Exemplary Weather and Energy (EWE) Index August 2023

The Exemplary Real Time Year weather files (RTYs), current Reference Meteorological Year files (RMYs) and Ersatz Future Meteorological Years (EFMYs) used for these monthly simulations are available for purchase to allow clients to simulate their own designs for energy budgeting and monitoring rather than rely on analogy with the performance of these archetypical buildings and systems. Solar irradiation data courtesy of Solcast.

Archetypical buildings and systems

3-storey office

10-storey office

Supermarket

5kW domestic PV system

ADELAIDE

Energy Index (%)


10-storey		3-storey		Supermarket
Heating	Cooling	Heating	Cooling	Heating	Cooling
-42	+7	-32.9	+15.1	-11.4	+22.9
Solar PV
+1.5%

The solar PV simulation output results were 1.5% higher than the long-term average. Heating energy consumption was 42%, 32.9%, and 11.4% lower for the 3-storey office, 10-storey office, and the supermarket, respectively. Cooling energy consumption was 7%, 15.1% and 22.9% higher for the 3-storey, 10-storey offices and the supermarket, respectively as well.

Adelaide experienced a comparably humid and warmer August compared to the long-term average. The wind speeds tended to be slightly lower throughout the day, while the GHI tended to be slightly higher.

Weather Index


Temperature (°C)
Mean Min	Mean Avg	Mean Max
+0.7	+0.7	+1.1


Relative Humidity (%pt)
Mean Min	Mean Avg	Mean Max
+6.2	+2.0	+1.7


Daily Sums of GHI (%)
Mean Min	Mean Avg	Mean Max
-26.3	+2.3	-3.1

BRISBANE

Energy Index (%)


10-storey		3-storey		Supermarket
Heating	Cooling	Heating	Cooling	Heating	Cooling
-83	+53.5	-78.4	+40.3	-61.9	+62.3
Solar PV
-6.4%

The solar PV simulation output results were 6.4% lower than the long-term average. Heating energy consumption was 83%, 78.4%, and 61.9% lower, while cooling energy consumption was 53.5%, 40.3%, and 62.3% higher for the 3-storey office, 10-storey office, and the supermarket, respectively.

Brisbane experienced a comparably humid and warmer August compared to the long-term average. The wind speeds and the GHI were lower.

Weather Index


Temperature (°C)
Mean Min	Mean Avg	Mean Max
+3.5	+2.1	+0.8


Relative Humidity (%pt)
Mean Min	Mean Avg	Mean Max
+13.3	+6.4	-0.3


Daily Sums of GHI (%)
Mean Min	Mean Avg	Mean Max
-13.3	-3.8	-3.3

CANBERRA

Energy Index (%)


10-storey		3-storey		Supermarket
Heating	Cooling	Heating	Cooling	Heating	Cooling
-23	+41	-20.2	+36	-5.8	+12.3
Solar PV
+1.9%

The solar PV simulation output results were 1.9% higher than the long-term average. Cooling energy consumption was 41%, 36% and 12.3% higher for the 3-storey office, 10-storey office, and the supermarket, respectively.

Canberra experienced a comparably humid and warmer August compared to the long-term average. The wind speeds were lower and the GHI was similar.

Weather Index


Temperature (°C)
Mean Min	Mean Avg	Mean Max
-0.3	+0.2	+0.9


Relative Humidity (%pt)
Mean Min	Mean Avg	Mean Max
+8.0	+9.3	+6.5


Daily Sums of GHI (%)
Mean Min	Mean Avg	Mean Max
+108.7	+2.5	-3.9

DARWIN

Energy Index (%)


10-storey		3-storey		Supermarket
Heating	Cooling	Heating	Cooling	Heating	Cooling
N.A.	+11.1	N.A.	+10.9	N.A.	+9.9
Solar PV
-2.7%

The solar PV simulation output results were 2.7% lower than the long-term average. Cooling energy consumption was 11.1%, 10.9% and 9.9% higher for the 3-storey, 10-storey offices and the supermarket, respectively.

Darwin experienced a slightly less humid and warmer August compared to the long-term average. The wind speeds were lower while the GHI was higher.

Weather Index


Temperature (°C)
Mean Min	Mean Avg	Mean Max
+1.0	+1.1	+1.7


Relative Humidity (%pt)
Mean Min	Mean Avg	Mean Max
-2.1	-3.1	-3.6


Daily Sums of GHI (%)
Mean Min	Mean Avg	Mean Max
-3.2	+0.7	+1.4

HOBART

Energy Index (%)


10-storey		3-storey		Supermarket
Heating	Cooling	Heating	Cooling	Heating	Cooling
-61	N.A.	-61	N.A.	-46	N.A.
Solar PV
-1.1%

The solar PV simulation output results were 1.1% lower than the long-term average. Heating energy consumption was 61% lower for the 3-storey office and the supermarket, and 46% lower for the 10-storey office. Cooling energy consumption was 106% and 100% higher for the 3-storey and 10-storey offices, respectively.

Hobart experienced a less humid and warmer August compared to the long-term average. The wind speeds were lower and the GHI were higher.

Weather Index


Temperature (°C)
Mean Min	Mean Avg	Mean Max
+0.5	+0.7	+0.9


Relative Humidity (%pt)
Mean Min	Mean Avg	Mean Max
-2.2	-1.2	+0.1


Daily Sums of GHI (%)
Mean Min	Mean Avg	Mean Max
-16.1	+1.6	-0.3

MELBOURNE

Energy Index (%)


10-storey		3-storey		Supermarket
Heating	Cooling	Heating	Cooling	Heating	Cooling
-32	N.A.	-29	N.A.	+15	N.A.
Solar PV
-2.9%

The solar PV simulation output results were 2.9% lower than the long-term average. Heating energy consumption was 32% and 29% lower for the 3-storey and 10-storey offices, respectively. Cooling energy consumption was 100% lower for the supermarket.

Melbourne experienced a comparably humid and warmer August compared to the long-term average. The GHI was higher than the average.

Weather Index


Temperature (°C)
Mean Min	Mean Avg	Mean Max
+1.0	+1.1	+1.2


Relative Humidity (%pt)
Mean Min	Mean Avg	Mean Max
+8.1	+7.2	+8.1


Daily Sums of GHI (%)
Mean Min	Mean Avg	Mean Max
-19.4	+1.4	-8.5

PERTH

Energy Index (%)


10-storey		3-storey		Supermarket
Heating	Cooling	Heating	Cooling	Heating	Cooling
+9	+66	+7	+46	-6	+155
Solar PV
+9.1%

The solar PV simulation output results were 9.1% higher than the long-term average. Heating energy consumption was 9% and 6% higher for the 3-storey office and 10-storey office and 6% lower for the supermarket, while cooling energy consumption was 66%, 46%, and 155% higher for the 3-storey office, 10-storey office, and the supermarket, respectively.

Perth experienced a less humid and warmer August compared to the long-term average. The wind speeds were notably lower and the GHI was notably higher.

Weather Index


Temperature (°C)
Mean Min	Mean Avg	Mean Max
-0.3	+0.8	+1.9


Relative Humidity (%pt)
Mean Min	Mean Avg	Mean Max
-1.6	-0.9	-0.4


Daily Sums of GHI (%)
Mean Min	Mean Avg	Mean Max
-17.4	+6.6	-1.5

SYDNEY

Energy Index (%)


10-storey		3-storey		Supermarket
Heating	Cooling	Heating	Cooling	Heating	Cooling
-48	+61	-43	+40	-38	+68
Solar PV
-1.8%

The solar PV simulation output results were 1.8% lower than the long-term average. Heating energy consumption was 48%, 43% and 38% lower for the 3-storey office, 10-storey office, and the supermarket, respectively. Cooling energy consumption was 61%, 40%, and 68% higher for the 3-storey office, 10-storey office, and supermarket, respectively.

Sydney experienced a relatively more humid and warmer August compared to the long-term average. The wind speeds and the GHI were higher.

Weather Index


Temperature (°C)
Mean Min	Mean Avg	Mean Max
+1.2	+0.8	+0.9


Relative Humidity (%pt)
Mean Min	Mean Avg	Mean Max
+10.7	+14.4	+12.1


Daily Sums of GHI (%)
Mean Min	Mean Avg	Mean Max
-9.8	+0	-5.3

Exemplary Weather and Energy (EWE) Index August 2023

Archetypical buildings and systems

3-storey office

10-storey office

Supermarket

5kW domestic PV system

ADELAIDE

BRISBANE

CANBERRA

DARWIN

HOBART

MELBOURNE

PERTH

SYDNEY

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Archetypical buildings and systems

3-storey office

10-storey office

Supermarket

5kW domestic PV system

ADELAIDE

BRISBANE

CANBERRA

DARWIN

HOBART

MELBOURNE

PERTH

SYDNEY

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