Rooftop Solar PV Pre-feasibility Tool

1) User Details

Company Name :



Enter your name :

Enter your location* :


Your latitude/longitude* :

Roof Area* :

m2

Shadowfree Area %* :

5%
100%
%

Percentage of area to be utilized %* :

5%
100%
%

Module Tilt* :

90°

Module Orientation* :

N
N

Distance of roof from the point of interconnection/LT panel * :

m

Type of installation* :

Operation mode* :

Ratio of energy used between 8 AM to 6PM from grid* :

0
1

Energy Consumptions from Grid:

kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh

Energy Consumption from Gas / Diesel generator sets:

kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh
kWh

Ratio of energy used between 8 AM to 6PM from Gas / Diesel generator sets
* :

0
1

Maximum capacity factor (for sizing PV)* :

Sanctioned Load * :

kW

Limiting factor on Solar PV capacity as a percentage of Sanctioned load* :

%

Electricity Tariffs:

USD/kWh
USD/kWh
USD/kWh
USD/kWh

Debt component* :

%

Subsidy* :

%

Capex* :

USD/kWp

Opex* :

USD/kWp

System Losses

Array soiling losses
%
IAM factor on global
%
PV efficiency loss due to irradiance level
%
PV efficiency loss due to temperature
%
Module array mismatch loss
%
Ohmic wiring loss (at STC)
%
Inverter loss during operation
%
Auxiliary consumption
%
System unavailability
%
Grid unavailability
%
AC Ohmic losses
%
Transformer losses(LV/MV, MV/HV)
%
LID
%
First year degradation
%
%

Module Specifications

Wp
m2
m2

Rated Capacity

kW

Battery

Days
%
%
Volts

Financial

USD/Ah
USD/kVA
%
year
years
%
%
%
%
USD/W
years
%
%
%
%
%
USD
%
%
%

0 kWp
Project Capacity
0 kWp
Annual Electricity Generation (kWh)
0 %
CUF
0 USD
CAPEX
0 USD
OPEX
0 USD/kWh
Levelised Cost of Electricity (LCOE)
0 %
Internal Rate of Return (IRR)
0 Tonne CO2 eq.
Reduction in Green House Gas(GHG) emissions
0USD
Certified Emission Reduction (CER) savings
0%
Performance ratio of the rooftop solar PV system

Rooftop Solar PV System Details

Rooftop Solar PV potential (based on roof area)
kWp
Rooftop solar PV capacity based on roof area and average electricity demand
kWp
Electricity generation based on roof area
kWh/year
Capacity Unitlization Factor(CUF) from PV potential
%
Maximum electricity generation from solar pv based on roof top area and average electricity demand
kWh/year
Maximum CUF possible
%
Actual electricity consumption from solar PV
kWh/year
Excess electricity that can be generated from PV
kWh/year
Electricity export to the grid
kWh/year
CUF actual (based on electricity demand)
%
Annual average Solar irradiation (GHI)
kWh/m2/day
No of module
Total roof area utilized
m2
Inverter rating
kVA
Battery rating
kVA
Electricity from
Electricity from Grid
% electricity from PV
%
% electricity from
%
% electricity from Grid
%
Electricity Production Reduction from
kWh
Electricity Production Reduction from Grid
kWh
GHG emissions from Diesel 0.7 kg CO2 eq./kWh
GHG emissions from Grid 0.56 kg CO2 eq./kWh
GHG emissions from gas 0.42 kg CO2 eq./kWh

High Level Bill of Materials

Unit size Quantity Units Other details
PV Modules
Wp
Inverters
kW
Structures
Structures
kg Hot dip galvanized MS
Mid Clamps
kg Aluminium profile
End Clamps
kg Aluminium profile
J Bolts
kg MS
Fastners
kg Stainless Steel SS304
Cables
DC cables
m Tinned copper, 6mm2
AC cables
m Copper, 10mm2
Junction boxes
ACDB
number
DCDB
numbers
Accessories
MC4 Connectors
pairs
PVC Conduits
m
Disclaimer
This tool is designed to provide an estimate based on indicative calculations for comparative purposes only and is based on the information you have provided as input, including those in the ‘Advanced Options’ which may not be correct for your personal situation. Additionally, results may vary depending on factors such as your specific needs, location, installation cost, and other variables, which may not have been accounted for in the tool. You are advised to get a detailed assessment before undertaking actual installation or any related work/services.
We provide no warranty, express or implied, as to the accuracy, reliability, and completeness of any information, methodology or output provided through the use of this tool. Our employees, independent contractors, agents, consultants, advisors, and other representatives, are not liable and accept no liability for any direct, indirect, consequential or incidental loss or damage which may result from your use of or inability to use our tool, website, and any information contained on it or linked to it. This tool uses weather data as available from National Renewable Energy Laboratory, USA. Their disclaimer available at https://www.nrel.gov/disclaimer.html applies here as well.