Fourth quarter net income was $667m, or $1.59 a share, from $263m, or 63 cents, a year earlier. Sales increased 13% to $3.86bn.

Quarterly profit surged to $402m from $73m at NextEra Energy Resources, a wholesale power supplier, as its wind farms produced 580,000MWh more in the period due to stronger wind resource than a year earlier. NextEra is the largest wind and solar generator in North America.