New York (CNN Business) The boom in solar and wind power in the United States will deal a fresh blow to coal country in the next few years.

Renewable energy, led by solar and wind, is projected to be the fastest-growing source of US electricity generation for at least the next two years, according to a report published Friday by the US Energy Department.

Boosted by swiftly falling prices, utility-scale solar power is expected to increase by 10% in 2019 and 17% in 2020, the Energy Information Administration said. Wind power should grow 12% and 14% in those years, vaulting it ahead of hydropower for the first time.

Coal, long the king of the power industry, continues to rapidly decline.

The share of total power generation from coal-fired power plants tumbled to 28% last year, compared with 45% in 2010, according to the EIA. Coal's market share is expected to decline to 24% by 2020. US coal consumption declined by an estimated 4% in 2018 to the lowest level since 1979.

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