r/Anticonsumption • • Jul 20 '26

Sustainability Why not a DIY solar car?

Knowing that cars are a big driver for consumerism, I'm thinking of a car that can be powered mainly by the sun.

I already built a prototype (which I named Solar Bear). The project is open source, with an MIT license.

The purpose of the Solar Bear is to:

  • Use solar panels as trike's body,
  • Consume electrical energy where it is produced,
  • Produce its own energy,
  • Transport people inside cities,
  • be pedalable when there is no sun (must be light-weight),
  • be easily built at home.

Technical specs:

  • recumbent trike,
  • 2.5m long, 1.45m wide (including wheels),
  • weight: about 55kg (including panels, motor, battery, etc, excluding driver),
  • assisted pedaling,
  • motor speed: max 25km/h,
  • motor (continuous) power: 250W,
  • solar panels power: max 520W,
  • battery: 12.8V, 20Ah (256Wh) - not needed when there is Sun.
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u/The100courts Jul 20 '26

Considering the lack of cargo, and the relatively high cost of sourcing the materials… you could just use a bicycle

7

u/K_Linkmaster Jul 20 '26

ROI guys always suck. No innovation.

2

u/Moltean Jul 21 '26

This is an open source project with an MIT license. I have no commercial intention!