Article
How much solar energy can be generated and what are the typical savings on an electricity bill?
February 7, 2024
The solar panels on your roof only generate power when there is sunlight. The greatest output happens during the sunniest part of the day and produces more energy in summer than in winter. In Canberra to maximise the amount of energy your panels generate each year, panels should be installed north-facing and tilted at 30 degrees to the horizon – most homes in Canberra have a typical 30-degree roof pitch.
Here is an overview of how much annual generation you can expect to get based on different panel orientations and tilt (expressed as a percentage of the maximum possible).
| Direction | 0° (Flat) | 10° | 20° | 30° | 40° | 50° | 60° (Steep) |
| W (270°) | 87% | 87% | 86% | 83% | 79% | 75% | 70% |
| NW (315°) | 87% | 93% | 96% | 97% | 95% | 92% | 87% |
| N (0°) | 87% | 94% | 98% | 100% (Optimum) | 99% | 96% | 91% |
| NE (45°) | 87% | 92% | 95% | 95% | 94% | 91% | 86% |
| E (90°) | 87% | 88% | 86% | 84% | 80% | 76% | 71% |
Tilt relative to horizon
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