Figure 1
A flowchart illustrating the research method for optimising PV arrays in existing buildings. Step 1, labeled as Literature Review, involves pinpointing the research problem, defining the scope of work, and considering factors for designing PV arrays in existing buildings. Step 2, labeled as BIM Model Generation, includes 3D model design, measurement of total roof area, incorporating GIS data into Revit, and GIS data collection. Steps 3&4, labeled as Optimisation Stage 1 and Stage 2, focus on determining the optimal tilt angle using weather data, sunlight pattern, radiation analysis, sunlight analysis, shading assessment and running simulations. Research method