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Solar energy in the US produced more electricity than coal for the first time in May, marking a historic milestone. This shift reflects ongoing growth in renewables amid declining coal use, despite federal efforts to support coal. Solar beats coal in the US electricity mix for the first month ever.
In May 2026, solar power generated more electricity in the United States than coal for the first time, according to data from Ember and the Solar Energy Industries Association. This marks a historic shift in the US energy mix, highlighting the ongoing rise of renewable energy despite federal policies aimed at supporting coal.
Data released on Wednesday show that solar supplied 12.8% of US electricity in May, surpassing coal’s 12.2%, which was its fourth-lowest monthly share ever. This milestone is driven by a continued decline in coal generation, which hit an all-time monthly low in April and only modestly rebounded in May, while solar and other renewables have steadily increased their share of power generation. Solar power production undercut by coal pollution.
Solar has become the third-largest source of electricity in the US, behind natural gas and nuclear, according to Nicolas Fulghum, senior analyst at Ember. Experts note that the trend is likely to continue, with solar expected to overtake coal on an annual basis within a few years, as demand for clean energy grows amid increasing electricity needs for transportation, heating, and industry.
Despite federal efforts to bolster coal, including a recent plan announced by former President Trump to spend nearly $700 million supporting coal-fired plants and exports, the decline of coal persists. Meanwhile, solar has been the leading source of new power capacity for five consecutive years, with nearly all new generation projects in early 2026 being solar or battery storage.
Implications of Solar Surpassing Coal in US Power Generation
This milestone demonstrates a significant shift toward renewable energy in the US, indicating that solar is becoming a dominant force despite political efforts to favor coal. It highlights the declining viability of coal as a source of power and underscores the increasing economic attractiveness of solar investments, which could accelerate the transition to cleaner energy sources and reduce carbon emissions.
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Recent Trends in US Energy Production and Policy
Over the past two decades, US electricity consumption has largely stabilized, but demand is now rising due to growth in electric vehicles, manufacturing, and electrification of heating. Solar beats coal in the US electricity mix for the first month ever. During this period, coal’s share in the energy mix has steadily declined, while renewable sources, especially solar and wind, have gained ground. Despite federal policies supporting coal under the Trump administration, the overall trend favors renewables, which now dominate new capacity additions.
Globally, renewable energy is expanding rapidly, with projections indicating that renewables will account for nearly 45% of global electricity generation by 2030, according to the International Energy Agency.
“Solar power has risen steadily in the US energy mix, while coal’s share has diminished significantly over the years.”
— an anonymous researcher
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Uncertainties Surrounding Future Energy Mix Trends
While data confirm solar has surpassed coal for electricity generation in May, it remains unclear how sustained this trend will be throughout the year and in the coming years. Factors such as policy changes, technological developments, and market dynamics could influence the pace of renewable growth and coal’s decline. Additionally, the impact of recent federal support for coal remains uncertain in the context of ongoing market shifts.
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Next Steps in US Renewable and Coal Industry Trajectory
Expect continued monitoring of monthly energy data to confirm if solar maintains its lead over coal. Policy debates and investments in renewable infrastructure are likely to influence the pace of transition. Industry analysts predict that solar will become the primary source of new power capacity in the US within the next few years, further diminishing coal’s role in the energy landscape.
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Key Questions
What caused solar to surpass coal in May?
Solar power generation increased steadily due to ongoing capacity additions and favorable market conditions, while coal generation declined to record lows, allowing solar to overtake coal in May.
Does this mean coal is no longer relevant in the US energy mix?
While coal’s share continues to decline, it remains part of the overall energy mix, but its role is diminishing as renewables grow more cost-effective and politically supported.
Will solar continue to grow faster than other energy sources?
Current trends indicate that solar is likely to remain the fastest-growing energy source in the US, driven by technological improvements, decreasing costs, and policy support.
How will federal policies affect this trend?
Federal policies can influence the pace of renewable deployment. Supportive policies may accelerate growth, while policies favoring coal could slow down the transition, but market forces are currently favoring renewables.
What does this mean for consumers and the environment?
Increased solar generation can lead to cleaner electricity, reducing greenhouse gas emissions. For consumers, it may mean lower electricity costs over time as renewables become more prevalent.
Source: Hacker News
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