skate park have to be..... ....powered some other way.

But how?

There's no electricity.

What about....a whole bunch of flashlights?

No way!

We'd need a thousand of 'em.

What about wind power?

We could build a windmill!

Radopolis isn't a very windy place - I don't think we could generate enough power...

There must be something we can do!

The answer's probably right under my own beak.

Ahhh...feels nice and warm in the sun.

That's it!

Are you thinking what I'm thinking?

Solar power!

And I've got just what we need...

I've been meaning to try out this solar panel for months.

What are those thingies?

They're called "photovoltaic cells" - solar cells.

They turn the sunlight that falls onto them into electricity.

So we just lay it on the roof like this?

Not quite.

To get the most energy from sunlight, you have to angle the cells so they face squarely towards the sun.

Now, we just have to plug it in... We have illumination!

I still don't get how the power gets from all the way up there... ...to all the way down here!

Here's the deal.

Sunlight hits the solar panel...the panel absorbs the sunlight ...turns it into electrical energy ...and we can use that electricity to power things - like light bulbs.

But we need lights at night.

And there's no sunlight then!

That's why we need this.

A battery?

A rechargeable one.

It's called a storage battery.

You mean you can store electricity from the solar panel in here and use it later, like at night?

Exactly!

Let's see how long it takes for that solar panel on the roof to charge this battery.

Done!

The battery's fully charged!

And it took only one hour of sunlight from that panel to charge it up.

Awesome.

Solar's definitely the way to go.