On April 29th, 2013, Massachusetts Financial Services Company ("MFS") notified EDP that, in accordance with article 20 of the Portuguese Securities Code, it came to hold 73,696,918 ordinary shares of EDP, which corresponds to 2.02% of EDP's share capital and 2.02% of the respective voting rights. The qualified shareholding resulted from the acquisition through NYSE Euronext Lisbon of 696,653 shares on April 24th, 2013.

MFS also informed that the chain of entities relevant for the calculation of the significant shareholding in accordance with number 1 of article 20 of the Portuguese Securities Code is the following:

- Massachusetts Financial Services Company, which holds directly 71,329,123 ordinary shares of EDP, corresponding to 1.95% of EDP's share capital and 1.95% of the respective voting rights;

-  MFS Institutional Advisors, Inc., which holds 3,800 ordinary shares of EDP, corresponding to 0.0001% of EDP's share capital and 0.0001% of the respective voting rights;

-  MFS International Ltd, which holds 733,471 ordinary shares of EDP, corresponding to 0.02% of EDP's share capital and 0.02% of the respective voting rights;

-  MFS International (UK) Ltd, which holds 1,177,148 ordinary shares of EDP, corresponding to 0.03% of EDP's share capital and 0.03% of the respective voting rights;

-  MFS Investment Management K.K., which holds 453,376 ordinary shares of EDP, corresponding to 0.01% of EDP's share capital and 0.01% of the respective voting rights.

EDP – Energias de Portugal, S.A.