Codes of Conduct

CODES OF BUSINESS CONDUCT AND ETHICS:

On April 1, 2013, the Board of Directors of Atlantic Power Corporation (the "Company") approved the separation of the code of ethics specifically applicable to the Chief Executive Officer and senior financial officers of the Company (the "Officer Code of Ethics") from the Code of Business Conduct and Ethics applicable to all Company employees (the "Company Code of Ethics"). The Officer Code of Ethics supplements the Company's existing Company Code of Ethics for the Chief Executive Officer and senior financial officers of the Company. In particular, the issues the Officer Code of Ethics addresses include, among other things, the following: (a) conflicts of interest; (b) full, fair, accurate, timely and understandable disclosure in reports and documents; (c) compliance with laws, rules and accounting standards; (d) reporting of violations of law or the Officer Code of Ethics; (e) confidentiality; (f) sharing and maintenance of knowledge and skills; and (g) promotion of ethical behavior.

Officer Code of Ethics

Company Code of Ethics