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Case study: Pedal powered or solar powered?

We wanted to share with you a case study for a customer with a pretty unique marine application! East Coast BrewBoat is a super fun, 100% green, pedal powered (for the most part!), electric tour boat based in Murrels Inlet, South Carolina.

East Coast BrewBoat

Here's a copy of the email enquiry we received from Charlie:

"Hi, I have a USCG inspected vessel in S.C. that uses a Torqeedo 4.0 motor. I am trying to find a solution to stretch our range and power capacity for our 48Volt system. We are gearing up for our fourth season with the same motor/battery setup and have made it work but most days, just barely. We have a large canopy with plenty of room for panels. Thank you!"

We were pretty excited about this one and the SunPower flexible solar panels are a perfect solution: lightweight, flexible & powerful. For an electric boat, in this case they have a Torqeedo 4.0 Cruise motor, by adding solar you can charge the batteries whilst underway and help extend your range and time on the water, bonus!

After several emails and phone calls to discuss the best layout for the SunPower E-flex solar panels that would a) physically fit and b) provide the right amount of power for their needs they went with 8x170W and 4x110W SunPower E-flex solar panels. This is a total system size of 1,800W (1.8kW) and so for a 48V battery bank is potentially up to around 37amps.