Final answer:
Wind power's role in electricity production in Spain expanded notably during the Francoist regime, emphasizing self-sufficiency and incorporating hydropower.
Explanation:
Wind power for electricity production began to gain significance in Spain during the years of the Francoist regime (1939–1975) due to the emphasis on self-sufficiency. The country's energy sector notably incorporated hydropower during this period as part of its domestic infrastructure development. However, significant utilization of wind energy for electricity production in Spain occurred more prominently in later years.
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