Solar panels in parallel

" Mysolarshop gave me excellent advice on what I needed and sent me a charge controller which developed a fault. Without any fuss, a technician identified the problem and sent a replacement straight away. Superb service ! I will definitely be using them again" - Francis Crane, Staffs

Home

Specials

My Basket

Checkout

My Account

Roof mounting solar panel kits

Installing solar panels on the roof?

DIY Solar Panel - PV

Build a diy solar panel from solar cells

We are here to help

Why do we get calls for help from people who bought elsewhere?

We're friendly and helpful
Professionally trained
Always available by phone
Backed by major manufacturers
Qualified service center

Solar panels in parallel

Connecting Solar Panels In Parallel

Diagram of solar panels connected in parallel

The diagram shows two solar PV panels connected in parallel so the voltage is the same. To calculate the power rating for a solar charge controller we need to calculate the current flowing in the circuits. Current is always Power (Watts) divided by voltage (Volts) so in this example solar power system it's 120 / 12 = 10 Amps. The Steca PR1515 is fine for this purpose as it is a 15Amp solar charge controller.

Connecting solar panels in series