- Enhanced Rock Weathering (ERW) is gaining attention as a scalable carbon removal solution. A recent study suggests the method could remove up to 350 million tonnes of CO₂ per year by 2050 if widely deployed.
What is Enhanced Rock Weathering?
Enhanced Rock Weathering is a carbon removal method that speeds up a natural geological process. Rocks such as basalt and silicates naturally react with carbon dioxide (CO₂) over thousands of years.
ERW involves crushing these rocks into fine powder and spreading them on the soil. The larger surface area makes the rocks react faster with CO₂ in the air and soil. Scientists believe this could permanently capture and store carbon as stable minerals or ocean carbon pools.
This carbon removal has emerged as a promising part of the climate toolkit to help lower atmospheric CO₂ levels.
How ERW Removes Carbon
Natural rock weathering already captures about 1.1 billion tonnes of CO₂ per year from the atmosphere. ERW accelerates this process by increasing the rock’s contact with CO₂.
When rainwater dissolves CO₂, it forms carbonic acid, which reacts with silicate rocks. This reaction locks carbon into bicarbonate ions. Some of the ions wash into rivers and reach the ocean, where they can stay for thousands of years. Because the carbon is stored this way, it is unlikely to return to the atmosphere soon.
In agriculture, ground rocks applied to the soil enhance this process. The rocks react with CO₂ around plant roots and soil microbes. Some companies source rock dust from quarries. They use industrial byproducts instead of new mining.
350 Million Tonnes: The Mid-Century Potential
New research shows that ERW could make a major contribution to climate goals by mid-century. Scaling ERW on suitable agricultural land and other surfaces worldwide could remove an estimated 350 million tonnes of CO₂ per year by 2050. This would come from fast-tracking the natural weathering process across large areas of cropland.
Global modelling studies also suggest even bigger potential. ERW could cut hundreds of millions to billions of tonnes of CO₂ each year by 2050. This depends on widespread use, strong policy support, and proper infrastructure.
Some studies focused on the United States have reported similar potential. Research shows that ERW in U.S. agriculture could cut CO₂ by 160 to 300 million tonnes each year by 2050. If expanded, this number could reach 250 to 490 million tonnes by 2070.

This 350 million-tonne figure sits within a broader picture of potential CDR capacity. Some analyses suggest that ERW could remove billions of tonnes every year. This would occur if the method is used widely across continents with big agricultural sectors.
Why ERW Stands Out in the Carbon Removal Race
One key reason ERW attracts attention is its durability. Carbon captured through rock weathering is stored in stable forms that can last thousands to millions of years. This permanence can make ERW more durable than some nature-based solutions that store carbon only for the lifetime of trees or plants.
ERW also builds on existing farming and mining systems. The technology uses known equipment and methods for crushing and spreading rock. This means ERW is likely easier to use widely than complex methods like direct air capture (DAC). DAC needs big new facilities and a lot of energy.
Enhanced rock weathering has additional benefits beyond carbon capture. When applied to agricultural soils, silicate rock dust can improve soil nutrition and structure. This can enhance crop yields and reduce the need for some fertilizers. Some research has even shown that certain enhanced weathering practices can improve crop performance while removing CO₂.
ERW Carbon Removal Credits Snapshot
ERW has begun to enter this market with real, verified credits. In early 2025, InPlanet and Isometric issued the first independently verified ERW carbon removal credits. These credits show long-lasting CO₂ removal. They are certified with strict monitoring, reporting, and verification (MRV) protocols.
While ERW still makes up a very small share of total credits traded in 2025, its emergence marks a milestone for carbon removal markets. Early tracking shows that nearly one million ERW credits have been sold, and the total investment in ERW projects is about US$121 million. This reflects increasing interest from companies and offset buyers.

ERW carbon credit prices now range from $200–$500 per tonne. This spread comes from differences in project size, location, and how mature each method is.
Early ERW credits add variety to the carbon market. They focus on carbon removal, which is attracting buyers like Google and Microsoft. They want long-term, verified removal credits along with avoidance credits.
- SEE MORE: Microsoft Backs InPlanet’s Enhanced Rock Weathering Push to Remove 28,500 Tons of CO₂ in Brazil

Scaling Up: Verification, Logistics, and Adoption Hurdles
Despite its promise, ERW faces several challenges before it can deliver on its full potential by 2050.
- Monitoring and verification: Measuring exactly how much CO₂ ERW removes is complex. The process occurs over time and involves soil chemistry, water movement, and geological cycles. Accurate monitoring, reporting, and verification (MRV) systems are needed to ensure that carbon removal amounts are real and not overstated.
- Deployment logistics: Scaling ERW globally would require vast amounts of crushed rock. This means expanded quarrying, crushing, transport, and spreading infrastructure. These steps must be done efficiently to avoid high emissions from transport and machinery.
- Agronomic adoption: Farmers and landowners would need incentives and support to adopt ERW. Also, the use of rock dust must align with soil types, crops, and local farming practices. Long-term studies are ongoing to determine the best application rates and conditions for different regions.
- Environmental questions: While ERW can benefit soil fertility, some uncertainties remain about long-term ecosystem impacts and potential side effects. Careful planning and studies are needed before very large-scale deployments can occur.
A Key Piece in the Net-Zero Puzzle
Climate models show that reducing emissions alone won’t be enough to meet the Paris Agreement’s goals. Many experts argue that carbon dioxide removal (CDR) must play a role in keeping the temperature rise below 1.5°C. ERW is one of several CDR methods being considered.
Other CDR approaches include direct air capture (DAC) and bioenergy with carbon capture and storage (BECCS). DAC uses machines to pull CO₂ directly from the air, but it is still expensive and energy-intensive.
BECCS captures CO₂ from biomass energy but depends on large dedicated biomass supplies. ERW, by contrast, can leverage natural soil processes and agricultural lands for scalable removal.
Policy makers and climate planners see enhanced rock weathering as one piece of a broader carbon removal portfolio. ERW, along with strong emissions cuts, nature-based solutions like reforestation, and new technologies, can help balance hard-to-abate emissions in sectors such as industry and agriculture.
To reach 350 million tonnes of CO₂ removal per year by 2050, ERW must scale rapidly. This will require stronger global commitment from governments, research institutions, and private investors.
Moreover, investment in field trials and pilot programs will help refine practices and decrease uncertainty. As more data becomes available, ERW techniques can be optimized for different soils, climates, and crop systems.
Public policy support will also be key. Carbon markets, incentives, and crediting systems that recognize verified removal could help fund large-scale ERW deployment. If aligned with broader climate goals, ERW could become a major contributor to meeting global net-zero targets.
The post Rocking the Carbon Clock: ERW Could Cut 350 Million Tonnes of CO₂ Annually by 2050 appeared first on Carbon Credits.
Carbon Footprint
The real cost of 1 tonne of CO2: Translating carbon into hectares
Every business carbon footprint report ends with a number, the amount of carbon emissions produced by the business, less the amount of carbon reduced and offset, given in tonnes of CO₂. Many of the people who sign off on that number, including those who paid for it, cannot picture what it represents on the ground. A tonne is a unit of mass. CO₂ is invisible. The link between the amount offset in the report and a real piece of restored forest somewhere in the world is almost never indicated.
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Carbon Footprint
Finding Nature Based Solutions in Your Supply Chain
Carbon Footprint
How Climate Change Is Raising the Cost of Living
Americans are paying more for insurance, electricity, taxes, and home repairs every year. What many people may not realize is that climate change is already one of the drivers behind those rising costs.
For many households, climate change is no longer just an environmental issue. It is becoming a cost-of-living issue. While climate impacts like melting glaciers and shrinking polar ice can feel distant from everyday life, the financial effects are already showing up in monthly budgets across the country.
Today, a larger share of household income is consumed by fixed costs such as housing, insurance, utilities, and healthcare. (3) Climate change and climate inaction are adding pressure to many of those expenses through higher disaster recovery costs, rising energy demand, infrastructure repairs, and increased insurance risk.
The goal of this article is to help connect climate change to the everyday financial realities people already experience. Regardless of where someone stands on climate policy, it is important to recognize that climate change is already increasing costs for households, businesses, and taxpayers across the United States.
More conservative estimates indicate that the average household has experienced an increase of about $400 per year from observed climate change, while less conservative estimates suggest an increase of $900.(1) Those in more disaster-prone regions of the country face disproportionate costs, with some households experiencing climate-related costs averaging $1,300 per year.(1) Another study found that climate adaptation costs driven by climate change have already consumed over 3% of personal income in the U.S. since 2015.(9) By the end of the century, housing units could spend an additional $5,600 on adaptation costs.(1)
Whether we realize it or not, Americans are already paying for climate change through higher insurance premiums, energy costs, taxes, and infrastructure repairs. These growing expenses are often referred to as climate adaptation costs.
Without meaningful climate action, these costs are expected to continue rising. Choosing not to invest in climate action is also choosing to spend more on climate adaptation.
Here are a few ways climate change is already increasing the cost of living:
- Higher insurance costs from more frequent and severe storms
- Higher energy use during longer and hotter summers
- Higher electricity rates tied to storm recovery and grid upgrades
- Higher government spending and taxpayer-funded disaster recovery costs
The real debate is not whether climate change costs money. Americans are already paying for it. The question is where we want those costs to go. Should we invest more in climate action to help reduce future climate adaptation costs, or continue paying growing recovery and adaptation expenses in everyday life?
How Climate Change Is Increasing Insurance Costs
There is one industry that closely tracks the financial impact of natural disasters: insurance. Insurance companies are focused on assessing risk, estimating damages, and collecting enough revenue to cover losses and remain financially stable.
Comparing the 20-year periods 1980–1999 and 2000–2019, climate-related disasters increased 83% globally from 3,656 events to 6,681 events. The average time between billion-dollar disasters dropped from 82 days during the 1980s to 16 days during the last 10 years, and in 2025 the average time between disasters fell to just 10 days. (6)
According to the reinsurance firm Munich Re, total economic losses from natural disasters in 2024 exceeded $320 billion globally, nearly 40% higher than the decade-long annual average. Average annual inflation-adjusted costs more than quadrupled from $22.6 billion per year in the 1980s to $102 billion per year in the 2010s. Costs increased further to an average of $153.2 billion annually during 2020–2024, representing another 50% increase over the 2010s. (6)
In the United States, billion-dollar weather and climate disasters have also increased significantly. The average number of billion-dollar disasters per year has grown from roughly three annually during the 1980s to 19 annually over the last decade. In 2023 and 2024, the U.S. recorded 28 and 27 billion-dollar disasters respectively, both setting new records. (6)
The growing impact of climate change is one reason insurance costs continue to rise. “There are two things that drive insurance loss costs, which is the frequency of events and how much they cost,” said Robert Passmore, assistant vice president of personal lines at the Property Casualty Insurers Association of America. “So, as these events become more frequent, that’s definitely going to have an impact.” (8)
After adjusting for inflation, insurance costs have steadily increased over time. From 2000 to 2020, insurance costs consistently grew faster than the Consumer Price Index due to rising rebuilding costs and weather-related losses.(3) Between 2020 and 2023 alone, the average home insurance premium increased from $75 to $360 due to climate change impacts, with disaster-prone regions experiencing especially steep increases.(1) Since 2015, homeowners in some regions affected by more extreme weather have seen home insurance costs increased by nearly 57%.(1) Some insurers have also limited or stopped offering coverage in high-risk areas.(7)
For many families, rising insurance costs are no longer occasional financial burdens. They are becoming recurring monthly expenses tied directly to growing climate risk.
How Rising Temperatures Increase Household Energy Costs

The financial impacts of climate change extend beyond insurance. Rising temperatures are also changing how much energy Americans use and how utilities plan for future electricity demand.
Between 1950 and 2010, per capita electricity use increased 10-fold, though usage has flattened or slightly declined since 2012 due to more efficient appliances and LED lighting. (3) A significant share of increased energy demand comes from cooling needs associated with higher temperatures.
Over the last 20 years, the United States has experienced increasing Cooling Degree Days (CDD) and decreasing Heating Degree Days (HDD). Nearly all counties have become warmer over the past three decades, with some areas experiencing several hundred additional cooling degree days, equivalent to roughly one additional degree of warmth on most days. (1) This trend reflects a warming climate where air conditioning demand is increasing while heating demand generally declines. (4)
As temperatures continue rising, households are expected to spend more on cooling than they save on heating. The U.S. Energy Information Administration (EIA) projects that by 2050, national Heating Degree Days will be 11% lower while Cooling Degree Days will be 28% higher than 2021 levels. Cooling demand is projected to rise 2.5 times faster than heating demand declines. (5)
These projections come from energy and infrastructure experts planning for future electricity demand and grid capacity needs. Utilities and grid operators are already preparing for higher peak summer electricity loads caused by rising temperatures. (5)
Longer and hotter summers also affect how homes and buildings are designed. Buildings constructed for past climate conditions may require upgrades such as larger air conditioning systems, stronger insulation, and improved ventilation to remain comfortable and energy efficient in the future. (10)
For many households, this means higher monthly utility bills and potentially higher long-term home improvement costs as temperatures continue to rise.
How Climate Change Affects Electricity Rates
On an inflation-adjusted basis, average U.S. residential electricity rates are slightly lower today than they were 50 years ago. (2) However, climate-related damage to utility infrastructure is creating new upward pressure on electricity costs.
Electric utilities rely heavily on above-ground poles, wires, transformers, and substations that can be damaged by hurricanes, storms, floods, and wildfires. Repairing and upgrading this infrastructure often requires substantial investment.
As a result, utilities are increasing electricity rates in response to wildfire and hurricane events to fund infrastructure repairs and future mitigation efforts. (1) The average cumulative increase in per-household electricity expenditures due to climate-related price changes is approximately $30. (1)
While this increase may appear modest today, utility costs are expected to rise further as climate-related infrastructure damage becomes more frequent and severe.
How Climate Disasters Increase Government Spending and Taxes
Extreme weather events also damage public infrastructure, including roads, schools, bridges, airports, water systems, and emergency services infrastructure. Recovery and rebuilding costs are often funded through taxpayer dollars at the federal, state, and local levels.
The average annual government cost tied to climate-related disaster recovery is estimated at nearly $142 per household. (1) States that frequently experience hurricanes, wildfires, tornadoes, or flooding can face even higher public recovery costs.
These expenses affect taxpayers whether they personally experience a disaster or not. Climate-related recovery spending can increase pressure on public budgets, emergency management systems, and infrastructure funding nationwide.
Reducing Climate Costs Through Climate Action
While this article focuses on the growing financial costs associated with climate change, the issue is not only about money for many people. It is also about recognizing our environmental impact and taking responsibility for reducing it in order to help preserve a healthy planet for future generations.
While individuals alone cannot solve climate change, collective action can help reduce future climate adaptation costs over time.
For those interested in taking action, there are three important steps:
- Estimate your carbon footprint to better understand the emissions connected to your lifestyle and activities.
- Create a plan to gradually reduce emissions through energy efficiency, cleaner technologies, and more sustainable choices.
- Address remaining emissions by supporting verified carbon reduction projects through carbon credits.
Carbon credits are one of the most cost-effective tools available for climate action because they help fund projects that generate verified emission reductions at scale. Supporting global emission reduction efforts can help reduce the long-term impacts and costs associated with climate change.
Visit Terrapass to learn more about carbon footprints, carbon credits, and climate action solutions.
The post How Climate Change Is Raising the Cost of Living appeared first on Terrapass.
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