1. ASK THE EXPERT SESSION Michael Ziloudis Solar PV Specialist

2. Michael Ziloudis Involved in PV since 2001 MSc in Renewable Energy & Environment Design Engineer and Project Manager - Solarcentury Advisor to large multinationals UK, Europe and SA From small Domestic to 90MWp Commercial Building-Integrated and Ground-Mounted

3. A FEW ISSUES TO PROVOKE QUESTIONS

4. ORIENTATION

6. MODULE POWER RATING!

7. SIMULATION SOFTWARE

8. SAM GOOGLE EARTH SKETCH UP SOLID EDGE FREE SOFTWARE

9. Case study – Domestic House Retrofit

20. CORRECTLY MATCH THE INVERTER TO THE MODULES Often done incorrectly Understand inverter types Use software that allows you to view the best fit Understand the inverter limitations Check under voltages as well as over voltages Make sure inverter operates at highest efficiency

22. CALCULATE SHADING LOSSES Unmanaged shading can have a dramatic effect on yield Regular shading can lead to hot spots and diode failure Orientation of modules is important

24. AVOID MISMATCH LOSSES Module mismatch can come from orientation, shading and from a range of power levels or voltages Inverter choice can mitigate

25. SITE THE INVERTER IN A SUITABLE PLACE Loft spaces suffer from swings in temperature Garages often require DC cable runs through house

26. ALWAYS CHECK WIND LOADING Know your wind- loading calculations and work-out required roof fixings and edge constraints Understand differences for topography and roof height

27. It doesn’t happen very often but when it does it can be serious!

28. Wind Loading Course

29. Modules in Edge zones in dark blue and corner zones in beige

31. Roof Zones pitched roofs with gable ends

32. P Rk = characteristic load bearing capacity in kN

33. Hangar Bolt Use

34. Slate Roof Solution

35. What else is out there?

36. Thank You First UK UKAS Accredited Test Centre for PV Consultancy and Training