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SatCon Technology Reports Quarterly Results for the Second Quarter Ended April 1, 2006; Company Announces Completion of 100kW Solar Inverter for the European Market and Sale of First Unit

BOSTON--May 1, 20061, 2006--SatCon Technology Corporation(R) , a developer and manufacturer of power electronic products for the alternative energy markets, today announced its operating results for the second quarter ended April 1, 2006. Revenue showed modest growth over the first quarter of fiscal 2006 and backlog remains strong and growing at $25.1 million versus $21.5 million for the same period in fiscal 2005. Net loss for the quarter was $3.2 million, or $0.08 per share, compared with a net loss of $2.4 million, or $0.07 per share, for the same period in fiscal 2005. Net loss for the six months year-to-date was $4.5 million, or $0.12 per share, compared with a net loss of $3.8 million, or $0.12 per share, for the same period in fiscal 2005.

"I am pleased with the progress we are making towards transitioning into a products-oriented business," commented David Eisenhaure, Chairman and Chief Executive Officer. "I am also encouraged by the market reception for our alternative energy products. Our commercial grade solar inverters continue to gain market traction and represent approximately 15 percent of our total corporate revenues for the year-to-date, compared with 10 percent in the prior year."

Revenue for quarter ended April 1, 2006 was $7.6 million, compared with $8.3 million for the quarter ended April 2, 2005. Revenue for six months ended April 1, 2006 was $14.7 million, compared with $17.5 million for the comparable period ended April 2, 2005.

Operating loss for the quarter ended April 1, 2006 was approximately $3.2 million, compared with $2.1 million operating loss recorded in the quarter ended April 2, 2005. Operating loss for the six months ended April 1, 2006 was approximately $4.5 million, compared with $3.3 million operating loss recorded for the six months ended April 2, 2005. On a year-to-date basis, approximately $1.2 million has been invested in new market and product initiatives, which are expected to drive incremental revenue growth over the upcoming quarters.

"The steps we have taken to align our organization with our product and market initiatives will bring clarity and focus to our business," said David Eisenhaure. "The recent addition of Clemens van Zeyl, an industry veteran, as President of our Power Systems division focused on the Alternative Energy markets is significant and underscores the importance of this emerging market opportunity for SatCon. We are excited about the prospects for revenue growth in this division. In addition, given our strong portfolio of products, technologies and experience in vehicular applications, I am particularly encouraged by the recent traction that HEV and alternative fuel vehicles are achieving in the market and feel that the time is right for us to re-dedicate ourselves to these markets."

The previously stated milestones and a status update follow:

-- December 2005: Focus on SatCon core business by selling the Ling Shaker product line. Done.

-- March 2006: Qualify a 500 kW solar photo-voltaic power control unit product for the California Energy Commission listing. Done.

-- March 2006: Secure development projects for the U.S. Army's Future Combat System applications. Done

-- June 2006: Book orders for production quantities of HEV motors and converters. Done

-- June 2006: Book an order for a megawatt stationary fuel cell power control unit. Deferred to September 2006

-- June 2006: Introduce a new design for a Powergate solar photovoltaic inverter in the power range of 100 kW for the European photo-voltaic market. Done

-- June 2006: Introduce for 2006 delivery a high reliability standard product line of 1 Amp to 5 Amp Class K Low Drop Out Voltage Regulators used in power supplies for space flight and satellite applications. On Track

-- September 2006: Develop new high-temperature packaging technology for Silicon Carbide power devices. On Track

-- September 2006: Introduce the PowerPac line of industry leading 15W to 30W non-isolated DC to DC converters for the emerging high reliability distributed power markets. On Track

Commenting on the outlook for SatCon for the remainder of the year, Mr. Eisenhaure said, "Taking into consideration the record level of orders on hand combined with active quotes and supply agreements, we are expecting to show improvement in revenues in the second half of fiscal 2006. We are on track with the achievement of our 2006 milestones and I am particularly excited to be entering the European market with our newest product, our 100 kW inverter targeted at the large and rapidly growing European solar market. The organizational changes we have made are designed to expand our presence in our target markets and accommodate a rationalization of our facilities - both of which are expected to contribute to improved financial results. "

About SatCon Technology Corporation

SatCon Technology Corporation is a developer and manufacturer of electronics and motors for the Alternative Energy, Hybrid-Electric Vehicle, Grid Support, High Reliability Electronics and Advanced Power Technology markets. For further information, please visit the SatCon website at www.satcon.com.

Statements made in this document that are not historical facts or which apply prospectively are forward-looking statements that involve risks and uncertainties. These forward-looking statements are identified by the use of terms and phrases such as "believes," "expects," "plans," "anticipates" and similar expressions. Investors should not rely on forward looking statements because they are subject to a variety of risks and uncertainties and other factors that could cause actual results to differ materially from the Company's expectation. There can be no assurance that the company will continue to maintain this level of new orders or that it can successfully deliver the components and systems ordered. Additional information concerning risk factors is contained from time to time in the Company's SEC filings. The Company expressly disclaims any obligation to update the information contained in this release.

                     SATCON TECHNOLOGY CORPORATION
                 CONSOLIDATED STATEMENTS OF OPERATIONS
                              (Unaudited)

                      Three Months Ended         Six Months Ended
                   ------------------------- -------------------------
                    April 1,     April 2,     April 1,     April 2,
                       2006         2005         2006         2005
                   ------------ ------------ ------------ ------------
Revenue:
Product revenue     $6,660,557   $7,131,571  $12,698,586  $15,401,795
Funded research
 and development
 and other revenue     946,281    1,141,757    2,025,333    2,054,622
                   ------------ ------------ ------------ ------------

Total revenue        7,606,838    8,273,328   14,723,919   17,456,417
                   ------------ ------------ ------------ ------------

Operating costs
 and expenses:
Cost of product
 revenue             5,845,145    6,465,842   11,646,978   13,684,541
Research and
 development and
 other revenue
 expenses:
 Funded research
  and development
  and other
  revenue expenses     978,007      946,293    2,089,109    1,693,693
 Unfunded research
  and development
  expenses             560,082       90,188      820,478      135,504
                   ------------ ------------ ------------ ------------

Total research and
 development and
 other revenue
 expenses            1,538,089    1,036,481    2,909,587    1,829,197
Selling, general
 and
 administrative
 expenses            3,359,374    2,799,801    5,847,226    5,321,881
Amortization of
 intangibles           111,671      111,671      223,342      223,342
Gain on sale of
 assets                     --           --   (1,442,915)          --
Restructuring
 costs                      --           --           --     (255,612)
                   ------------ ------------ ------------ ------------

 Total operating
  costs and
  expenses          10,854,279   10,413,795   19,184,218   20,803,349
                   ------------ ------------ ------------ ------------

Operating loss      (3,247,441)  (2,140,467)  (4,460,299)  (3,346,932)
Net unrealized
 gain on warrants
 to purchase
 common stock               --      (28,975)          --       (7,036)
Other income
 (expense)              20,837     (111,366)      16,440     (129,422)
Interest income         95,299        9,287      142,397       11,105
Interest expense      (102,548)     (94,759)    (240,118)    (326,435)
                   ------------ ------------ ------------ ------------
Net loss           $(3,233,853) $(2,366,280) $(4,541,580) $(3,798,720)
                   ============ ============ ============ ============
Net loss per
 weighted average
 share, basic and
 diluted                $(0.08)      $(0.07)      $(0.12)      $(0.12)
                   ============ ============ ============ ============

Weighted average
 number of common
 shares, basic and
 diluted            38,524,241   33,249,055   38,440,108   31,181,906


                     SATCON TECHNOLOGY CORPORATION
                      CONSOLIDATED BALANCE SHEETS

                                             April 1,    September 30,
                                               2006          2005
                                           ------------- -------------
                  ASSETS                    (Unaudited)   (Unaudited)
Current assets:
 Cash and cash equivalents                   $6,805,594    $6,627,352
 Restricted cash and cash equivalents            84,000        84,000
 Accounts receivable, net of allowance of
  $752,047 and $651,463 at April 1, 2006
  and September 30, 2005, respectively        5,254,971     6,473,665
 Unbilled contract costs and fees               132,454       147,938
 Inventory                                    6,441,883     7,017,419
 Prepaid expenses and other current assets      765,574       587,083
                                           ------------- -------------

 Total current assets                       $19,484,476   $20,937,457
Property and equipment, net                   3,227,574     3,662,746
Goodwill, net                                   704,362       704,362
Intangibles, net                              1,605,193     1,867,118
Other long-term assets                          566,934       560,021
                                           ------------- -------------

 Total assets                               $25,588,539   $27,731,704
                                           ============= =============

   LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
 Bank line of credit                         $2,000,000           $--
 Current portion of long-term debt              158,269       167,588
 Accounts payable                             3,251,198     3,363,878
 Accrued payroll and payroll related
  expenses                                    1,622,344     1,563,332
 Other accrued expenses                       1,717,932     2,225,003
 Accrued contract losses                         84,779        84,779
 Deferred revenue                             2,431,142     2,139,434
                                           ------------- -------------

 Total current liabilities                  $11,265,664    $9,544,014
Redeemable convertible Series B preferred
 stock (425 shares issued and outstanding;
 face value $5,000 per share; liquidation
 preference 100%)                             2,125,000     2,125,000
Long-term debt, net of current portion           76,416       143,590
Other long-term liabilities                     333,004       316,844
                                           ------------- -------------
   Total Liabilities                        $13,800,084   $12,129,448

Commitments and contingencies (Note H)

Stockholders' equity:
 Common stock; $0.01 par value,
  100,000,000 and 50,000,000 shares
  authorized at April 1, 2006 and
  September 30, 2005, respectively;
  38,605,662 and 38,283,208 shares issued
  and outstanding at April 1, 2006 and
  September 30, 2005, respectively              386,057       382,832
 Additional paid-in capital                 154,004,731   153,239,276
 Accumulated deficit                       (142,447,680) (137,906,100)
 Accumulated other comprehensive loss          (154,653)     (113,752)
                                           ------------- -------------

 Total stockholders' equity                 $11,788,455   $15,602,256
                                           ------------- -------------

 Total liabilities and stockholders'
  equity                                    $25,588,539   $27,731,704
                                           ============= =============