• Exceeds revenue guidance with quarterly revenue of $226 million
• Reports EPS of $0.03 in the first quarter, includes $0.04 net loss on FX remeasurement
• Operating cash flow of $23 million in the  quarter

Camarillo, CA, May 3, 2012 – Power-One, Inc. (NASDAQ: PWER), a leading provider of renewable energy and energy-efficient power conversion and power management solutions, today announced  financial results for the first quarter of 2012.  For the quarter ended April 1, 2012, Power-One recorded net sales of $226 million, with Renewable Energy Solutions contributing $149 million and Power Solutions posting $77 million.  Net income attributable to common stockholders for the first quarter was $5 million, or $0.03 per diluted share.  This includes a loss, net of tax, of $0.04 per share on foreign currency remeasurement due to the recent strengthening of the Euro versus the dollar. 

“In the first quarter of 2012, Power-One was able to exceed its revenue guidance forecast as a result of higher demand for residential and commercial inverters in Europe,” said Richard Thompson, Chief Executive Officer of Power-One. “We anticipate these trends will continue into the second quarter as customers commission PV assets ahead of announced or expected reductions in subsidies.”

“In addition to the upturn in demand in Europe, our new TRIO family of 3-phase inverters is being well received, particularly in Northern Europe,” continued Mr. Thompson. “Further, there is a high degree of interest for our liquid-cooled ULTRA central inverters, which are in beta testing with three large EPC companies and will begin shipping in volume quantities in the second half of 2012.”

Renewable Energy Solutions

In the first quarter of 2012, Renewable Energy (RE) Solutions saw strength from the European region that exceeded its forecast.  Power-One also continues to build its footprint in newer regions, including the United States and Asia Pacific.  Inverter and related products generated sales of $149 million and an operating margin of 13% for the first quarter of 2012. In the quarter, Power-One shipped 672 MW of inverters, up 10% year-over-year.

Power Solutions

Power Solutions recorded sales of $77 million and an operating margin of 9% for the first quarter of 2012, showing continued improvement in margins. In the quarter, revenue was positively impacted by increased demand in the Industrials segment. Power Solutions posted its sixth consecutive quarter of operating profit, which was driven by improved operating efficiencies.

Business Outlook

Due to near-term strength in the photovoltaic market in advance of anticipated reductions in feed-in-tariffs, Power-One expects demand to be stronger and  forecasts revenue of $240 million to $260 million in the second quarter of 2012, a sequential increase of 6% to 15% .

Earnings Conference Call

Power-One will discuss its 2012 first quarter results today at 2:00 p.m. Pacific Time.  The call will be available both via the telephone at (877) 390-5535 or (631) 291-4579, conference ID # 72132591, or over the Internet through the Power-One investor relations web site at http://investor.power-one.com.   To listen to the call, please log-in at least 10 minutes early to register, download, and install any necessary audio software.  For those who cannot listen to the live broadcast, the webcast will be available on the investor relations section of the Power-One web site at http://investor.power-one.com/events.cfm throughout the current quarter. 

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.

Safe Harbor Statement

Statements made in this press release which state the Company's or management's intentions, beliefs, expectations or predictions for the future are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, and may include statements regarding anticipated future productivity. It is important to note that future performance and actual results could differ materially from those discussed in or underlying such forward-looking statements as a result of risks and uncertainties that cannot be predicted or quantified and that are beyond the Company’s control. Important factors that could cause actual results to differ materially include, but are not limited to: economic conditions in general and business conditions in the power supplies and renewable energy markets; foreign exchange rates; the Company’s ability to improve its operational and supply chain efficiencies; competitive factors such as pricing and technology; the timing and results achieved in completing product manufacturing transitions to Company facilities in China or other low-cost locations;  the threat of a prolonged economic slowdown or a lengthy or severe recession; continued volatility of the financial markets, including fluctuations in interest rates and trading prices of the Company's equity securities; the results of pending legal proceedings; the Company’s ability to secure market share in higher margin, high-growth markets; the market growth of product sectors targeted by the Company as sectors of focus; and the Company’s ability to increase working capital.  Additional information concerning factors that could cause actual results to differ materially from expectations expressed in this press release are described  in the Company's reports filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934 from time to time, which  are also available through the Company's Website at www.power-one.com or through the SEC's Electronic Data Gathering and Analysis Retrieval System (EDGAR) at www.sec.gov. Power-One undertakes no obligation to publicly update or revise any forward-looking statement.

CAMARILLO, Calif., 13 de abril de 2012 (GLOBE NEWSWIRE) – Al tiempo que se anunciarán los resultados financieros correspondientes al primer trimestre de 2012 de Power-One, Inc.'s (Nasdaq:PWER), el público está invitado a participar en la teleconferencia (conference call) trimestral de la empresa que se realizará en directo en Internet el jueves 3 de mayo de 2012 a las 2:00 P.M. Hora del Pacífico (GMT -8). El propósito de esta conferencia es analizar los resultados financieros de la empresa correspondientes al primer trimestre de 2012. En ella se contará con la presencia de Richard Thompson, Director Ejecutivo, y de Gary Larsen, Director Financiero.

Los resultados financieros se publicarán en los boletines de noticias tras el cierre de mercado del jueves 3 mayo de 2012. Asimismo, la nota de prensa se publicará en el sitio web corporativo de Power-One. El acceso a la convocatoria estará disponible tanto a través del teléfono en los números (877) 390-5535 o (631) 291-4579, identificador de conferencia # 72132591, como en Internet a través del sitio web de atención al inversor de Power-One en http://investor.power-one.com/events.cfm.  Para asistir a la convocatoria, le rogamos que se conecte al menos 10 minutos antes del comienzo de la misma para registrar, descargar e instalar todo el software de audio necesario. Asimismo, le comunicamos que podrá acceder a una grabación de la conferencia en el sitio web de la empresa.

Información acerca de la Conference Call del primer trimestre de 2012 de Power-One

Fecha: Jueves, 3 mayo de 2012   
Hora: Hora del Pacífico: 2:00 PM / Hora del este: 5:00 PM
Acceso: Disponible en la web en www.Power-One.com

Acerca de Power-One

Power-One es el segundo diseñador y fabricante mundial de inversores fotovoltaicos. Sus productos de energías renovables permiten a esta industria el mayor rendimiento en la conversión de energía, en huertos solares y granjas eólicas, tanto a compañías eléctricas como a particulares. Power-One está avalada por 4 décadas de experiencia como líder en productos de suministro eléctrico de alta eficiencia y densidad para diversos sectores, como energías renovables, almacenamiento de datos, conexión de redes y sistemas de alimentación industriales y de red. La empresa tiene su sede central en Camarillo, California (EE.UU.), y cuenta con delegaciones de ventas, plantas de producción y centros de I+D en Asia, Europa y América. Los títulos de Power-One cotizan en NASDAQ con el símbolo PWER. Encontrará más información acerca de nuestra empresa en www.Power-One.com. El logotipo de Power-One, Inc. está disponible en http://www.globenewswire.com/newsroom/prs/?pkgid=7338

CONTACT:

Kevin Trosian
Vice President, Finance & Investor Relations
Tel.: +1 (805) 383 5888
Email: Investor.Relations@Power-One.com

CAMARILLO, Calif., 13 aprile 2012 (GLOBE NEWSWIRE) – Oltre all'annuncio dei risultati finanziari per il primo trimestre del 2012 di Power-One, Inc (Nasdaq:PWER), i partecipanti sono invitati ad ascoltare la conferenza telefonica trimestrale della società trasmessa via Internet e prevista per martedì 3 maggio 2012 alle ore 14.00 Fuso orario del Pacifico/17.00 Fuso orario della costa orientale degli Stati Uniti. Finalità della conferenza telefonica è discutere i risultati finanziari raggiunti dalla società nel primo trimestre del 2012. Alla conferenza interverranno Richard Thompson, Chief Executive Officer e Gary Larsen, Chief Financial Officer.

I risultati finanziari saranno inviati alle agenzie di stampa martedì 3 maggio 2012 alla chiusura del mercato. Il relativo comunicato stampa sarà inoltre pubblicato sul sito Web societario di Power-One. Per partecipare alla conferenza telefonica, chiamare il numero (877) 390-5535 o (631) 291-4579, ID della conferenza # 72132591, o accedere alla sezione Investor Relations del sito Web di Power-One all'indirizzo http://investor.power-one.com/events.cfm.  Per ascoltare la conferenza telefonica, effettuare l'accesso almeno 10 minuti prima dell'inizio, in modo da registrarsi, eseguire il download e installare il software audio richiesto. Sul sito Web, sarà inoltre pubblicata una registrazione dell'evento.

Informazioni sulla conferenza telefonica di Power-One per il primo trimestre del 2012

Data: martedì 3 maggio 2012  
Ora: 14.00 Fuso orario del Pacifico/17.00 Fuso orario della costa orientale degli Stati Uniti
Accesso: disponibile all'indirizzo www.Power-One.com

Power-One

Power-One è il secondo produttore al mondo di inverter fotovoltaici, le sue soluzioni per il settore delle energie rinnovabili consentono la conversione di potenza più flessibile del settore, da impianti solari a parchi eolici utilizzabili sia a livello commerciale che residenziale. L'azienda vanta un'esperienza di oltre 40 anni come leader nella fornitura di prodotti per la conversione di energia ad alta densità ed efficienza per diversi settori, tra cui energie rinnovabili, storage dei dati e connessione, sistemi energetici industriali e di rete. Power-One ha la propria sede a Camarillo, in California e uffici vendita, impianti di produzione e strutture di eccellenza e sviluppo in Asia, Europa e in America. Power-One è quotata al NASDAQ con il codice PWER. Per ulteriori informazioni sull'azienda, visitare la pagina www.Power-One.com.Il logo di Power-One, Inc. è disponibile all'indirizzo http://www.globenewswire.com/newsroom/prs/?pkgid=7338

CONTATTI:

Kevin Trosian
Vice President, Finance & Investor Relations
Tel.: +1 (805) 383 5888
Email: Investor.Relations@Power-One.com

CAMARILLO, Californie, le 13 avril 2012 (GLOBE NEWSWIRE) – Dans le cadre de l’annonce des résultats financiers de Power-One, Inc. (Nasdaq:PWER) pour le premier trimestre 2012, les membres du public sont invités à assister à la conférence téléphonique trimestrielle de l’entreprise en direct sur Internet, le mardi 3 mai 2012 à 14 : 00, heure du Pacifique / 17 : 00, heure de l’Est. L’objectif de la conférence téléphonique est de discuter des résultats financiers de l’entreprise du premier trimestre 2012. Richard Thompson, Chief Executive Officer, et Gary Larsen, Chief Financial Officer, y participeront.

Les résultats financiers seront publiés sur les fils d’information après la fermeture du marché le jeudi 3 mai 2012. Le communiqué de presse sera également publié sur le site Internet de l’entreprise de Power-One. La conférence sera accessible tant par téléphone au numéro (877) 390-5535 ou (631) 291-4579, identifiant de conférence # 72132591, que sur Internet par le biais du site Web des relations avec les investisseurs de Power-One à l’adresse suivante : http://investor.power-one.com/events.cfm.  Pour pouvoir écouter la conférence, veuillez vous connecter au moins 10 minutes à l’avance afin de vous enregistrer et de télécharger et installer tout logiciel audio nécessaire. Une rediffusion en ligne de la conférence sera par ailleurs disponible sur le site.

Informations sur la conférence téléphonique relative aux résultats de Power-One pour le premier trimestre 2012

Date : Mardi 3 mai 2012   
Heure : 14 heures, heure du Pacifique / 17 heures, heure de l’Est
Accès : Disponible sur Internet à l’adresse suivante : www.Power-One.com

Power-One

Power-One est actuellement le deuxième concepteur et fabricant mondial d'onduleurs photovoltaïques. La société globale offre une gamme complète de produits pour installations photovoltaïques et éoliennes depuis les installations résidentielles de petite taille jusqu’aux grandes installations industrielles. Power-One bénéfice de 40 années d'expérience en tant que leader dans la conversion d’énergie haute performance et forte densité agissant dans une grande variété de secteur comme les énergies renouvelables, le stockage des données et les réseaux ou les systèmes industriels L’entreprise siège à Camarillo en Californie (Etats-Unis) et a plusieurs bureaux sites de production et centres de recherche et de développement dans le monde notamment en Asie, en Europe et en Amérique. L'action de l'entreprise est cotée au NASDAQ sous le sigle PWER. Pour plus d'information sur la société, veuillez consulter la page Web à www.Power-One.com. Le logo Power-One, Inc. est disponible à l’adresse suivante: http://www.globenewswire.com/newsroom/prs/?pkgid=7338

<3>CONTACT :

Kevin Trosian
Vice President, Finance & Investor Relations
Tel.: +1 (805) 383 5888
Email: Investor.Relations@Power-One.com

CAMARILLO, Kalifornien, 13. April 2012 (GLOBE NEWSWIRE) -- Power-One, Inc. (Nasdaq:PWER) lädt die interessierte Öffentlichkeit zur Bekanntgabe seiner Finanzergebnisse des 1. Quartals 2012 ein, die im vierteljährlichen Conference Call des Unternehmens live im Internet am Donnerstag, den 3. Mai 2012 um 23:00 Uhr MESZ (2:00 PM Pacific Time/5:00 PM Eastern Time) verfolgt werden kann. Zweck des Conference Calls ist die Darlegung der Finanzergebnisse des Unternehmens im 1. Quartal 2012. Am Conference Call werden Richard Thompson, Chief Executive Officer, und Gary Larsen, Chief Financial Officer, teilnehmen.

Die Finanzergebnisse werden am Donnerstag, den 3. Mai 2012, nach Schließung der Börsen über die Nachrichtenagenturen bekannt gegeben. Die Pressemitteilung wird außerdem auf der Website von Power-One veröffentlicht. Der Conference Call kann sowohl per Telefon unter (877) 390-5535 oder (631) 291-4579, Konferenz-ID 72132591, als auch über das Internet über die Power-One-Website unter „Investor Relations“ unter http://investor.power-one.com/events.cfm verfolgt werden. Melden Sie sich bitte mindestens 10 Minuten zuvor für den Conference Call an, um sich zu registrieren und die erforderliche Audio-Software herunterzuladen und zu installieren.  Auf der Website wird auch ein Online-Re-Broadcast des Conference Calls bereitgestellt werden.

Info zum Conference Call von Power-One zu den Finanzergebnissen des 1. Quartals 2012

Datum: Donnerstag, 3. Mai 2012   
Uhrzeit: 23:00 Uhr MESZ (2:00 PM Pacific Time/5:00 PM Eastern Time
Zugang: Verfügbar über das Internet unter www.Power-One.com
 

Über Power-One

Power-One ist ein führender Hersteller energieeffizienter Lösungen für Leistungsumwandlung und Energiemanagement. Der weltweit zweitgrößte Entwickler und Hersteller von Photovoltaik-Wechselrichtern bietet Produkte für den Bereich Erneuerbare Energien mit branchenführenden Wirkungsgraden bei der Energieumwandlung für Solaranlagen von Energieversorgern, kommerziellen Unternehmen oder Privatkunden an. Power-One verfügt über eine 40-jährige Geschichte als führender Anbieter effizienter Produkte zur Stromversorgung für verschiedene Branchen. Dazu gehören Lösungen für Erneuerbare Energien ebenso Server-, Datenspeicher und Netzwerke sowie Industrieanwendungen und kundenspezifische Lösungen. Das in Camarillo, Kalifornien, ansässige Unternehmen hat Vertriebsniederlassungen, Fertigungsstätten und Forschungs- und Entwicklungszentren in Asien, Europa, Nord- und Südamerika. Power-One ist am amerikanischen NASDAQ unter der Bezeichnung PWER notiert. Weitere Informationen finden Sie unter: www.power-one.com. Das Power-One, Inc. Logo ist unter http://www.globenewswire.com/newsroom/prs/?pkgid=7338 verfügbar.
 

KONTAKT:

Kevin Trosian
Vice President, Finance and Investor Relations'
Tel.: +1 (805) 383 5888
E-Mail: Investor.Relations@Power-One.com   

Vice President, Finance & Investor Relations
Tel.: +1 (805) 383 5888
Email: Investor.Relations@Power-One.com

Power-One Invites Public to Listen to Conference Call on the Web

CAMARILLO, Calif., April 13, 2012 (GLOBE NEWSWIRE) -- In conjunction with Power-One, Inc.'s (Nasdaq:PWER) 2012 first quarter financial results announcement, members of the public are invited to listen to the company's live quarterly conference call on the internet on Thursday, May 3, 2012 at 2:00 p.m. Pacific Time / 5:00 p.m. Eastern Time. The purpose of the conference call is to discuss the company's 2012 first quarter financial results. 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, May 3, 2012. The press release will also be posted on Power-One's corporate web site. The call will be available both via the telephone at (877) 390-5535 or (631) 291-4579, conference ID # 72132591, or over the Internet through the Power-One investor relations Web site at http://investor.power-one.com/events.cfm.  To listen to the call, please log-in at least 10 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.

Power-One's 2012 First Quarter Conference Call Info

Date: Thursday, May 3, 2012   
Time: 2:00 PM Pacific Time / 5:00 PM Eastern Time
Access: Available on the web at www.Power-One.com

About Power-One

Power-One 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 both solar arrays and wind farms for use by utilities 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, data storage and 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 about the Company, please visit www.Power-One.com.

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

CONTACT: Kevin Trosian
Vice President, Finance & Investor Relations
Tel.: +1 (805) 383 5888
Email: Investor.Relations@Power-One.com

• Exceeds revenue guidance with quarterly revenue of $267 million and 2011 full-year revenue of $1.02 billion
• Reports EPS of $0.21 in the fourth quarter 2011
• Renewable Energy sales outside of Europe grew to 25%
• Generated $48 million of operating cash flow in fourth quarter

Camarillo, CA, February 2, 2012 – Power-One, Inc. (NASDAQ: PWER), a leading provider of renewable energy and energy-efficient power conversion and power management solutions, today announced strong financial results for the fourth quarter 2011.  For the quarter ended January 1, 2012, Power-One recorded net sales of $267 million, with Renewable Energy Solutions contributing $191 million and Power Solutions posting $76 million.  Net income attributable to common stockholders for the fourth quarter was $32 million, or $0.21 per diluted share. 

“In 2011, Power-One again recorded over $1 billion in sales, highlighting our ability to execute and generate profits in difficult operating environments,” said Richard Thompson, Chief Executive Officer of Power-One. “Both SBUs performed well in the fourth quarter, as Power-One generated $48 million of operating cash flow in the quarter and finished the year with over $200 million in cash. Further, during the quarter, Power-One shipped 829 MW of inverters, bringing the 2011 total to 2.9 GW, versus 2.6 GW in 2010.”

“Power-One continues to expand in high growth solar markets, such as India and the United States,” continued Mr. Thompson.  “As we move forward in 2012, look for Power-One to provide innovative new products to meet our customers’ demands for better yields, higher uptimes and greater control of their PV assets.”

Renewable Energy Solutions

 In the fourth quarter of 2011, Renewable Energy (RE) Solutions increased its penetration of North America and Asia-Pacific.  These regions increased to 25% of RE revenue versus 17% in the third quarter.  Inverter and related products generated sales of $191 million for the fourth quarter 2011, with a greater percentage of full-year 2011 sales achieved in the utility market, reflecting the current global trend of increasing ground mount and large-scale installations versus roof-top. 

Power Solutions

Power Solutions recorded sales of $76 million in the fourth quarter 2011 and an operating margin of 5%.   In the quarter, revenue was positively impacted in the Servers, Storage and Networking market, with  Power Solutions’ posting its fifth consecutive quarter of operating profit.  This was driven by increased volume over the prior quarter and improved operating efficiencies.

Business Outlook

Due to uncertainty on feed-in-tariffs and other legislation, as well as the global macroeconomic uncertainty affecting end market demand in both SBUs, Power-One is not providing full-year guidance for 2012.   For the first quarter of 2012, Power-One forecasts revenue of $190 million to $210 million, reflecting traditional seasonality in the first quarter.

Earnings Conference Call

Power-One will discuss its 2011 fourth quarter results today at 2:00 p.m. Pacific Time.  The call will be available both via the telephone at (877) 390-5535 or (631) 291-4579, conference ID # 42980217, or over the Internet through the Power-One investor relations Web site at http://investor.power-one.com.   To listen to the call, please log-in at least 10 minutes early to register, download, and install any necessary audio software.  For those who cannot listen to the live broadcast, the webcast will be available on the investor relations section of the Power-One’s web site at http://investor.power-one.com throughout the current quarter. 

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

Safe Harbor Statement

Statements made in this press release which state the Company's or management's intentions, beliefs, expectations or predictions for the future are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, and may include statements regarding anticipated future productivity. It is important to note that future performance and actual results could differ materially from those discussed in or underlying such forward-looking statements as a result of risks and uncertainties that cannot be predicted or quantified and that are beyond the Company’s control. Important factors that could cause actual results to differ materially include, but are not limited to: economic conditions in general and business conditions in the power supplies and renewable energy markets; foreign exchange rates; the Company’s ability to improve its operational and supply chain efficiencies; competitive factors such as pricing and technology; the timing and results achieved in completing product manufacturing transitions to Company facilities in China or other low-cost locations;  the threat of a prolonged economic slowdown or a lengthy or severe recession; continued volatility of the financial markets, including fluctuations in interest rates and trading prices of the Company's equity securities; the results of pending legal proceedings; the Company’s ability to secure market share in higher margin, high-growth markets; the market growth of product sectors targeted by the Company as sectors of focus; and the Company’s ability to increase working capital.  Additional information concerning factors that could cause actual results to differ materially from expectations expressed in this press release are described  in the Company's reports filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934 from time to time, which  are also available through the Company's Website at www.power-one.com or through the SEC's Electronic Data Gathering and Analysis Retrieval System (EDGAR) at www.sec.gov. Power-One undertakes no obligation to publicly update or revise any forward-looking statement.

Power-One Invites Public to Listen to Conference Call on the Web

CAMARILLO, CALIFORNIA – January 11, 2012 -- In conjunction with Power-One, Inc.'s (NASDAQ:PWER) 2011 fourth quarter financial results announcement, members of the public are invited to listen to the company's live quarterly conference call on the internet on Thursday, February 2, 2012 at 2:00 p.m. Pacific Time / 5:00 p.m. Eastern Time. The purpose of the conference call is to discuss the company's 2011 fourth quarter financial results. 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, February 2, 2012. The press release will also be posted on Power-One's corporate web site. Investors who would like to listen to the live conference call may go to the investor relations section at http://investor.power-one.com/events.cfm. An online re-broadcast of the call will also be available on the site.

Power-One's 2011 Fourth Quarter Conference Call Info

Date:               Thursday, February 2, 2012

Time:               2:00 PM Pacific Time / 5:00 PM Eastern Time

Access:            Available on the web at www.Power-One.com

About Power-One
Power-One 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 both solar arrays and wind farms for use by utilities 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, data storage and 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 about the Company, please visit www.Power-One.com.

Contact:
Kevin Trosian
Vice President, Finance & Investor Relations
Tel.: +1 (805) 383 5888
Email: Investor.Relations@Power-One.com

Silver Lake Sumeru, the Sole Holder of the Notes Intends to Convert the Notes

Camarillo, CA – October 27, 2011 – On October 25, 2011, Power-One, Inc. (Nasdaq: PWER), a leading provider of renewable energy and energy-efficient power conversion and power management solutions, issued a notice of redemption to the registered holders of its 6.0%/8.0%/10.0% Convertible Senior Notes due May 8, 2019 (the "Notes"), calling for the redemption of all outstanding Notes on November 23, 2011.  The indenture governing the Notes provides that they will be redeemed at a price of 100% of the principal amount of the Notes, and that the holders of the Notes may convert them into shares of the Company’s common stock or into shares of non-voting Series C Junior Participating Convertible Preferred Stock (the “Junior Preferred Stock”) in lieu of the cash redemption price.  Silver Lake Sumeru (“Sumeru”), the holder of the Notes, has advised Power-One that it intends to convert them after the November 8, 2011 interest payment date into 36,375 shares of the Junior Preferred Stock which will be convertible into 26,944,444 shares of common stock.

Power-One also issued a notice of automatic conversion to Sumeru, the registered holder of its outstanding Series A Convertible Preferred Stock (the “Series A Preferred Stock”).  Pursuant to the terms of the certificate of designation governing the Series A Preferred Stock, all Series A Preferred Stock outstanding on November 8, 2011 will be converted into the Company’s common stock, representing 17,500,000 shares of the Company’s common stock on the conversion date.

Under terms of the Junior Preferred Stock, Sumeru is prohibited, subject to certain limited exceptions, from converting the shares of Junior Preferred Stock into common stock if such conversion would result in Sumeru owning more than 19.9% of the outstanding common stock.  

By calling the securities for redemption, Power-One will save $6 million per year in interest and dividend payments.  Sumeru has not requested a shelf registration at this time.

“Power-One’s ability to call the Silver Lake Sumeru Notes and Series A Preferred Stock highlights the transition of the company from a restructuring mode when we took the investment in 2009 to an industry leading company generating strong cash flow,” said Richard Thompson, Chief Executive Officer of Power-One.  “We look forward to the continued involvement of Sumeru as members of our Board of Directors and shareholders of the Company.”

This press release does not constitute a notice of redemption under the indenture covering the Notes, nor does it constitute a notice of automatic conversion under the certificate of designation governing the Series A Convertible Preferred Stock and is qualified in its entirety by reference to the notice of redemption issued by the Company and the notice of automatic conversion.

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.

About Silver Lake Sumeru

Silver Lake Sumeru is the middle market strategy of Silver Lake, the world's largest private investment firm focused on technology and technology-enabled industries. The Silver Lake Sumeru team applies fundamental operating insight, deep technology sector expertise, and world-class investing skills to acquire and manage sector-leading middle market technology companies such as AVI-SPL, Mobile Messenger, Power-One, and Spansion. Silver Lake also has the leading market position in large cap technology investments. Silver Lake's portfolio includes or has included technology industry leaders such as Ameritrade, Avago, Avaya, Business Objects, Flextronics, Gartner, GersonLehrman Group, Instinet, Intelsat, IPC Systems, MCI, the NASDAQ OMX Group, NetScout, NXP, Sabre, Seagate Technology, Serena Software, Skype, SunGard Data Systems, Thomson and UGS. For more information, please visit www.silverlake.com.

• Quarterly revenue reaches $245 million; Shipped 740 MW of inverters
• Posts third quarter operating income of $34 million; GAAP Net Income of $41 million
• Increases global market share and expands in new markets

Camarillo, CA, October 27, 2011 – Power-One, Inc. (NASDAQ: PWER), a leading provider of renewable energy and energy-efficient power conversion and power management solutions, today announced financial results for the third quarter 2011.  For the quarter ended October 2, 2011, Power-One recorded net sales of $245 million, with Renewable Energy Solutions contributing $174 million and Power Solutions posting $71 million.  Net income attributable to common stockholders for the third quarter was $40.6 million, or $0.27 per diluted share.  Included in third quarter results was income of $16.9 million, or $0.11 per diluted share, related to the release of cumulative translation adjustments upon the liquidation of a foreign subsidiary.

“Power-One gained significant customer wins in the third quarter, as we expanded revenue in high growth solar markets, such as India and other regions in Asia ,” said Richard Thompson, Chief Executive Officer of Power-One. “Despite difficult global macroeconomic conditions that impacted both SBUs, we generated $59 million of operating cash flow and ended the quarter with $183 million of cash and cash equivalents”

Renewable Energy Solutions

In the third quarter of 2011, Renewable Energy Solutions increased penetration of Asia-Pacific, particularly with sales to India.  Inverter and related products generated sales of $174 million for the third quarter 2011. During the quarter, Power-One shipped 740 MW of inverters, bringing the 2011 year-to-date total to 2.1 gigawatts, versus 1.7 gigawatts during the same period in 2010. 

Power Solutions

Power Solutions recorded sales of $71 million in the third quarter 2011.  In the quarter, revenue was negatively impacted by slower demand in the Network Power Systems and Servers, Storage and Networking markets.  During the third quarter, Power Solutions’ posted its fourth consecutive quarter of operating profit.  This was driven by improved operating efficiencies.

Business Outlook

Global macroeconomic uncertainty continues to influence end market demand in both SBUs.   For the fourth quarter of 2011, Power-One forecasts revenue of $220 million to $250 million.   

Earnings Conference Call

Power-One will discuss its 2011 third quarter results today at 2:00 p.m. Pacific Time.  The call will be available both via the telephone at (877) 390-5535 or (631) 291-4579, conference ID # 18232823, or over the Internet through the Power-One investor relations Web site at http://investor.power-one.com.   To listen to the call, please log-in at least 10 minutes early to register, download, and install any necessary audio software.  For those who cannot listen to the live broadcast, the webcast will be available on the investor relations section of the Power-One’s web site at http://investor.power-one.com throughout the current quarter. 

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.

Safe Harbor Statement

Statements made in this press release which state the Company's or management's intentions, beliefs, expectations or predictions for the future are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, and may include statements regarding anticipated future productivity. It is important to note that future performance and actual results could differ materially from those discussed in or underlying such forward-looking statements as a result of risks and uncertainties that cannot be predicted or quantified and that are beyond the Company’s control. Important factors that could cause actual results to differ materially include, but are not limited to: economic conditions in general and business conditions in the power supplies and renewable energy markets; foreign exchange rates; the Company’s ability to improve its operational and supply chain efficiencies; competitive factors such as pricing and technology; the timing and results achieved in completing product manufacturing transitions to Company facilities in China or other low-cost locations;  the threat of a prolonged economic slowdown or a lengthy or severe recession; continued volatility of the financial markets, including fluctuations in interest rates and trading prices of the Company's equity securities; the results of pending legal proceedings; the Company’s ability to secure market share in higher margin, high-growth markets; the market growth of product sectors targeted by the Company as sectors of focus; and the Company’s ability to increase working capital.  Additional information concerning factors that could cause actual results to differ materially from expectations expressed in this press release are described  in the Company's reports filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934 from time to time, which  are also available through the Company's Website at www.power-one.com or through the SEC's Electronic Data Gathering and Analysis Retrieval System (EDGAR) at www.sec.gov. Power-One undertakes no obligation to publicly update or revise any forward-looking statement.