Renewable energy sources are better than nonrenewable ones across nearly every measure that matters: cost, pollution, health impact, water use, and long-term job creation. The gap has widened dramatically in the last decade, to the point where building new solar or wind capacity is now cheaper than running many existing coal plants. Here’s a closer look at why renewables come out ahead.
Renewables Are Now Cheaper to Build
The most straightforward advantage is cost. Lazard’s 2025 analysis of levelized energy costs, which account for everything from construction to fuel to maintenance over a plant’s lifetime, puts onshore wind at $44 per megawatt-hour and utility-scale solar at $50. Coal comes in at $109, and natural gas combined-cycle plants at $66. That means new wind power costs less than half what new coal power does, and solar undercuts coal by more than 50% as well.
These numbers reflect a structural advantage renewables have over fossil fuels: once you build a solar farm or wind turbine, the fuel is free. Coal and gas plants face ongoing fuel costs that fluctuate with global commodity markets, making their long-term pricing unpredictable. Renewable projects lock in a price at construction and hold it for 20 to 30 years.
Carbon Emissions Aren’t Even Close
Coal-fired power plants emit about 2.31 pounds of CO2 per kilowatt-hour of electricity. Natural gas is cleaner at 0.96 pounds, but that’s still nearly a pound of carbon dioxide for every kilowatt-hour your home uses. The U.S. Energy Information Administration classifies electricity from solar, wind, and hydropower as carbon neutral during operation.
Renewables do produce some carbon emissions during manufacturing. Building solar panels and wind turbines requires energy-intensive processes, and most of that energy still comes from conventional sources. A lifecycle analysis published in PMC found that over 90% of a renewable power plant’s total environmental impact occurs during the manufacturing phase, not during decades of operation. Carbon dioxide from fossil fuel use in production accounts for the largest share. But even with manufacturing factored in, the total lifecycle emissions of renewables are a small fraction of what fossil fuel plants produce over the same period, because burning coal or gas generates emissions continuously, every hour of every day, for the entire life of the plant.
The Hidden Health Costs of Fossil Fuels
Burning fossil fuels releases fine particulate matter and chemical precursors that cause respiratory disease, heart disease, and premature death. A study published in Environmental Science & Technology quantified these costs across the U.S. and found that the health damage from fossil fuel electricity amounts to $362 billion to $887 billion annually, or roughly 2.5% to 6% of national GDP.
Broken down by fuel type, the health cost of coal power is $0.19 to $0.45 per kilowatt-hour, oil is $0.08 to $0.19, and natural gas is $0.01 to $0.02. For coal, the hidden health cost alone is higher than the sticker price of the electricity itself. The researchers concluded that American electricity consumers should be willing to pay $0.24 to $0.45 per kilowatt-hour for emission-free alternatives, simply based on the health savings. Wind and solar, which produce no combustion emissions during operation, eliminate this cost entirely.
These aren’t abstract numbers. They represent hospital visits for asthma attacks, lost workdays, and shortened lives in communities near power plants. The costs vary geographically: health damages per kilowatt-hour in Maryland were found to be nearly 80 times higher than in California, largely due to population density near plants and prevailing wind patterns that carry pollution into populated areas.
Water Use Is Vastly Different
Thermoelectric power plants, the kind that burn coal or gas to create steam, are among the largest water consumers in the country. In 2021, 73% of U.S. utility-scale electricity came from these plants. Coal plants averaged 19,185 gallons of water withdrawn per megawatt-hour of electricity produced. Natural gas combined-cycle plants used 2,803 gallons per megawatt-hour.
Wind turbines and solar panels use no cooling water at all. In regions facing drought or water scarcity, this difference alone can tip the scales. Every megawatt-hour shifted from coal to solar saves roughly 19,000 gallons of water, enough to fill a small swimming pool. As freshwater becomes scarcer in many parts of the world, the water intensity of your electricity source becomes a practical concern, not just an environmental one.
Renewables Create More Jobs
Global clean energy employment reached 35 million in 2022, surpassing fossil fuel employment (32 million) for the first time in 2021. Since the pandemic, clean energy sectors have added 4.7 million jobs worldwide, while fossil fuel employment remains about 1.3 million below pre-pandemic levels and continues to trend downward.
The projections reinforce this gap. Based on current policies, 8 million new clean energy jobs will be added globally by 2030, while fossil fuel jobs will decline by 2.5 million, for a net gain of 5.7 million energy jobs. Many of these are in manufacturing, installation, and maintenance of solar panels, wind turbines, and batteries. They tend to be distributed across rural and suburban areas rather than concentrated in mining regions, which spreads economic benefits more broadly.
The Intermittency Problem Is Shrinking
The most common argument against renewables is that the sun doesn’t always shine and the wind doesn’t always blow. This is real, but it’s a solvable engineering challenge rather than a fundamental flaw. Battery storage costs have fallen sharply: lithium iron phosphate batteries currently store and deliver electricity at about 24 cents per kilowatt-hour, and the U.S. Department of Energy has set a target of 5 cents per kilowatt-hour by 2030, a 90% reduction from 2020 costs.
Reaching a zero-carbon grid by 2050 would require roughly 930 gigawatts of storage capacity in the U.S., with 225 to 460 gigawatts of that needing to be long-duration storage capable of holding energy for days or weeks rather than hours. That’s a massive buildout, but the trajectory is moving in the right direction. Grid-scale storage already improves reliability and lowers costs in areas with high renewable penetration, smoothing out the variability that once made utilities hesitant to rely on wind and solar.
Fossil Fuels Run Out, Renewables Don’t
Coal, oil, and natural gas exist in finite quantities underground. Extracting them becomes more expensive and environmentally destructive over time as the easiest deposits are depleted. Solar radiation and wind are replenished continuously. This isn’t a concern for next year or even next decade, but over the long arc of energy planning, building infrastructure around a fuel source that cannot be exhausted is fundamentally more stable than one that can.
This also insulates economies from supply shocks. Countries that depend heavily on imported fossil fuels are vulnerable to price spikes driven by geopolitics, wars, or supply disruptions. Renewable energy is generated locally, from sunlight and wind available in every country on Earth. That energy independence translates into more predictable electricity prices and fewer economic disruptions tied to events halfway around the world.