Roof suitability
Does my roof need to face south for solar panels?
A roof does not have to face south to be worth assessing for solar. East- and west-facing roof faces can also be useful; the best arrangement depends on generation, shading, available space and when electricity is used.
By VERA · Reviewed
Direction changes the generation pattern
Different roof faces receive sunlight at different times. That changes the shape of generation through the day, as well as the annual total. A comparison that considers only one headline yield figure can miss when the electricity is available.
Compare complete systems
Compare realistic layouts on the actual roof faces. A smaller south-facing arrangement and a larger east–west arrangement are not equivalent simply because they use the same type of panel. Roof incline and shade also affect the result, so direction should not be judged in isolation.
Match the roof to the household
Electricity used as it is generated can have a different value from electricity exported and bought back later. Start with the roof’s generation potential, then examine household usage and tariff assumptions. VERA helps establish the property-specific starting point for your quote.
Sources and further reading
This guide gives general information. Your assessment is an estimate; installation design, suitability and price need confirmation for your property.
Keep exploring
- Is my roof suitable for solar panels?
- How many solar panels do I need, and will they fit?
- Can I install solar panels on a flat roof?