A Clean Energy Milestone: Wind and Solar Overtake Coal in the United States

For much of the last century, coal was the backbone of electricity in the United States, powering homes, factories and cities from coast to coast. That long era is now giving way to something new. In 2024, the country crossed a threshold that many experts once thought was still years away, and it happened quietly but decisively.

For the first time on record, wind and solar power together generated more electricity than coal across the United States. This milestone marks a turning point in how the nation produces its energy, and it reflects a shift that has been building steadily for well over a decade. Here is a closer look at the numbers and what they mean.

A Record Year for Wind and Solar

According to a report from the energy think tank Ember, wind and solar produced a record 17 percent of all electricity in the United States in 2024, equal to about 757 terawatt hours. That figure represents an increase of roughly 15 percent compared with the previous year, underscoring just how quickly these sources are expanding across the country.

Coal Falls to a Record Low

As clean energy climbed, coal moved in the opposite direction. Its share of the generation mix fell to an all time low of just under 15 percent, a remarkable decline for a fuel that once dominated American power plants. The crossover between rising renewables and falling coal is what made the historic milestone possible in 2024.

The Numbers Behind the Shift

The details of the change are striking. The year saw the largest ever annual increase in solar generation in the United States, which rose by about 64 terawatt hours. Wind generation grew by around 32 terawatt hours over the same period, while coal generation dropped by roughly 22 terawatt hours, deepening its long term decline even further.

A State by State Transformation

The national picture is really the sum of many local shifts. Since coal generation peaked back in 2007, wind and solar have overtaken it in 24 states, and about half of those made the switch in just the last six years. Illinois was the most recent to cross that line in 2024, joining a growing list of states leaving coal behind.

Where Renewables Lead

In several states the transformation has gone even further, with clean power now on top. In Kansas, Iowa, New Mexico, South Dakota and Colorado, wind and solar combined have become the single largest source of electricity generation. These states show how quickly the balance can tip when renewable resources are abundant and well developed.

Why It Matters for the Climate

This shift carries real significance for the environment. Coal is among the most carbon intensive ways to produce electricity, so replacing it with wind and solar helps cut greenhouse gas emissions and reduces air pollution that affects public health. Every unit of coal power displaced by clean energy is a step toward a lower carbon future.

The Rise of Solar

Solar power in particular has become the fastest growing source of new electricity, driven by steadily falling costs and improving technology. From large utility scale solar farms to panels on rooftops, the sun is playing an ever larger role in the American energy system, and its momentum shows little sign of slowing down anytime soon.

Challenges Ahead

Despite the progress, important challenges remain on the road ahead. Wind and solar do not produce power at a constant rate, so the grid needs more energy storage and better transmission lines to make the most of them. Managing this variability reliably is one of the key tasks facing the energy sector in the years to come.

Looking Forward

The milestone reached in 2024 is unlikely to be a one time event, but rather a sign of the direction in which the country is heading. As costs continue to fall and capacity keeps growing, most analysts expect wind and solar to take on an even larger share of electricity generation in the United States over the coming years.

What was once seen as an ambitious goal has quietly become a reality, and the pace of change is accelerating. The story of American energy is being rewritten, and the moment when wind and solar surpassed coal will likely be remembered as a landmark on the road toward a cleaner and more sustainable power system.