1. SOLAR FEASIBILITY STUDY
BY
PREMKUMAR.E
FOR ROOFTOP AND GROUND MOUNTED PROJECTS

2. Solar Feasibility Study
■ The first step in obtaining solar energy is having a solar feasibility study done.
■ It plays very important role while designing Solar PV System.
■ With the solar feasibility in hand, it is easier to prepare accurate Bill Of Material (BOM).
■ It is used to find out any problems associated with the project (and how to solve them).

3. Information to be collected during Site Survey
■ Site Physical Details
– Reserved Roof space for Mounting Solar PV panels.
– Type of Mounting System required
■ RCC Roof (Normal)
■ RCC Roof (Elevated)
■ Galvalume Sheet Mounted
– Orientation of the Building (True South or With some Azimuth angle).
– Tree shading and any other factors that will affect system production.
– Height of the Building.
– Exact Latitude & Longitude details.

4. RCC Roof Mounted (Normal) RCC Roof Mounted (Elevated)

5. Galvalume Sheet Roof Mounted

6. True South Orientation With Azimuth Angle

7. Structure Details
■ RCC Roof
– Existing Pillar/Column Position.
– Slab Thickness and Height of parapet wall
■ Galvalume Shed
– Sheet Profile.
– Existing Truss and Purlin details.
– Turbo vents and Skylight Position.

8. Component Placement Details
■ Confirm Inverter Placement details with Client – It reflects in DC cable Loss & Cost.
■ Lightning Arrestor Placements
■ Earth pit Location – This Should be confirmed & Approved by Client.
Measure the Cable Distance
■ Get the Exact Distance between Module Array & Inverter.
■ Cable Routing Confirmed by Client (From ACDB to Existing LT panel)
■ LA Down conductor length.
■ Earthing Cable Length from PV Array, Inverter to Earth pit

9. Electrical Details of the site
■ Interfacing Voltage Range
– For Residential Purpose (1 Phase/3 phase)
– For Commercial purpose (LT Voltage/HT Voltage) with Voltage Range.
■ Get Client Electrical SLD ( where we need interface)
■ Availability of Spare Feeder (to feed our generated solar energy)
- If Not, Check Provision (Space) to place new spare feeder
- Get the details about Spare feeder (Client Scope or Swelect Scope)
■ Existing DG Details (Make,Capacity, RPF Relay Availability)
■ Load Details
– Base Load
– Peak Load
■ Power Shedding Time (if any)

10. Sample Client Electrical SLD

11. LT Panel With Spare Feeder Provision for Spare

12. Load Curve

13. Ground Mount System
■ Site Geographical Coordinate (Latitude & Longitude)
■ Topographic Map/ Land Survey Details
■ Tree or any other Shadow Objects (Transmission tower)
■ Site Condition
– Any rocks available ( Which makes MMS Foundation work complicated)
– Land Levelling required or Not ? ( Scope of Land Levelling)
■ Soil Test Report
■ Interfacing Voltage Range (11KV/22KV/33KV)
■ Distance between nearby substation and Plant

15. Example Site Survey

16. Example Site Survey