How does the Yield Optimizer help with planning flat-roof solar systems in particular? When planning tilted solar arrays on flat-roof buildings - for example on warehouses, office buildings, or retail shopping centers - a Yield Optimization analysis is highly recommended. You'll have free choice over the installation angles in regards to tilt and orientation. Take advantage of our offer to find the optimum installation angles best fitting to your local weather conditions. Adjustments up to 10 degrees occur quite regularly and lead to a rise in electricity output by as much as 1%. In addition to identifying the optimum installation angles, the Yield Optimizer contains a prediction of expected energy yield in kWh / kWp.