The biggest solar story isn’t that it passed coal and wind. It’s what happens next

In May, solar energy production surpassed both coal and wind in the United States for the first time in a single month, according to data released by the U.S. Energy Information Administration. Solar produced 47,147 gigawatt-hours, outpacing coal's output of 45,119 gigawatt-hours. Over the first five months of 2026, utility-scale solar output grew by 21.6 percent compared to the previous year, while coal generation decreased by 10.9 percent.

Experts project that solar, wind, and battery storage will add approximately 83 gigawatts of new capacity by May 2027. Fossil and nuclear power generation are expected to decline by nearly 4.7 gigawatts during the same period. While the focus of this story is often the numerical crossover, the real significance lies in the underlying trend that has been unfolding for over a decade.

This trend, known as Swanson's Law, illustrates how the cost of solar energy has been decreasing at a predictable rate as its production volume doubles. By understanding this pattern, industry leaders can anticipate disruptive changes before they become apparent to competitors. Companies like Google and Meta have recognized this trend early on, entering into long-term renewable energy agreements with TotalEnergies and Enbridge to secure a substantial portion of their electricity needs from solar power.

The growing demand for renewable energy, driven by the need to power data centers and the increasing adoption of artificial intelligence, is accelerating the curve of solar adoption. When these two trends - falling costs and increasing demand - intersect, it creates a powerful force for change. For any industry, identifying the curve that signals potential disruption and acting before it becomes apparent to others can be a crucial strategic advantage.

By tracking the rate of change in a technology's cost or performance over time, and considering the impact of complementary trends, leaders can make informed decisions about when to invest and how to position their organizations for success.