Across hundreds of procurement records and very different transit markets, battery-electric has become the reference technology for zero-emission bus fleets.
Zero-emission bus procurement has moved beyond the stage where battery-electric and hydrogen fuel-cell buses should be treated as two parallel technologies waiting for the market to decide between them. Transit agencies have now spent years operating both, rebuilding depots, installing charging and refuelling infrastructure, training technicians and discovering which assumptions … [continued]
Every Tesla Model 3 and Model Y built in the US on or after October 1, 2026, is capable of vehicle to home (V2H) operation, according to Not A Tesla App. In fact, some cars built as long ago as April may have the upgrade available, as some cars were … [continued]
Healthy social housing has to provide winter warmth, summer safety and clean indoor air, while retrofit sequencing determines how quickly residents receive those benefits.
“Fabric first” starts from a sensible building-efficiency idea. Improve insulation, stop unnecessary draughts, fix ventilation and reduce heat demand before replacing a gas or oil boiler with a heat pump. Some homes plainly need that work, and cheap measures such as loft insulation, draught repair and basic remediation can be … [continued]
Graphyte can deliver durable carbon removal, but burial should compete with the other useful services the same biomass could provide first.
Graphyte’s Carbon Casting process is unusually tangible for engineered carbon removal. Residual biomass is dried, compressed into dense blocks, protected from water and microbes, and stored underground so its carbon stays out of the atmosphere for a very long time. Compared with direct air capture and some other carbon-removal proposals, … [continued]
Hawaiʻi’s proposed LNG bridge has a costly possible exit in imported green ammonia, while local solar and storage offer another path.
The argument for bringing liquefied natural gas to Oʻahu is straightforward enough. LNG could replace oil for a period, potentially lower generation costs and give Hawaiʻi more time to build out renewable electricity. The difficulty is that Hawaiʻi law requires electric utilities to reach 100% renewable electricity generation by 2045, … [continued]
Most NYC e-bike and pedestrian deaths occur in crashes involving motor vehicles. That does not establish fault, but it changes the framing.
A recent New York Times newsletter described fatal e-bike and electric-scooter crashes in New York City as reaching a record high. “Record” is a powerful word, especially when the vehicles involved are relatively new, but it can also direct attention toward what the victim was riding and away from what … [continued]
Heart’s ES-36 keeps electric motors at the propellers while turbogenerators extend missions beyond practical battery range.
On August 12, Heart Aerospace flew its X1 demonstrator for 27 minutes from Plattsburgh International Airport in New York. The aircraft weighed more than 25,000 pounds, had a 106-foot wingspan and put more than a megawatt through its electric propulsion system while taxiing, taking off, climbing, maneuvering and landing. There … [continued]
When gas prices spike, families pay. Electric vehicles offer a cheaper alternative. Thanks to the war in Iran, the price of a gallon of gasoline is $4.40 and rising. We have seen this movie before; a global conflict or other unforeseen supply disruption drives oil and gas prices upward, putting … [continued]
Kraaken combines ocean thermal generation, AI computing, freshwater production and storm mobility in one offshore platform. The engineering question is whether all of those physical flows and interfaces can reconcile in the same 100 MW system.
A floating data centre that generates its own electricity from the ocean, cools itself with seawater, produces drinking water for a coastal community and can sail away when a hurricane approaches is almost tailor-made for the current AI data center hype bubble. Optimal Transit’s Kraaken concept is ambitious even by … [continued]
Electric car choice is expanding rapidly thanks to EU clean car targets, but weakening the 2030-35 targets would put affordable models and Europe’s position in the global EV race at risk. European drivers are gaining access to a rapidly expanding range of more affordable electric cars, protecting drivers from Europe’s … [continued]
