EXHIBIT 99.1

FORM 51-102F3

MATERIAL CHANGE REPORT

1. Name and Address of Company

Ballard Power Systems Inc.

9000 Glenlyon Parkway

Burnaby, British Columbia

V5J 5J8

2. Date of Material Change

March 21, 2013.

3. News Release

The news release attached as Schedule "A" hereto was disseminated on March 21, 2013 through Canada Newswire.

4. Summary of Material Change

Ballard Power Systems Inc. ("Ballard") announced a public offering (the "Offering") in the U.S. of 7,275,000 units ("Units") at a price of US$1.10 per unit for gross proceeds of approximately US$8,000,000. Each Unit entitles the holder to one common share and one warrant (a "Warrant") to purchase one common share of the company. The Warrants are exercisable immediately upon issuance for a period of five years at an exercise price of US$1.50 per share.  Ballard has granted the underwriter a 30-day option to purchase an additional 1,091,250 Units on the same terms and conditions solely to cover over-allotments.  On March 20, 2013, Ballard entered into an underwriting agreement with Lazard Capital Markets LLC to sell the Units.

5.1 Full Description of Material Change

For full details see a copy of Ballard's news release dated March 21, 2013 attached as Schedule "A" hereto.

5.2 Disclosure for Restructuring Transactions

Not Applicable.

6. Reliance on subseciton 7.1(2) of National Instrument 51-102

This report is not being filed on a confidential basis.

7. Omitted Information

Not applicable.

8. Executive Officer

Kerry Hillier, Corporate Secretary

Telephone: (604) 454-0900

kerry.hillier@ballard.com

9. Date of Report

March 25, 2013.

Schedule A

Please see attached.