Solar PV Output Calculator

If you’d like to work out the estimated annual output of your solar PV system, then we’ve devised a handy little calculator to help give you a better idea of just how much money you’ll be able to save each year.

This calculation is based on the Standard Assessment Procedure (SAP), the Government’s official calculation methodology.

The first step is to calculate how many solar panels you need, and you can do this by answering the following questions:

Step #1

1. Type of roof

b. semi-detached

2. Roof dimensions

Length of bottom of roof
meters

Length of top of roof
meters

Distance from eaves to ridge
meters

1. Type of Solar Panel

Talesun TP660M

UE Solar ZHM 230P

Step #2

System Size (kWp)

Tilt (degrees)

Orientation

Level of Overshadowing

Will Panels be Fitted

a. an existing building

b. a new building

Your Electricity Tariff

Pence (if in doubt select 13p)

At home during the day?

Yes

No

Estimated System Performance

Annual Output

Current Feed-In Tariff

Annual FIT earnings

Savings on Electricity Bill

Export Tariff

Total Annual Savings

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