Spark EnergyInc. on Oct. 7 filed a registration statement on Form S-3 for thepotential sale of up to $510.4 million worth of securities from time to time.

The filing covers the sale of $200 million worth of class Acommon stock, preferred stock, depositary shares and warrants. In addition, theselling stockholders may offer and sell from time to time up to 11,339,563shares of the company's class A common stock, totaling $310.4 million.

Spark Energy intends to use the net proceeds from the saleof securities for general corporate purposes, including repayment orrefinancing of existing indebtedness, financing of capital expenditures andacquisitions and investment in existing and future projects.

The company will not receive any proceeds from the sale ofsecurities by the selling stockholders.