SOLAR FEASIBILITY STUDY

BY PREMKUMAR.E

FOR ROOFTOP AND GROUND MOUNTED PROJECTS

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).

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.

RCC Roof Mounted (Normal) RCC Roof Mounted (Elevated)

Galvalume Sheet Roof Mounted

True South Orientation With Azimuth Angle

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.

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

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)

Sample Client Electrical SLD

LT Panel With Spare Feeder Provision for Spare

Load Curve

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

Example Site Survey

Example Site Survey

THANK YOU