Why Aren’t We Talking More About Life-Cycle Assessments For Energy Sources?
Life-cycle assessments are ways to gauge the impact of any product or process. What is the cost of a system over a defined period of time? Life-cycle assessments are really important as we consider the transition to renewable energy sources, especially as we share insights into a zero emissions future with newbies or cynics.
Life-cycle assessments provide an exhaustive overview of the upstream (material sourcing and delivery) and downstream (product distribution, use, and disposal) impacts associated with any given system. Originally designed to focus on environmental impacts by scientists, they now have been extended to examine social and economic impacts, sometimes called life-cycle costing, by policymakers and decision-makers. The most comprehensive evaluations begin with the extraction of raw material; move to the various steps of production, implementation, and operation; and extend all the way to the energy use of carriers to perform work.
Life-cycle analysis considers both upfront cost of production and incremental costs of operation and depreciation. As a data-intensive methodology, it incorporates all inputs and outputs, requires detailed information, and is organized into databases known as life-cycle inventories.
What Do the Scientists Say about Energy Resources & their Life-Cycle Assessments?
Executive summaries from a variety of scientific white papers can offer us life cycle insights into different energy sources. Here are a few to peruse.
Active Transportation: Life-cycle analysis provides a comprehensive view of the environmental impact of transportation infrastructure due to processes involving construction, operation, and maintenance.
- Airplanes show the highest GHG emissions — 3 times that of cars and 6 times that of buses.
- Cars or buses show higher GHG emissions when considering life-cycle impacts than the results without the life-cycle impacts because the GHG impact of manufacturing and operating automobiles and buses could be greater than that of other modes.
- Walking does not require any tools, so its life-cycle impact is minimal compared to other modes.
- The GHG impact of producing and maintaining bicycles is much smaller than that of automobiles or public transportation vehicles.
- On balance, active transportation modes produce far less emissions than other modes even after taking into account all the life-cycle impacts.
Biomass: Co-firing biomass as a means of GHG abatement becomes economically competitive with traditional carbon capture and sequestration only after an incentive is in place to mitigate emissions.
- The point at which co-firing becomes an attractive option depends on the potential value of CO2, the level of an emissions penalty, and the type of plant.
- The break-even value would either represent the amount required on the sale of the captured CO2 in the capture cases, or a benefit received for the use of biomass as a fuel source in the non-capture cases, when compared to the economics of a supercritical (SC) PC plant without capture or co-firing.
- This value would need to be reached before incentivizing either CO2 capture or biomass co-firing. The emissions penalty would be the minimum value required to encourage the use of capture technology or abatement using biomass.
Hydropower: The assessment considers various ecological influence groups which could be generally categorized as — global warming, ozone formation, acidification, eutrophication, ecotoxicity, human toxicity, water consumption, stratospheric ozone depletion, ionizing radiation, and land use.
- Though water itself is not lethal, the electricity production process involves many stages, which creates environmental issues.
- Furthermore, the transportation medium of these elements to the plant location releases hazardous particles i.e., carbon monoxide, dust, and carcinogenic particles.
- Among the key impact groups, the whole outcomes show that a substantial ecological influence occurred at non-alpine region plants over alpine region plants. The reason behind this is that the long distance transportation of raw materials in non-alpine region hydropower plants due to unavailability at nearby locations where raw materials of the alpine based plants is available at nearby locations.
- The maximum impact is occurred at fine particulate matter formation impact category due to freshwater eutrophication category by both types of hydropower plants. The reason behind these impacts is the amount of toxic materials present as constituent of plant structure and its electricity production steps.
Natural Gas: This analysis takes into account a wide range of performance variability across different assumptions of climate impact timing.
- Natural gas-fired baseload power production has life cycle greenhouse gas (GHG) emissions 35% to 66 % lower than those for coal-fired baseload electricity.
- The lower emissions for natural gas are primarily due to the differences in average power plant efficiencies (46% efficiency for the natural gas power fleet versus 33% for the coal power fleet) and a higher carbon content per unit of energy for coal in comparison to natural gas.
- Natural gas-fired electricity has 57% lower GHG emissions than coal per delivered megawatt-hour (MWh) using current technology when compared with a 100-year global warming potential (GWP) using unconventional natural gas from tight gas, shale, and coal beds.
Petroleum: Petroleum is produced from crude oil, a complex mixture of hydrocarbons, various organic compounds, and associated impurities.
- The crude product exists as deposits in the earth’s crust, and the composition varies by geographic location and deposit formation contributors. Its physical consistency varies from a free flowing liquid to nearly solid. Crude oil is extracted from geological deposits by a number of different techniques.
- When comparing transportation GHG emissions, both the tailpipe or tank-to-wheel (TTW) emissions, and the upstream or well-to-tank (WTT) emissions are considered in the full well to wheel (WTW) life cycle.
- Extracting, transporting, and refining crude oil and bio-based alternatives on average account for approximately 20-30% of well-to-wheels (WTW) greenhouse gas (GHG) emissions with the majority of emissions generated during end use combustion in the vehicle phase (TTW).
- GHG emissions in the generic cases range from ≈105 to 120 g of CO2/MJ [gasoline basis, full fuel cycle, lower heating value (LHV) basis] when co-produced electricity displaces natural-gas-fired combined-cycle electricity.
- The carbon intensity varies with the energy demand of TEOR, the fuel combusted for steam generation, the amount of electric power co-generated, and the electricity mix. The emission range for co-generation-based TEOR systems is larger (≈70−120 g of CO2/MJ) when coal is displaced from the electricity grid (low) or coal is used for steam generation (high). The emission range for the California-specific cases is similar to that for the generic cases.
Solar: Life-cycle assessment is now a standardized tool to evaluate the environmental impact of photovoltaic technologies from the cradle to the grave.
- The carbon footprint emission from PV systems was found to be in the range of 14–73 g CO2-eq/kWh, which is 10 to 53 orders of magnitude lower than emission reported from the burning of oil (742 g CO2-eq/kWh from oil).
- Negative environmental impacts of PV systems could be substantially mitigated using optimized design, development of novel materials, minimize the use of hazardous materials, recycling whenever possible, and careful site selection. Such mitigation actions will reduce the emissions of GHG to the environment, decrease the accumulation of solid wastes, and preserve valuable water resources.
- Following a report published by the International Renewable Energy Agency (IRENA), the volume of PV panel waste could globally yield a value of up to 60–78 million tons by 2050. Recycling solar cell materials can also contribute up to a 42% reduction in GHG emissions.
Wind: Wind power presents minimal emissions and environmental impacts during the working phase, being considered as a “cleaner” generation source. But not all stages of wind power are so efficient.
- The extraction of raw materials, manufacturing, and transportation as part of wind power construction have significant emissions of CO2 and environmental impacts.
- Not only will improvements in logistics, transportation, a mixed electricity supplement, and a more efficient equipment production reduce CO2 emissions from wind power construction, new basic materials and innovative built techniques may decrease CO2 emissions and energy demand.
- Decommissioning stage may present a reduction of the energy consumption and CO2 emissions through reusing equipment, recycling critical materials in the end of life cycle, reducing the extraction of raw materials and the total consumption of resources.
- Such changes may create unexpected fluctuations in the market, such as shortages of supplies and dependence on exporters.
Of course, there are many other types of energy sources and other data analyses to consult to consider life cycle assessments. For more ideas, try Life Cycle Analysis of Energy for a good starting point.
Infographic retrieved from Department of Energy
Image retrieved from NASA
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Air taxi startup Vertical Aerospace achieved a world’s first this week, completing the first flight between two airports through public airspace for an eVTOL at the Royal International Air Tattoo in Gloucestershire, England.
The Royal International Air Tattoo (RIAT) is the world’s largest military airshow, held every July and serving as a public showcase for the latest advancements in aviation technology. It’s fitting, then, that RIAT served as setting for the Vertical VX4 prototype’s first piloted public flight.
The eVTOL aircraft flew 17 miles from the company’s Flight Test Centre at Cotswold Airport to RAF Fairford, a Royal Air Force station used by the US Air Force. The Vertical VX4 reached speeds of 115 mph, and an altitude of 1800 ft, and also marked the first landing at a public location for an aircraft of this type.
The Vertical Aerospace entry was the only battery-electric aircraft present at RIAT 2025, and the flight served as a demonstration of the company’s broader strategy to unlock new hybrid-electric applications for defense, logistics, and special/close support missions where the eVTOL’s (relatively) quiet operations could give it a tactical advantage.
“RIAT is a global stage for the most advanced, mission-ready aerospace technology, and we’re proud to showcase how electric aviation will support the future of defense,” says Stuart Simpson, CEO of Vertical Aerospace. “Our hybrid-electric roadmap unlocks new capabilities for military operations, and Vertical’s RIAT presence reinforces our commitment to playing a meaningful role in the future of military and special mission aviation.”
Vertical’s VX4 debuted last year, with a 20% increase in the power-to-weight ratio that enables a top cruising speed of 150 mph and transports four passengers plus a pilot up to 100 miles on a single charge.
The inaugural VX4 flight was witnessed by several thousand UK aircraft enthusiasts, and showed how an eVTOL aircraft could integrate with real-world airport operations, building momentum toward more regular, certified deployment.
Electrek’s Take
Archer, BETA, EHang, Joby, XPeng – the list of eVTOL manufacturers seems to be as long as the list of new electric car brands that didn’t exist back when I first started working with EVs back in ::gulp:: the 1990s. The future of regional point-to-point air travel certainly seems to be vertical, and electric.
SOURCE | IMAGES: Vertical Aerospace.
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Say what you will about Elon Musk, but Tesla has changed the way that millions of people buy cars and, by extension, car insurance. Now, Honda is taking a page from Tesla’s successful playbook and launching its own in-house insurance business. Enter: Honda Insurance Solutions.
Honda Insurance Solutions is being launched as a fully licensed insurance agency serving the insurance needs of Acura and Honda customers, but it’s not stopping at competitive pricing and coverage options for Honda cars and motorcycles. Honda Insurance Solutions promises to go several steps beyond Tesla’s offering with coverage for trailers, RVs, homes, and even pets.
“Honda Insurance Solutions offers customers access to coverage through a brand they know and trust,” says Petar Vucurevic, President, American Honda Insurance Solutions, LLC and Senior Vice President, American Honda Finance Corporation. “Insurance is a key touchpoint in the vehicle ownership journey, and we aim to deliver a superior experience tailored to the unique needs of each customer, while promoting safer driving and increased peace of mind on the road.”
The company says the launch of its new insurance business is just part of Honda’s broader digital vehicle sales platform strategy, with future plans to integrate insurance offerings into new products.
Electrek’s Take
It’s important to note some of the key differences between Honda’s insurance offering and Tesla’s. Honda isn’t offering discounts, they’re not bundling insurance premiums into the vehicle financing, and they’re not building their insurance offerings into their dealerships’ checkout/F&I offices. Not yet, anyway.
What Honda is doing right now is deepening relationships with its existing customers and finding ways to make money on products it hasn’t sold them – whether that’s the Harley parked in the garage next to their Prologue or the garage itself.
It’s a smart play. And, once Honda figures out a way to cut franchise dealers out entirely and go to a direct sales model, it’ll look even smarter.
SOURCE | IMAGES: Honda.
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Nobody ever says “this is business” before doing something nice, and the recently reborn Lion Electric company is keeping that streak alive by doing the unthinkable to cut costs: they’re going to void the warranties on hundreds of electric school buses.
In a letter issued to exiting Lion Electric customers last week, Deloitte Restructuring announced that the warranties on all Lion vehicles purchased outside of the company’s home Province of Quebec are null and void – leaving dozens of school districts in the lurch with stranded assets that won’t get fixed, and can’t be sold to generate funds for replacements.
“We are working with alternate vendors at the expense of the school district to help keep our electric buses functional and on the road,” explains Dr. Richard Decman, Superintendent of Herscher CUSD No. 2 district in Herscher, Illinois. “Currently, six of our 25 (Lion) electric buses need some type of repair.”
Student Transportation News reports that Lion buses represent fully half of Herscher’s overall fleet of 50 buses, and that the district has received nearly $10 million for the purchase of 25 electric buses and the related charging stations from various state and utility incentive programs.
Herscher isn’t the only district having problems with Lion buses. “All four Lion buses that we own are currently parked and not being used,” Coleen Souza, interim transportation director of Winthrop Public Schools, told Clean Trucking. “Two of them are in need of repairs which would cost us money which we are not willing to invest in because the buses do not run for more than a month before needing more repairs.”
More of the same in Maine, where Yarmouth School Department bought two Lion Electric buses in 2023 with the state covering the costs. According to Superintendent Andrew Dolloff, the buses almost never worked. “We’ve had some sporadic service over the past two years, but as soon as the tech leaves, the buses produce error codes again,” explained Dolloff. ” and “Then the technician quits or is released, and we wait a few months for the next response.”
Dolloff added that Yarmouth’s electric buses did not operate during the 2024-25 school year.
Lion’s new owners are seemingly uninterested in their customers’ plight – which might be easily dismissed if those new owners, Groupe MACH, weren’t also the old owners of Lion Electric.
That’s right, kids. Quebec-based real estate company Groupe MACH, which stepped in to “save” Lion Electric earlier this summer, along with Ontario-based Mirella & Lino Saputo Foundation, bought $90 million of equity in Lion Electric back in 2023. And, while the MACH people may not have been the ones who ultimately made the call about voiding the warranties (that decision was made by the Deloitte bankruptcy team), it is absolutely Group MACH who have, to date, not announced plans to continue to honor those warranties, either.
Make of that what you will.
Deloitte Lion letter
SOURCES: School Transportation News, Clean Trucking, Deloitte.
If you’re considering going solar, it’s always a good idea to get quotes from a few installers. To make sure you find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. It has hundreds of pre-vetted solar installers competing for your business, ensuring you get high-quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use, and you won’t get sales calls until you select an installer and share your phone number with them.
Your personalized solar quotes are easy to compare online and you’ll get access to unbiased Energy Advisors to help you every step of the way. Get started here.
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