UNITED STATES BANKRUPTCY COURT FOR THE DISTRICT OF DELAWARE In re: A123 Systems, Inc., et al., Debtors. Chapter 11 Case No. 12-12859 (KJC) Jointly Administered NOTICE OF HEARING TO CONSIDER APPROVAL OF, AND DEADLINE FOR OBJECTING TO, DEBTORS’ PROPOSED DISCLOSURE STATEMENT TO ALL PARTIES IN INTEREST: PLEASE TAKE NOTICE THAT: 1. A123 Systems, Inc. and certain of its subsidiaries in the above-captioned case (the “Debtors”) have filed with the United States Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”) a proposed Disclosure Statement with Respect to Joint Plan of Liquidation of A123 Systems, Inc., et al. (as it may be amended or modified, the “Disclosure Statement”), along with an accompanying proposed Joint Plan of Liquidation of A123 Systems, Inc., et al. (as it may be amended or modified, the “Plan”). 2. The names of the Debtors and their respective addresses, case numbers, and federal tax identification numbers (EINs) are set forth in the following chart. DEBTOR ADDRESS CASE NO. EIN A123 Systems, Inc. 200 West Street, Suite 300, Waltham, MA 02451 12-12859 04-3583876 A123 Securities Corporation 200 West Street, Suite 300, Waltham, MA 02451 12-12860 42-1655388 Grid Storage Holdings LLC 200 West Street, Suite 300, Waltham, MA 02451 12-12861 N/A 3. A hearing (the “Disclosure Statement Hearing”) will be held before the Honorable Kevin J. Carey, United States Bankruptcy Judge, at the Bankruptcy Court, 824 Market Street, 6th Floor, Wilmington, Delaware 19801, on March 13, 2013 at 10:00 a.m. (Eastern Time) to consider the entry of an order, among other things, finding that the Disclosure Statement contains “adequate information” within the meaning of 11 U.S.C. § 1125, approving the Disclosure Statement and establishing procedures for the solicitation and tabulation of votes to accept or reject the Plan. The Disclosure Statement may be amended or modified at or prior to the Disclosure Statement Hearing, and the Disclosure Statement Hearing may be adjourned from time to time without further notice, except for the announcement of the adjourned date(s) at the Disclosure Statement Hearing or any continued hearing(s). 4. Objections, if any, to the approval of the Disclosure Statement must be in writing and must: (a) state the name and address of the objector or entity proposing a modification to the Disclosure Statement and the amount of its claim or nature of its interest in the Debtors’ chapter 11 cases; (b) specify the basis and nature of any objection and set forth the proposed modification to the Disclosure Statement, together with suggested language; (c) be filed with the Clerk’s Office, 824 N. Market Street, 3rd Floor, Wilmington, Delaware 19801 together with proof of service, on or before 5:00 p.m. (Eastern Time) on March 6, 2013 (the “Objection Deadline”); and (d) be served, so as to be actually received on or before the Objection Deadline, upon (i) the Office of the United States Trustee for the District of Delaware, attn: Mark Kenney, J. Caleb Boggs Federal Building, 844 N. King Street, Suite 2207, Lock Box 35, Wilmington, Delaware 19801 (ii) Latham & Watkins LLP, attn: Annemarie Reilly, 885 Third Ave, New York, New York 10022, (iii) Richards, Layton & Finger, P.A., attn: Mark D. Collins, 920 N. King Street, Wilmington, Delaware 19801, (iv) Brown Rudnick LLP, attn.: William Baldiga, Seven Times Square, New York, New York 10036, (v) Saul Ewing LLP, attn.: Mark Minuti, 222 Delaware Avenue, Suite 1200, P.O. Box 1266, Wilmington, Delaware 19899, and (vi) such other parties as the Bankruptcy Court may order. Docket No. 968 Filed: 2/6/13 2 5. If any objection to the Disclosure Statement is not filed and served as prescribed herein, the objecting party may be barred from objecting to the adequacy of the Disclosure Statement and may not be heard at the Disclosure Statement Hearing. 6. Copies of the Disclosure Statement and Plan may be obtained by parties in interest free of charge on Logan & Company, Inc.’s dedicated webpage related to these cases, available via http://www.loganandco.com, or by contacting Logan & Company, Inc. in writing at 546 Valley Road, Upper Montclair, New Jersey 07043, by telephone at (973) 509- 3190, or by e-mail at a123@loganandco.com. Copies of the Disclosure Statement and Plan are also available for inspection during regular business hours at the Clerk’s Office, 824 N. Market Street, 3rd Floor, Wilmington, Delaware 19801. In addition, copies of the Disclosure Statement and Plan may be viewed at the Court’s website (http://www.deb.uscourts.gov) by following the directions for accessing the ECF system on such website. 7. This notice is not a solicitation of votes to accept or reject the Plan. Votes on the Plan may not be solicited unless and until the proposed Disclosure Statement is approved by an order of the Bankruptcy Court. Following approval of the Disclosure Statement by the Bankruptcy Court, holders of claims against, or interests in, the Debtors will receive a copy of the Disclosure Statement, the Plan and various documents related thereto, or alternatively an approved summary or other notice of the foregoing, unless otherwise ordered by the Bankruptcy Court.