Filed Pursuant to Rule 433

Issuer Free Writing Prospectus dated September 25, 2015

Relating to Program Prospectus Supplement dated September 10, 2015 and

Preliminary Prospectus dated October 15, 2014

Registration No. 333-199321

Solar Bonds are debt securities issued by SolarCity. As with any investment, purchasing Solar Bonds involves risk. You must make your own decision about whether and how much to invest in Solar Bonds. SolarCity cannot make any investment recommendations or otherwise provide any investment advice. Solar Bonds are not FDIC-insured. Your earnings and principal are not guaranteed.

SolarCity has filed a registration statement (including a prospectus) with the Securities and Exchange Commission (“SEC”) for offerings to which this information relates. Before you invest, you should read the prospectus in that registration statement and other documents SolarCity has filed with the SEC for more complete information about SolarCity and the offerings. You may obtain these documents for free by visiting EDGAR on the SEC web site at http://www.sec.gov/Archives/edgar/data/1408356/000119312514371976/0001193125-14-371976-index.htm . Alternatively, you may obtain the prospectus relating to the Solar Bonds, and the pricing supplement relating to a particular series of Solar Bonds, on the Solar Bonds platform.

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