UPDATE 1-Panel installer SolarCity files for $200 mln IPO

(Adds details from SEC filing, background)

LOS ANGELES, Oct 5 (Reuters) - Solar panel installer SolarCity Corp filed with U.S. regulators to raise up to $201 million in an initial public offering that could help rekindle investor appetite for cleantech stocks.

Shares of solar panel manufacturers have logged terrible performances in the last two years as plunging panel prices erased profits. But those lower prices have spurred demand for solar systems in the United States, helping companies like San Mateo, California-based SolarCity.

SolarCity has expanded rapidly thanks to a business model that allows residential customers to lease solar panels for their roofs. Rather than paying the large upfront costs required for a solar installation, customers pay a monthly fee.

Companies including Google Inc and U.S. Bancorp

have provided funds to finance SolarCity's projects. Those investors are able to collect a 30 percent federal tax credit for solar energy systems.

SolarCity faces stiff competition in the solar lease arena, however, from startups including SunRun and Sungevity, as well as stalwart solar players such as SunPower Corp .

SolarCity was founded in 2006 by brothers Lyndon and Peter Rive along with their cousin, PayPal co-founder and Tesla Motors

Chief Executive Elon Musk. Lyndon Rive is SolarCity's CEO, Peter Rive is its chief operating officer, and Musk serves as chairman.

In a filing with the Securities and Exchange Commission, SolarCity said it had more than 31,600 solar system customers as of June 30, 2012. That compares with 5,775 on Dec. 31, 2009.

The company's total revenue was $46.6 million in the three months ended June 30, compared with $13 million a year earlier. It said it had an accumulated deficit of $70.3 million as of June 30.

The company plans to list its common stock on the Nasdaq under the symbol "SCTY."

SolarCity hopes it can buck the recent lackluster trend among cleantech IPOs. Enphase Energy , a solar inverter maker that is one of the only cleantech companies to go public this year, closed at $3.65 on Friday after debuting at $6 in March.

Other cleantech companies, including solar thermal company BrightSource Energy and clean energy company Luca Technologies, cancelled IPO plans at the last minute this year.

SolarCity said it might use a part of the proceeds from the offering to expand its current business through acquisitions or investments in other complementary strategic businesses, products or technologies.

It said, however, that reductions in or eliminations of government incentives for solar power could hurt its results and its ability to compete.

In addition, SolarCity said it was notified this month that the Internal Revenue Service is conducting audits of two of its investment funds, including a review of the solar installations that applied for a popular government cash grant program.

"If ... the Internal Revenue Service determines that the valuations were incorrect and that our investment funds received U.S. Treasury grants in excess of the amounts to which they were entitled, we could be subject to tax liabilities, including interest and penalties, and we could be required to make indemnity payments to the fund investors," the company said in the SEC filing.

Goldman Sachs, Credit Suisse Securities and BofA Merrill Lynch are acting as the lead underwriters for the offering.

The amount of money a company says it plans to raise in its first IPO filing is used to calculate registration fees. The final size of the IPO could be different.

SolarCity investors include Draper Fisher Jurvetson, DBL Investors, Mayfield Fund, Shea Ventures and Valor Equity Partners.

(Reporting by Nichola Groom in Los Angeles and Ashutosh Pandey in Bangalore; Editing by Supriya Kurane and Tim Dobbyn)

((ashutosh.pandey@thomsonreuters.com)(within U.S.+1 646 223 8780, outside U.S. +91 80 4135 5805)(Reuters Messaging: ashutosh.pandey.reuters.com@reuters.net))