California could generate enough electricity to power 270,000 homes by putting solar panels in the empty land next to highway interchanges in just 3 Southern California counties, according to a new report released today by Environment California and The Ray.
There is a lot of “dead” space between highways, which is currently not used for much of anything. It’s not a usable space for wildlife, either, due to the proximity of so many cars.
But what it does get is a lot of sun, especially in Southern California, where there are a lot of highways and a lot of sun.
The report highlights the benefits of using this empty land beside highways for electricity generation and totals up the potential energy available from all suitable areas in the counties of Los Angeles, San Diego, and Ventura.
And there is a lot of potential space combined across these three counties. Every highway interchange and every offramp will generally have some space for an installation like this. Here are some maps of potential sites examined by the report:
Put together, it’s a total of almost a gigawatt of potential solar power just from empty land.
Better yet, these locations are often near transmission lines and are already owned by the state, which makes developing the space for large solar projects easier than contracting or leasing with several property owners for land, building transmission lines to virgin desert areas, and so on.
Here’s an example of just one highway interchange in San Diego next to State Route 163:
This installation would have 1.86 MW of capacity, enough to power 180 homes. And that’s just one interchange, with many more that are ripe for these opportunities.
While the analysis covered just three counties, those counties are rather sprawling and populated with many people and highways, meaning there are plenty of highway interchanges covered by the report’s area.
But other counties with plenty of sun and plenty of highways, like Orange, San Bernardino, and Santa Clara, were not covered. Nor were the rest of California’s 58 counties. So, if the state were to find opportunities in every county, there would be far more free energy available.
There is currently a bill working its way through California’s legislature, known as SB49, introduced by Senator Josh Becker, who represents San Mateo and Santa Clara counties. Environment California has a page where Californians can contact their representatives and ask them to support the bill.
Roadside solar outside Portland, OregonRoadside solar in Augusta, Maine
This is just one of the areas in which Environment California has advocated for solar panels. Another analysis shows that 5 million homes could be powered by putting solar on the roofs of warehouses in the state (and surely the warehouses themselves as well), allowing us to turn unproductive flat roofspace into a useful energy generation opportunity without having to clear additional land for solar farms. Add in parking lots and superstores, and you could make a pretty big dent in emissions from electricity generation without a whole lot of effort.
FTC: We use income earning auto affiliate links.More.
While much of the Western world is still figuring out how to get more people on electric bikes, China just flipped a switch, and the results are staggering. Thanks to a generous nationwide trade-in program rolled out around six months ago, China has seen an explosive surge in electric bicycle sales, with over 8.47 million new e-bikes hitting the road in the first half of 2025 alone.
The program, which offers subsidies to riders who trade in their old, often outdated electric bikes for newer, safer, and more efficient models, has sparked a new e-bike sale boom in a country already dominated by e-bike travel. In major provinces like Jiangsu, Hebei, and Zhejiang, over one million new e-bikes were sold in each region in just six months. That’s a tidal wave of e-bike sales.
The incentives vary depending on location and the model being traded in, but for many consumers, the subsidies cover a substantial portion of a new e-bike’s price – enough to turn a “maybe next year” purchase into a “right now” upgrade. And these aren’t just budget bikes either. The program has driven demand for higher-quality models with better batteries, safer braking systems, and more reliable electronics, accelerating both adoption and innovation across the industry.
The move has proven successful in replacing the millions of older models with lower-quality lithium-ion batteries that had posed safety risks around the country. Instead, China has pushed for higher-quality lithium-ion batteries, a return to a newer generation of higher-performance AGM batteries, and even interesting new sodium-ion battery options.
Advertisement – scroll for more content
Most e-bikes in China look more like what we’d consider seated scooters
According to China’s Ministry of Commerce, more than 8.4 million consumers have participated in the e-bike trade-in program so far, contributing to a sales increase of 643.5% year-over-year and more than doubling sales month-over-month. Meanwhile, production of new electric bicycles rose by nearly 28%, as manufacturers scrambled to meet demand. The sales boosts have already been seen in the financial reports of major industry players like NIU.
And it’s not just the big players benefiting – over 82,000 small independent e-bike dealers reported average sales increases of ¥302,000 (around US $42,000), giving a serious boost to local economies.
What’s particularly striking here is how fast this happened. The program was officially launched late last year as part of a broader effort to stimulate domestic consumption and phase out outdated vehicles and appliances. But while most analysts expected gradual growth, the e-bike sector responded much more quickly. In less than a year, the trade-in subsidies have reshaped the electric bicycle market, creating a consumer-driven boom that shows no signs of slowing.
For those of us watching from outside China, it’s hard not to wonder what might happen if other countries tried something similar. While most families in Chinese cities already own an electric bike and thus see this as an opportunity to trade it in for a newer model, Western countries like the US are still figuring out how to stimulate commuters into buying their first e-bike.
It’s too soon to know exactly how long the boom will last or whether the momentum will carry into 2026 and beyond. We’ve seen bicycle industry bubbles grow and burst before. But one thing’s clear: with the right incentives, even modest ones, it’s possible to ignite real, large-scale change. China just proved it with nearly 8.5 million new e-bikes to show for it.
And if you’re wondering what it looks like when a country takes electric micromobility seriously, this is it.
FTC: We use income earning auto affiliate links.More.
Today was the official start of racing at the Electrek Formula Sun Grand Prix 2025! There was a tremendous energy (and heat) on the ground at NCM Motorsports Park as nearly a dozen teams took to the track. Currently, as of writing, Stanford is ranked #1 in the SOV (Single-Occupant Vehicle) class with 68 registered laps. However, the fastest lap so far belongs to UC Berkeley, which clocked a 4:45 on the 3.15-mile track. That’s an average speed of just under 40 mph on nothing but solar energy. Not bad!
In the MOV (Multi-Occupant Vehicle) class, Polytechnique Montréal is narrowly ahead of Appalachian State by just 4 laps. At last year’s formula sun race, Polytechnique Montréal took first place overall in this class, and the team hopes to repeat that success. It’s still too early for prediction though, and anything can happen between now and the final day of racing on Saturday.
Congrats to the teams that made it on track today. We look forward to seeing even more out there tomorrow. In the meantime, here are some shots from today via the event’s wonderful photographer Cora Kennedy.
You’re reading Electrek— experts who break news about Tesla, electric vehicles, and green energy, day after day. Be sure to check out our homepage for all the latest news, and follow Electrek on Twitter, Facebook, and LinkedIn to stay in the loop. Don’t know where to start? Check out our YouTube channel for the latest reviews.
The numbers are in and they are all bad for Tesla fans – the company sold just 5,000 Cybertruck models in Q4 of 2025, and built some 30% more “other” vehicles than it delivered. It just gets worse and worse, on today’s tension-building episode of Quick Charge!
We’ve also got day 1 coverage of the 2025 Electrek Formula Sun Grand Prix, reports that the Tesla Optimus program is in chaos after its chief engineer jumps ship, and a look ahead at the fresh new Hyundai IONIQ 2 set to bow early next year, thanks to some battery specs from the Kia EV2.
New episodes of Quick Charge are recorded, usually, Monday through Thursday (and sometimes Sunday). We’ll be posting bonus audio content from time to time as well, so be sure to follow and subscribe so you don’t miss a minute of Electrek’s high-voltage daily news.
Advertisement – scroll for more content
Got news? Let us know! Drop us a line at tips@electrek.co. You can also rate us on Apple Podcasts and Spotify, or recommend us in Overcast to help more people discover the show.
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.
FTC: We use income earning auto affiliate links.More.