Duke Energy, the second-largest U.S. electric company by market value, has announced plans to shut down all 11 of its remaining coal-fired power plants by 2035 C.E. and more than double its renewable energy capacity by 2030 C.E. — a shift that represents one of the most significant clean energy commitments from a major American utility in recent memory.
At a glance
- Coal phase-out: Duke will close all 11 remaining coal plants by 2035 C.E., including six across North Carolina and South Carolina, four in Indiana, and one in Florida.
- Renewable energy capacity: Duke currently owns or operates more than 10,000 megawatts of solar and wind power and aims to grow that figure to 24,000 MW by 2030 C.E.
- Clean energy investment: The company plans to spend over $130 billion over the next decade, with 80 percent directed toward cleaner energy sources and grid modernization.
Why this matters for U.S. energy
Coal still accounted for a significant share of U.S. electricity generation when Duke made this announcement, making the company’s commitment a notable signal for the broader industry. Duke serves roughly 8 million customers across six states, which means its choices ripple outward — shaping grid infrastructure, energy prices, and carbon emissions for millions of households.
The scale of the investment is striking. Duke’s $130 billion, decade-long spending plan dwarfs what most private companies commit to energy transition. That figure includes a five-year capital plan of about $63 billion — $4 billion more than previously announced. CEO Lynn Good described the transition as requiring “candid discussions about the appropriate energy policy for each state, recognizing the unique differences of existing resources, customer bases and policy objectives.”
Duke’s coal exit also aligns with — though it doesn’t fully match — the Biden administration’s goal of decarbonizing the U.S. power sector by 2035 C.E. Many U.S. utilities have set net-zero targets for 2050 C.E. instead. Duke’s 2035 coal deadline puts it ahead of that slower curve, at least on coal specifically.
State by state, the picture takes shape
The details vary by region. In North Carolina, Duke is working to cut CO2 emissions 70 percent from 2005 C.E. levels under a wide-ranging state energy law passed in 2021 C.E. In Florida, the company plans to spend $1 billion adding 750 megawatts of solar over three years, supplementing the 600 MW already on the grid. In Indiana, Duke has filed a long-term energy plan that includes speeding up coal closures, adding 7,000 MW of renewables over 20 years, and cutting carbon emissions 88 percent from 2005 C.E. levels by 2040 C.E.
North Carolina utility regulators are developing new rate structures designed to let Duke recover its investment costs while minimizing sudden price jumps for customers — what the industry calls “rate shock.” Whether Duke will pursue similar arrangements in other states remains to be seen.
Headwinds worth watching
The transition is not without friction. Duke has faced supply chain disruptions affecting solar panels and other components, pushing some large-scale renewable projects into later years. Alternative vendors sometimes carry higher costs, and the timing of project completions has proven difficult to lock down. Company CFO Steven Young acknowledged the need to reassess project priorities as conditions evolve.
Duke and other major U.S. utilities have also pressed Congress to pass clean energy tax incentives — including production and investment tax credits for solar, a direct-pay option for clean energy credits, and credits for nuclear, transmission, storage, and hydrogen. Good was direct: without those incentives, the cost of the transition falls more heavily on ratepayers. The fate of those provisions, tied up in broader legislative debates at the time of the announcement, remained uncertain.
It’s also worth holding the broader picture in view. Closing coal plants by 2035 C.E. still means more than a decade of continued coal combustion, and the company’s net-zero carbon target extends to 2050 C.E. The pace of transition matters as much as the destination. Still, for a regulated utility of Duke’s size, committing to exit coal entirely — and backing that with $130 billion — is a different order of magnitude than a press release pledge.
Duke’s move reflects a pattern visible across the International Energy Agency’s tracking of global renewables growth: once the economics of clean energy tip decisively, even large, slow-moving utilities begin to move. Duke’s scale means this particular move carries real weight.
For communities near Duke’s coal plants — many of them lower-income and disproportionately home to people of color, who have long borne the health costs of coal pollution — the closures represent a potential improvement in air and water quality that price charts alone don’t capture. The American Lung Association has documented the outsized respiratory health burden that coal plant communities carry.
The company’s shift away from expanding its wholesale commercial renewable business toward building renewables inside its core regulated territories also signals a strategic bet: that the most durable clean energy growth happens closer to home, embedded in the grid customers already depend on. The U.S. Department of Energy’s solar data shows how rapidly that embedded capacity has grown nationwide.
How Duke manages the workforce transition at its coal plants — and whether it invests in retraining and economic support for those communities — will be one of the more telling measures of whether this is a genuine transition or simply a financial reallocation. The Natural Resources Defense Council has outlined what a just transition looks like in practice for coal-dependent regions.
Read more
For more on this story, see: E&E News — Duke Energy plans to exit all coal, double renewables
For more from Good News for Humankind, see:
- Renewables now make up at least 49% of global power capacity
- Global suicide rate has fallen by 40% since 1995
- The Good News for Humankind archive on renewable energy
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