Solar energy is growing quickly. Very quickly.
Consider that the United States had less than 200 megawatts of installed solar power capacity at the end of 2009, but has added at least that much in seven of the first nine months of 2019. The nation ended September with 32,000 megawatts of installed solar power capacity from utility-scale infrastructure, and an additional 15,000 megawatts or so of small-scale (mostly rooftop) solar installations. Together, they'll combine to generate about 3% of the country's total electricity this year.
That's impressive, but it's barely scratching the surface of solar energy's potential. The United States could soon be building 18,000 megawatts of utility-scale solar per year. That long-term growth potential makes Enphase Energy (NASDAQ: ENPH) and SolarEdge Technologies (NASDAQ: SEDG) solid growth stocks to buy in December, despite concerns over premium valuations or short-seller reports. Here's why.