Short Answer: Yes — and here’s exactly how.
Many homeowners believe solar panels only work if your roof faces due south. It’s a common myth — and one that stops people from unlocking hundreds in annual savings.
The truth? Even east- and west-facing roofs can produce 70–85% of optimal solar output. That’s still enough to generate real financial and carbon-saving benefits.
Orientation Breakdown
How Solar Performs at Different Angles:
Roof Orientation |
Efficiency Compared to South |
Works Well? |
| South | 100% | Best |
| Southeast / Southwest | 85–95% | Very good |
| East / West | 70–85% | Still viable |
| Northwest / Northeast | 50–65% | Needs micro-inverters or system design |
| North | <40% | Generally not recommended unless flat roof with tilt system |
Did you know? A west-facing system may actually produce more usable electricity if your household uses energy in the afternoon.
Shading and Obstructions
What if my roof is partially shaded?
Shade from trees, chimneys, or nearby buildings can reduce output — but modern technology solves this.
Solutions include:
- Panel optimisers (individual panel performance maximisation)
- Micro-inverters (panels work independently rather than in series)
- Split arrays (different roof sections used for different times of day)
What About Complex or Flat Roofs?
- Flat Roofs: Perfect for adjustable mounting brackets — panels can face optimal angles regardless of roof structure
- Multi-surface Roofs: We split systems into morning/afternoon-facing arrays
- Irregular Designs: Can often still produce high yield using optimised string layouts
Savings Still Add Up
Even at 80% efficiency, solar PV can:
- Flat Roofs: Perfect for adjustable mounting brackets — panels can face optimal angles regardless of roof structure
- Multi-surface Roofs: We split systems into morning/afternoon-facing arrays
- Irregular Designs: Can often still produce high yield using optimised string layouts
Can I combine east + west-facing roofs in one system?
Yes. In fact, it balances solar generation throughout the day.
Will the system cost more if not south-facing?
Not usually. The design may change slightly but overall install cost is similar.
Will I qualify for SEG or MCS?
Yes — as long as your system is MCS-certified, you’re eligible regardless of direction.
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