Power-One Updates Outlook for Fourth Quarter of 2012

Power-One Updates Outlook for Fourth Quarter of 2012

  *Expects revenue of $190 million to $195 million and a net loss for the
    quarter
  *Earnings release date set for January 31st

CAMARILLO, Calif., Jan. 17, 2013 (GLOBE NEWSWIRE) -- Power-One, Inc.
(Nasdaq:PWER), a leading provider of renewable energy and energy-efficient
power conversion and power management solutions, today provided an updated
outlook for its fourth quarter 2012 financial results. The Company expects to
report fourth quarter revenue of $190 million to $195 million, which is below
the previously estimated range of $210 million to $230 million. Softer than
expected market conditions in the Renewable Energy business, primarily in
Italy and Germany, driven by reduced feed-in tariffs and a difficult financing
environment, led to lower sales in the quarter. As a result, the Company
expects to report a net loss of $12 million to $15 million for the quarter due
to lower than expected gross margins resulting from the revenue shortfall and
new product ramp-up costs. Included in the expected results is a loss, net of
tax, of approximately $6 million on foreign currency remeasurement due to the
strengthening of the Euro versus the dollar late in the fourth quarter.

"Greater than anticipated weakness in key European markets was the chief
contributor to revenue being below our expectations," said Richard Thompson,
Chief Executive Officer of Power-One. "We continue to believe that Europe
will be a major market for solar power over the long-term, however, near-term
demand will be more volatile as the market adjusts to the recent changes in PV
incentives."

Power-One will report its fourth quarter 2012 financial results on Thursday,
January 31, 2013. In conjunction with its financial results announcement,
members of the public are invited to listen to the company's live quarterly
conference call on the Internet on Thursday, January 31, 2013 at 2:00 p.m.
Pacific Time/5:00 p.m. Eastern Time. The conference call will feature Richard
Thompson, Chief Executive Officer and Gary Larsen, Chief Financial Officer.

Financial results will be released over the newswires after the market closes
on Thursday, January 31, 2013. The press release will also be posted on
Power-One's corporate website. The call will be available both via the
telephone at (877) 390-5535 or (631) 291-4579, conference ID #88122939, or
over the Internet through the Power-One investor relations website at:
http://investor.power-one.com/events.cfm. To listen to the call, please log-in
at least ten minutes early to register, download, and install any necessary
audio software. An online re-broadcast of the call will also be available on
the site.

About Power-One

Power-One is a leading provider of renewable energy and energy-efficient power
conversion and power management solutions and is the world's second largest
designer and manufacturer of photovoltaic inverters.Its renewable energy
products enable the industry's highest yielding conversion of power from solar
arrays for use by utilities, commercial enterprises and homes.Power-One has a
40 year history as the leader in high efficiency and high density power supply
products for a variety of industries including Renewable Energy, Servers
Storage & Networking, Industrial and Network Power Systems.The company is
headquartered in Camarillo, CA and has global sales offices, manufacturing,
and R&D operations in Asia, Europe, and the Americas. Power-One is traded on
NASDAQ under the ticker symbol PWER. For more information, please visit
www.Power-One.com.

The Power-One, Inc. logo is available at
http://www.globenewswire.com/newsroom/prs/?pkgid=7338

CONTACT: Investor Contact:
        
         Larry Clark
         Investor Relations for Power-One
         Investor.Relations@Power-One.com
         (310) 478-2700 ext. 29

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