By Giulia Petroni

EDP-Energias de Portugal SA said late Friday that its installed capacity at the end of June was lower than a year ago, and electricity generation fell in the second quarter.

The Portuguese energy company said it had an installed capacity of 26.8 gigawatts at the end of June--74% of which from renewable sources--compared with 27.3GW one year ago. The decline in capacity is due to the deconsolidation of wind portfolios.

"As of end of June, we had 2.0GW of wind and solar projects under construction, twice as much the 1.0GW under construction as of March, reflecting increasing pace of activity," EDP said.

Electricity generated in the second quarter fell to 13.7 terawatt hours from 15.8TWh the previous year. In the first half of the year, the company generated 32TWh.

EDP said total electricity distributed in the first half fell 5.9% on year in the Iberian peninsula and 8.3% in Brazil, as volumes suffered from the coronavirus crisis.

Write to Giulia Petroni at giulia.petroni@wsj.com