | Renewable Energy and Environmental Sustainability

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Table 12

Estimated emission intensity and provisional energy cost in $/MWh for each partial renewable scenario for the SWIS electrical grid under different carbon pricing schemes (20 runs).

Scenario	% RE generation	Emission intensity (kgCO₂e/MWh)	Cost ($/MWh) no carbon price	Cost ($/MWh) $24/tonne	Cost ($/MWh) $70/tonne
BAU	17	667	95.7	111	142
1	42	444	88.4	99.2	119
2	47	394	84.6	94.2	112
3	52	301	86.1	93.0	107
4	56	273	86.2	92.7	105
5	69	199	93.9	98.2	108
6	72	187	97.7	102	111
7	75	165	100	104	111
8	79	145	104	107	114
9	85	124	119	122	127
10	90	85.7	125	127	132
11	94	61.4	132	134	137
12	96	53.4	141	143	145
13	97.4	50.8	153	155	157
14	97.8	47.6	156	158	159
15	98.8	45.3	164	165	168
16	99.5	51.9	192	193	196
17	99.9	59.5	219	222	223

BAU is the business as usual case of using mostly conventional fossil generation. All costs and prices are in Australian dollars.

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