Are Your Panels Working at Their Best?

Summer is when solar panels in Surrey should perform at their best, but that doesn’t always mean they are.

Longer daylight hours across Woking, Esher, Guildford and Cobham should increase generation, but several factors can still reduce efficiency.

What affects summer solar performance?

Even in strong sunshine, output can be impacted by:

• High temperatures – panels become less efficient when overheated
• Shading changes – trees in full leaf create new shadows in summer
• Dust & pollen – dry spells can leave a thin layer on panels
• Increased home usage – fans, home working, EV charging, etc.

What good summer performance looks like

A healthy system should show:

• Consistent daily generation peaks
• Higher output between 10am–4pm
• Stable inverter readings
• No sudden drops in production

If your system isn’t showing these patterns, it may need checking.

Simple ways to improve efficiency

Homeowners in Surrey can improve output with the following simple actions:

• Keep monitoring apps (check weekly)
• Ensure panels are free from heavy dirt or debris
• Trim overhanging branches where needed
• Book a professional system check if performance drops

Even small inefficiencies during peak summer months can add up over time.

Your solar system should be at its strongest during summer, so if performance feels lower than expected, it’s worth investigating early rather than waiting.