Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of SunEdison, (NASDAQOTH:SUNEQ) jumped more than 10% early Thursday, then settled to close up around 5% after it announced the proposed initial public offering of its yieldco subsidary, TerraForm Power.

So what: TerraForm Power is currently an indirect subsidiary of SunEdison, and will own and operate contracted clean power generation assets acquired from SunEdison and other third parties. As a yieldco, TerraForm will generate revenue from long-term power purchase agreements with utility companies. 

Now what: SunEdison, for its part, still hasn't determined the number of shares to be offered, or the respective price range for the offering. But I think investors are right to applaud the move, which provides an avenue for SunEdison to monetize its assets. At the same time, this allows SunEdison to hone the focus of its core business, while maintaining a buyer for its solar installations.

Steve Symington has no position in any stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.