United Airlines is taking a bold step toward cutting its carbon footprint by investing in Twelve, a California-based company that makes Power-to-Liquid (PtL) fuels. This move is part of United’s Sustainable Flight Fund, and it supports the airline’s goal of cutting aviation emissions by 90% by 2050. The fund is designed to back new ideas that can make air travel cleaner.
Turning CO2 into Jet Fuel: How Twelve’s Tech Works
Twelve has built a new way to make jet fuel that doesn’t rely on crops, waste oils, or fossil fuels. Their patented process takes carbon dioxide (CO2) captured from the air or factories and mixes it with renewable electricity (like solar or wind power). The result is a liquid fuel that works like regular jet fuel but with much lower emissions.
This carbon transformation method creates a closed-loop carbon cycle. That means the CO2 used to make the fuel is the same CO2 released when planes burn it — no extra carbon is added to the atmosphere. By closing this loop, Twelve’s process helps slow climate change and reduces the need to pump new fossil fuels from the ground.
It also fixes another problem. Many traditional types of Sustainable Aviation Fuel (SAF) use materials like used cooking oil, animal fats, or crops such as corn and sugarcane. These feedstocks are limited and can be hard to get in large amounts. They also raise ethical questions about using farmland for fuel instead of food.
Twelve’s technology skips these issues entirely, making it easier to grow the SAF supply in the long run.
United’s investment comes after Twelve raised $83 million in its recent Series C funding round. The company is also building its first commercial facility, called AirPlant™ One, in Moses Lake, Washington. The plant will start operating this year and will produce 50,000 gallons of sustainable aviation fuel each year.
Backing the Future: United’s Sustainable Flight Fund
United Airlines is serious about finding new ways to make flying greener. The airline launched the Sustainable Flight Fund in 2023, raising over $200 million so far. Partners in the fund include Air Canada, Boeing, JPMorgan Chase, and other major companies.
The goal of the fund is to help new SAF projects grow faster. By putting money into companies like Twelve, United hopes to build up the supply of cleaner fuels and cut emissions without relying heavily on buying carbon offsets.
United is also unique among U.S. airlines for its long-term SAF focus. The company has invested in over 5 different SAF developers, including Fulcrum BioEnergy and Cemvita Factory. With these moves, United aims to secure steady supplies of SAF for its future flights.
Andrew Chang, head of United Airlines Ventures, noted:
“Scaling the SAF industry is the major hurdle air travel needs to clear in order to increase the supply and reduce the price of lower carbon fuels. Twelve has differentiated themselves through the capital they have raised and the SAF contracts they have secured.”
Why SAF Is So Important (and Growing Fast)
The aviation industry is under pressure to cut emissions. Planes account for about 2.5% of global CO2 emissions today, and demand for flights is still growing.
- The International Air Transport Association (IATA) says airlines used only 300 million liters of SAF in 2022, but demand could grow to 7 billion liters by 2030.
That’s a huge jump, showing just how important SAF is becoming. Some key facts to know about this jet fuel:
- Today, SAF makes up less than 1% of all jet fuel used globally.
- Experts think the SAF market could be worth over $15 billion by 2030.
- SAF can lower lifecycle emissions by up to 80% compared to fossil jet fuel.
Annual SAF demand range over the main and accelerated cases compared with capacity potential, 2020-2026

Even though SAF is good for the planet, it still costs 3 to 5x more than regular jet fuel. That’s why government policies are helping. For example, the U.S. Inflation Reduction Act (IRA) offers tax credits for low-carbon fuels, making SAF cheaper to buy. The European Union also passed rules requiring airlines to use increasing amounts of SAF starting in 2025.
Many believe that as technology improves and more SAF is made, costs will drop to match regular fuel prices by the early 2030s.
How Twelve Fits into the Bigger Picture
Twelve is one of the few companies working on Power-to-Liquid (PtL) SAF, which uses only CO2 and clean energy instead of crops or oils. This means their fuel can be scaled up faster without competing for food or farmland.

In 2023, Twelve opened its first demonstration plant in Moses Lake, Washington, to show that the technology works. Their long-term plan is to build bigger facilities that can produce millions of gallons of PtL SAF each year.
The U.S. Department of Energy has recognized PtL as a promising option for deep decarbonization. Studies show PtL fuels could cut aviation emissions by up to 90%, depending on how clean the electricity source is.
For United, working with Twelve is more than just cutting emissions — it’s about staying ahead of competitors. Many airlines still depend on buying carbon offsets to meet their climate goals. United wants to lead with direct emission cuts, which experts say is a stronger, more reliable strategy.
What Other Airlines Are Doing
United isn’t the only airline betting on SAF:
- Delta Air Lines partnered with Gevo to buy 385 million gallons of SAF over seven years.
- American Airlines signed a deal with Aemetis for 350 million gallons over 10 years.
- Lufthansa, KLM, and British Airways are also working with SAF producers like Neste and Velocys.
However, most of these deals are focused on SAF made from used cooking oil, fats, and biomass — not PtL. United’s early and large investment in Power-to-Liquid SAF sets it apart from airlines still relying mostly on crop-based or waste oil SAF.
What’s Next? A Greener Future for Aviation
The future of flight is changing fast. Analysts predict that investments like United’s could speed up a major shift in aviation. As governments around the world set stricter rules on emissions and offer more support for low-carbon technologies, SAF use is expected to soar.
If SAF production grows as hoped, airlines could shrink their carbon footprints by 40% to 70% in the next 20 years.
United’s investment in Twelve and other clean fuel companies shows it’s not just following the trend — it’s trying to shape the future of sustainable travel. The airline’s plan is to use a mix of SAF sources, from waste oils to PtL fuels, to make sure it can meet rising demand.
The post United Airlines Invests in Twelve for Sustainable Aviation Fuel appeared first on Carbon Credits.
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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.
Carbon Footprint
Carbon credit project stewardship: what happens after credit issuance
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