Exemplary Weather and Energy (EWE) Index July 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 (%)

The solar PV simulation output results were 4.7% higher than the long-term average. Heating energy consumption was 39%, 36%, and 32% lower for the 3-storey office, 10-storey office, and the supermarket, respectively. Cooling energy consumption was 20% and 42% higher for the 3-storey and 10-storey offices, respectively, though 46% lower for the supermarket.

Adelaide experienced a comparably humid and warmer July 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



BRISBANE

Energy Index (%)

The solar PV simulation output results were 10.9% lower than the long-term average. Heating energy consumption was 33%, 36%, and 12% lower, while cooling energy consumption was 17.5%, 19.9%, and 25.7% higher for the 3-storey office, 10-storey office, and the supermarket, respectively.

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

Weather Index



CANBERRA

Energy Index (%)

The solar PV simulation output results were 21.2% higher than the long-term average. Cooling energy consumption was 72% higher for the 3-storey office, and 86% lower for the 10-storey office.

Canberra experienced a comparably humid and warmer July compared to the long-term average. The wind speeds and the GHI were notably higher.

Weather Index



DARWIN

Energy Index (%)

The solar PV simulation output results were 7.8% lower than the long-term average. Cooling peak load was 2.3% and 2.6% lower for the 3-storey and 10-storey offices, respectively.

Darwin experienced a slightly more humid and warmer July compared to the long-term average. The wind speeds and the GHI were lower.

Weather Index



HOBART

Energy Index (%)

The solar PV simulation output results were the same as the long-term average. Heating energy consumption was 27% lower for the 3-storey office and the supermarket, and 24% lower for the 10-storey office. Cooling energy consumption was 64% and 59% higher for the 3-storey and 10-storey offices, respectively.

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

Weather Index



MELBOURNE

Energy Index (%)

The solar PV simulation output results were 7.8% higher than the long-term average. Heating energy consumption was 41% and 33% higher 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 July compared to the long-term average. The wind speeds tended to be lower throughout the day, while the GHI was higher.

Weather Index



PERTH

Energy Index (%)

The solar PV simulation output results were 6.2% higher than the long-term average. Heating energy consumption was 35%, 34%, and 27% lower, while cooling energy consumption was 19%, 54.3%, and 10.6% higher for the 3-storey office, 10-storey office, and the supermarket, respectively.

Perth experienced a comparably humid and warmer July compared to the long-term average. The wind speeds were higher and the GHI was comparable.

Weather Index



SYDNEY

Energy Index (%)

The solar PV simulation output results were 12.8% higher than the long-term average. Heating energy consumption was around 18% lower for all archetypes. Cooling energy consumption was 32%, 34%, and 17% higher for the 3-storey office, 10-storey office, and supermarket, respectively.

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

Weather Index



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