You can connect solar cells from cheap LED yard lights to power a CPU fan. It works in bright light. Take a look.
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Gazebo with Solar-Powered LED Lighting

Image by RightBrainPhotography
Here’s a cool use of solar power that makes this gazebo look incredible at night. A central unit stores power and a solar yard light strip goes underneath. It’s topped off with a flickering candle light in a star-shape hanging lamp. Very authentic tin roof that roars in the rain, and underneath, the table is made of slate which is tiled over a welded steel frame. There is a triple-trunk base of a former Cottonwood tree that died in 2005.

What a great use of a tree stump, wouldn’t you say!

Stage 3: More plants and solar lights

Image by zawtowers
The third stage was to get some more pots and plants, and also some solar lights so it’d be nice come dusk or darkness if it was still warm to sit outside.

Here you can see the two solar lights, disguised as rocks in the corner. They light up very nicely.

There’s also some round terracotta pots with a fuchsia in one corner and a lemon smelling conifer in the other. At the front is a nice little plant in the blue pot too, which looks fab.

edger with lights .1

Image by andy_j_crowder
We’re putting in an edger as well to keep the rocks/gravel out of the yard, and the yard out of the gravel. You can also see the new solar powered lights that are being put in.

Read more on BBC News

• Dual-head solar motion-activated security light
• 2 adjustable heads with 4 superbright LEDs each
• Easy installation – no electrician needed
• Light automatically turns on when motion detected
• Can be used for sheds, steps, porches or anywhere light is needed

Product Description
This is one of the brightest solar-powered, motion-activated outdoor security spotlights on the market. Reposition the heads for wide illumination. The LEDs never burn out or need changing. This environmentally friendly unit ensures that you always have bright light without using one bit of electricity, drawing the free power of the sun. This means low energy costs and low environmental impact with an amazing amount of light. Installation is so simple, no electrician needed.

Maxsa Solar Dual Head LED Security Floodlight

• Butterfly and Lily turn colors while the poles stay green.
• Automatic light on/off. 8 hours in the sun = 6 hours light in the evening. 2V/50mA solar panel.
• No wire and A/C electricity needed to run these lights. Self sustained on free solar energy with no maintenance needed.
• 28″ tall for lily flower light, and 24 inches tall for butterfly light. 2 lights in one package.
• 2 LED lights/stake. 1 LED’s color changes to light up the butterfly or lily, 1 stays steady green for poles.

Product Description
These self-sustained solar lights make gorgeous art pieces among flowers in your garden and yard. A beautiful butterfly has quietly landed on a green bamboo stick… while the lily flower changes color… Very unique solar lights, nowhere else you can find but here. New design, limited inventory.

Solar Powered Butterfly AND Lily Garden Lights, 2V/50mA Solar Panel. 500mAh rechargable battery. Two Light Stakes both with Unique Light-up Bamboo-looking poles !!!

Thanks, 10 points best answer!
Oh, and by the way!
I kinda mean using solar power for companies like as a alternative to using coal, not just for your own use at home by setting up your own private solar powered devices!

Thanks!

Read more on ThomasNet

• Installs easily with no wiring
• Provides light in remote areas
• Sun Charges light during the day
• Turns on with Motion
• Bright White halogen bulb included

Product Description
White, Motion Activated Solar Flood Light, Detects Motion In 180&degree., No Wiring Needed, Provides Light In Remote Areas, Sun Charges Light During The Day, Fixture Turns On With Motion At Night, Easy Installation, Mounts Almost Anywhere, Bright Halogen Light Bulb, Included.

Cooper Lighting MSL180W Motion Activated Solar Floodlight