You’re out of free articles.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
Sign In or Create an Account.
By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy
Welcome to Heatmap
Thank you for registering with Heatmap. Climate change is one of the greatest challenges of our lives, a force reshaping our economy, our politics, and our culture. We hope to be your trusted, friendly, and insightful guide to that transformation. Please enjoy your free articles. You can check your profile here .
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Subscribe to get unlimited Access
Hey, you are out of free articles but you are only a few clicks away from full access. Subscribe below and take advantage of our introductory offer.
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Create Your Account
Please Enter Your Password
Forgot your password?
Please enter the email address you use for your account so we can send you a link to reset your password:
Whatever your motivation for buying an electric vehicle, here’s the thing: The first day you own one, you’re going to love it.
Forget the fears that come with a new technology, the negativity that stems from the politicization of EVs ownership, or the dead-and-buried stereotype that EVs are slow and boring rides for greenies only. Electric cars are zippy and fun because, unlike gas cars, they can produce a ton of torque from a resting stop. After a lifetime of listening to a car rattle and roar, I can say from experience that you’ll find driving in electric silence to be a revelation. An EV owner wakes up every morning with the equivalent of a full tank of gas because their home is their gas station.
Want a piece of this bliss? If so, then read on.
Brian Moody, an executive editor at Cox Automotive (which owns Kelly Blue Book) and an author specializing in transportation, automotive, and electric cars.
Joseph Yoon, consumer insights analyst for the automotive agency Edmunds.
Loren McDonald, CEO of EVAdoption, which provides data analysis and insights about the electrification of the car industry.
“That’s who the PHEV is for,” Moody told me. “You can do your errands around town with 30 to 40 miles, and when the battery runs out, you just keep driving.”
Ask nearly any EV expert and you’ll hear the same thing: “People don’t drive nearly as far as they think they do,” Moody said. Most of us put the vast majority of miles on our cars within a few dozen miles of our homes, running kids around town or driving to work. You’ll use up a small amount of your battery by the time you get home, plug in, and wake up the next day fully charged. Road trips may seem daunting to the uninitiated, but the interstates are now lined with fast-chargers and the number of them is growing quickly.
Building an EV generates more carbon emissions than building a gas car, a difference that’s due to mining and creating materials for the battery. But that’s just manufacturing a vehicle; once it’s built, it has a decade or two of driving ahead of it. A combustion car constantly spews carbon as it burns fossil fuels, which dwarfs the amount it takes to make an EV. Don’t forget: An electric car gets greener as the grid gets greener. The more clean energy is added to the world’s electrical supply, the better EVs get in comparison to gas cars. You’d need to live in a state with an especially dirty energy grid, such as Wyoming or West Virginia, for an EV not to be a much better option than driving around on gasoline. Furthermore, McDonald said, you can forget the propaganda that suggests EV batteries wind up stacked in a landfill somewhere when the cars meet their end. A growing number of companies are ready to recycle EV batteries and retrieve the precious metals therein, while it’s likely that lots of batteries will find a second life in applications such as grid storage.
It’s true that price has long been one of the biggest barriers to EV adoption. Even though tax incentives — together with savings on fuel and maintenance — make many electrics cost-competitive with their gas counterparts in the long term, their high sticker price keeps many people away. But more electric models are beginning to creep down toward the cost of entry-level gasoline cars.
As with buying an old-fashioned gas-guzzler, going to the dealership to get an EV means dealing with pushy salespeople, confusing specs, and haggling over the price. The process can be doubly frustrating for the EV shopper given the relative unavailability of some electric models and reports of some car salespeople who know frustratingly little about the very EVs they hock.
If you live in a market where EVs have taken hold, like the San Francisco Bay Area, expect knowledgeable salespeople who can walk you through the EV buying process. If you live someplace where few electrics are sold, then the experience may be hit-or-miss. Do your own research, and prepare to be your own advocate.
For a long time, things were simple: If you bought an electric vehicle, then you could take a $7,500 credit on your taxes for that year. But things have gotten murkier in the past year or two — in a bid to protect domestic manufacturing, Congress passed new rules stating that a certain amount of the car and its components had to be made in the U.S. to qualify, leaving a confusing, shifting picture of which EVs qualify and which don’t. (To wit: Many Teslas qualify, Hyundais and Kias don’t, while Rivians receive only half the credit because they’re so expensive.) The upside of the changed rules is that buyers are now allowed to get tax credits on leasing an EV, or to receive the credit as an up-front discount on their new EV. Many states have generous incentives, too. Washington, for example, will give up to $9,000 in rebates for buying an EV. “There are enormous discounts on basically every EV on the market, even before we count the $7,500 with the federal tax credit,” Yoon told me.
Before you take the plunge, take a moment and really think about how you drive — because lots of people overestimate what they need. Maybe even keep notes and check your mileage every day for a week or two to find out how much you really use the car versus how much you think you do. If you find that you could get around town on a few dozen miles of charge but road trip every other weekend, then you might consider a plug-in hybrid. If you’ve already got a gas car or hybrid to handle longer trips and are shopping for a second vehicle, there’s no reason not to go for an EV, assuming you can afford one. If you just need basic transportation to take you a few miles to work, hate the idea of ever buying gas again, and want to spend as little as possible … maybe you should get an e-bike.
A refresher: When you buy a car, you typically put a downpayment on the vehicle, and then borrow enough money from the bank to pay off the rest of its price (plus interest and sales tax) in monthly payments over the course of four, five, or even more years. Leasing is like renting an apartment. You put down a deposit and then pay monthly over the course of the lease, typically three years. But like your rent, those payments don't go toward owning the car. At the end of the lease, you give it back. With EVs especially, there are some serious advantages and drawbacks to each approach you should keep in mind.
If you live in a century-old house that would need to have significant rewiring done to accommodate an EV charger, then installing a Level 2 charger might be too expensive, so you might want to stick to a plug-in hybrid. (Again, more on charging below.) Does your office have a charger? If you live in an apartment, does the parking lot have chargers?
“How you refuel your EV is similar to how you charge your smartphone — you do it either throughout the day or at night before you go to bed. You plug in, you wake up, and it's full,” McDonald said.
“The first thing I tell people? You should probably get a Tesla,” Moody told me. Still, Elon Musk’s electric car company isn’t the darling it once was. Tesla has squandered a huge lead in the EV market by focusing on vanity projects like the Cybertruck and lost a chunk of public goodwill through Musk’s misadventures in politics and social media. But the company still has an ace up its sleeve with the Supercharger network, which is better and more reliable than the competition. This will change in the coming years, as the other automakers have adopted Tesla’s plug and their future cars will be able to use Superchargers. But for now, it’s a major advantage that makes owning a Tesla a lot less stressful than trying to get by with a competitor’s EV, especially if you make road trips. For this reason, Tesla’s Model Y — the best-selling car in the world in 2023, and the best-selling EV in America — remains a compelling choice for anyone who wants an EV to be their only car and have it go nearly anywhere.
Don’t want Musk to get your money? Fret not. EV offerings from legacy car companies and new automakers are leaps and bounds better than they were five years ago when Tesla took over the industry. Hyundai and its subsidiary Kia, in particular, have outpaced other carmakers in offering fun and practical EVs. The new Kia EV9 is the best choice for buyers who want a true EV with three rows so they can accommodate six or seven passengers, and it’s a sleek-looking vehicle for its size. Its $57,000 starting price is not cheap, but it’s probably the best deal you can get for a true three-row electric vehicle right now.
The Ioniq 5 is a quirky mashup of a crossover and a hatchback. It’s got enough space to be practical as a family vehicle, but its dimensions aren’t quite like anything else on the market. In the EV-laden part of Los Angeles where I live, it’s the most common non-Tesla electric I come across.
Introduced in 2021, the F-150 Lightning’s game-changing feature is two-way, or “bidirectional,” charging — you can plug into your house and use the energy stored in the truck’s battery to back up your home’s power supply in case of a blackout. Chevy is following suit by putting this tech into the Silverado EV. But even if you’re just driving and not powering your home, the Lightning is impressive — its standard battery produces 452 horsepower, but that number can climb to 580 on more expensive versions, and both offer a ton of torque.
Today’s Rivians are luxury lifestyle vehicles, but they offer a lot for all that cash. The R1 vehicles are spacious and well-appointed on the interior while offering lots of power and range for the off-road lifestyle the brand projects — the high-end version of the SUV gets 410 miles of range with 665 horsepower. Other excellent luxury EVs at the top end of the market include the Lucid Air and Mercedes EQS, but the Air has the space limitations of a sedan (though it is a large one) and the Benz is likely to cost more than $100,000. Rivians are pricey, but they’re not that pricey.
The people’s affordable EV champion, the Chevy Bolt, got the ax last year, but GM has promised to bring it back for people who want a smallish EV that doesn’t cost a fortune. In the meantime, the “SE” version of the Hyundai Kona EV, a small SUV, starts around $36,000 and gets 261 miles of range. (There’s an even cheaper version with 200 miles of range, but trust me: Don’t buy any new EV with less than 250 miles of range — e.g. the Nissan Leaf, Fiat 500, Mini Cooper, or Subaru Solterra — unless you really, really like it.) Chevy finally electrified its huge-selling SUV and rolled out the Equinox EV; while it starts at $41,000 now, GM promises a $35,000 version soon to come.
There are a wide variety of PHEVs that are worth a look, but an especially compelling option is the Toyota Prius Prime. The entire Prius family of hybrids and plug-in hybrids just got a facelift for 2023 that is miles ahead of the frumpy, aging look the car previously had. And where the previous Prius Prime was limited to a puny 25 miles of electric range, today’s will do 44 — enough for lots of people to do their daily city driving without burning any gas.
Some vocabulary to get you started:
Since charging at home is the make-or-break feature that will make your electrified life more convenient than your gas-burning days, your first order of business is getting a Level 2 charger installed. You’re going to need an electrician for this one, since it requires stepping up the voltage (and might require installing a new breaker panel or running new wiring, depending upon your home). Be sure to get multiple quotes so you can compare work estimates and prices.
“When you buy from an EV dealer or Tesla or whomever, they might refer you to an electrician or an installer. There are companies that have services and websites where they do all the work for you. You plug in your address and information, and they'll recommend and refer you to an installer,” McDonald said.
How much this’ll cost you varies by where you live and how much work it’ll take to set up your home, but the national average is $1,200 to $1,500, McDonald says. The exception could be older houses that were not set up for anything close to the electrical load it takes to charge a car, so if you own a hundred-year-old home in New England with lots of original wiring, you might be in for a shock. Don’t forget, however, that lots of incentives are available for setting up EV infrastructure at your home. You might be eligible for a tax credit equal to 30 percent of the cost up to $1,000.
As far as charging away from home? Most EVs automatically show nearby charging stations on their touchscreen navigation systems and will route you to the necessary stops along a long drive. Teslas will even show you how many stalls are available at a given Supercharger and how many other cars are en route. As an EV driver, you’ll get to know the fast-chargers in your neighborhood and along your familiar highways, but you’ll also get to know sites like Plugshare that will display every charger of every speed and every plug throughout that country — invaluable for planning a journey.
As you get comfortable with your own driving habits, you’ll figure out whether you need to expand your choices by purchasing adapters or dongles that let your car charge at different kinds of plugs. For example, today’s non-Tesla EVs eventually will be able to charge at Tesla superchargers, but because they are still being built with the competing CCS standard, you’d need an adapter to allow today’s Ford Mustang Mach-E to use a Tesla plug. I have an adapter in my Tesla Model 3 to use the “J1772” plugs you find on the Level 2 charger at the grocery store, and I bought one for the NEMA 14-50 plugs common at an RV campsite — just in case I really get into trouble out there.
When a car brakes to slow down, energy is lost. But in an EV, some of it can be recaptured via regenerative braking, a system that captures the energy from waste heat and puts it back into the battery. This allows for an experience unavailable to the gasoline motorist called one-pedal driving: Take your foot off the accelerator and the car immediately slows itself down via the regenerative braking system. When I drive my Tesla Model 3, I only hit the brake pedal when I need to slow down in a big hurry; otherwise, I let off the accelerator and let the car coast to a stop. This system can add several miles of range back onto the battery if you’re coasting out of the mountains on a steep downgrade.
A word of warning: Many people don’t like regenerative braking, at least at first, because it feels jerky to have the car instantly slow itself down when you let off the accelerator. But trust me, you’ll get better and better at letting off the pedal slowly so you don’t make your passengers nauseous. It’s also possible in many vehicles to turn down the regen so it’s less aggressive.
For starters, think of all the car vocabulary you won’t need anymore. An EV’s power output can be measured in torque and horsepower, but say goodbye to combustion-specific vernacular like spark plugs, cylinders, pistons, or liters as a measure of engine size (unless you get a plug-in hybrid). No more mufflers, no exhaust or timing belts. An EV has no use for miles per gallon, though carmakers and the EPA try to measure an electric car’s efficiency in miles per gallon equivalent as a way to compare them with gas cars.
As the months and years go by, you’ll appreciate a number of differences in the EV owner’s lifestyle. Drivers needn’t bother with remembering the pesky oil change every 3,000 miles, nor with worrying about the lifespans of thousands of moving parts that come with internal combustion. (On the other hand, today’s EVs burn through tires faster than gas cars do because of their weight and their performance.)
There’s a lot more to learn, of course. Just remember: The first time you bypass the gas station — with its stinky fumes and pesky commercials screaming at you — to refuel your car in the comfort of your home, you’ll wonder why you waited so long.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
Big electric vehicles need big batteries — and as electricity gets more expensive, charging them is getting pricier.
As the cost to charge the Rivian R1S ticked up over $50, then $60, I couldn’t help but recall those “Pain at the Pump” segments from the local news. Perhaps you’ve seen the familiar clips where reporters camp out at the local filling station to interview locals fed up with high gas prices. I watched the Rivian charger’s touchscreen as the cost to refuel my weekend test-driver ballooned and imagined the chemically dewrinkled TV anchors doing their first story on “Pain at the Plug.”
I should have been ready for this. Back in the 90s, I remember the shock of filling my parents’ gas-guzzling Ford Explorer, which cost two or three times as much as it took to fill my dinky Escort hatchback. The story isn’t the same in the age of electric vehicles, but it rhymes. It rarely costs more than $20 to top off the small battery in my Tesla Model 3, so my eyes popped a little at the price of refueling a massive EV.
This isn’t a one-to-one comparison, of course: the R1S also goes farther on a charge because of how much energy its huge battery can store, so it’s a bit like comparing a compact car to a Ford F-150 and its 36-gallon gas tank — you’re spending much, much, more, but you’re going a little farther, too. Still, it is a reminder that size matters, whether you’re talking about gas or electric. Under a Trump administration where electricity prices are forecasted to spike, EV shoppers might find themselves thinking the way Americans often have during oil crises and gas price hikes: taking a long look at smaller and lighter vehicles to save money.
The EV weight problem is well-known. To summarize: EVs tend to be weighty because of their massive battery packs. Making electrified versions of the big trucks and SUVs Americans love amplifies the problem. You need very big batteries to store enough energy to give them a decent range, and adding a large lithium-ion unit along the bottom adds even more girth.
Weighty EVs have raised concerns over public safety, since they could be more dangerous to pedestrians, cyclists, and other cars during collisions. Their bulk leads to prematurely worn-out tires, which potentially creates more tire dust and forces drivers to replace their rubber sooner. Bigger batteries need larger amounts of rare metals to make them. And now, in a world of expensive electricity, a heavy EV could hammer a driver’s wallet.
Those of us raised on miles per gallon must learn a new statistical vocabulary to think about the efficiency of EVs. The simplest stat is the number of miles traveled per kilowatt-hour of energy. Lucid, the luxury EV-only startup, has been gunning for the efficiency title with its streamlined Air sedan and has bragged about making 5 miles per kilowatt-hour. By comparison, the current Tesla Model 3 makes around 4 miles per kilowatt-hour, while a big, heavy Rivian gets somewhere in the 2s. (Using a conversion formula from the Environmental Protection Agency to calculate the energy present in a gallon of gas shows that a relatively efficient sedan like the Honda Civic scores around 1, by Lucid’s math, and a big pickup truck even worse.)
These numbers are context-dependent, of course. Just as a gas car or hybrid is judged by its city, highway, and combined mileage, an electric car goes much farther at slow speeds than it does on the highway. A big three-row Hyundai Ioniq 9 EV that can deliver 3 miles or more per kilowatt-hour at slower speeds made right around 2.0 when I sped down Interstate 5, the AC blasting to keep the baby comfortable on a hot California day. The Supercharger bill was enough to make me miss my little Tesla.
The dollars-and-cents calculation is a little different with all-electric vehicles than it was in the all-gasoline era. Drive a gas car and you pay whatever the gas station charges; there is little recourse beyond knowing which service station in your city is the cheapest. With EVs, however, most drivers do their charging primarily at home, where the cost per kilowatt-hour for residential energy is much lower than the inflated cost to refill the battery at a public fast-charger. (Even California’s high cost for home electricity amounts to just half of what some EV fast-chargers cost during afternoon and evening times of peak demand.) But there’s no way to beat the system entirely. Drive a giant, electron-guzzling EV and you’ll be much more vulnerable to a spike in electricity prices.
And it’s not just the cost of recharging a battery — size also matters a lot for the up-front cost of the EV. Americans have become accustomed to paying a premium for larger vehicles, but for combustion cars, this is simply a market phenomenon. It doesn’t cost that much more to build a crossover instead of a sedan, or to give a vehicle a bigger gas tank. The car companies know you’ll pay thousands more for a Toyota RAV4 than for a Corolla. With electric vehicles, however, you’re paying for size in a much more direct fashion. That huge battery needed to move a Rivian is simply much more expensive to build than the one in a Chevy Bolt.
Carmakers are now confronting this problem as they try to crack the affordable EV problem. A subtle detail in Ford’s big announcement last week that it would build a $30,000 mid-size electric pickup is that the vehicle would have a battery perhaps half as big as the one in the F-150 Lightning EV and four times smaller than the biggest one you can get with Chevy’s Silverado EV.
Building a truck with a relatively small battery will undoubtedly slash costs compared to the monster units we’ve seen in full-size electric pickups. It also means that Ford will have to be especially conscious of the vehicle’s weight to maximize the range that can be squeezed out of those few kilowatt-hours. Until battery production costs tumble, that is the way to the more-affordable EV — do more with less.
On COP30 jitters, a coal mega-merger gone bust, and NYC airport workers get heated
Current conditions: Hurricane Erin is lashing Virginia Beach with winds up to 80 miles per hour, the Mid-Atlantic with light rain, and New York City with deadly riptides • Europe’s wildfires have now burned more land than any blazes in two decades • Catastrophic floods have killed more than 300 in Pakistan and at least 50 in Indian-administered Kashmir.
Offshore oil rigs in California. Mario Tama/Getty Images
Two weeks after de-designating millions of acres of federal waters to offshore wind development, the Trump administration Tuesday set a new schedule for auctions of oil-and-gas leases in the Gulf of Mexico and Alaska’s Cook Inlet, stretching all the way out to 2040. In a press release, Secretary of the Interior Doug Burgum cited the recently passed One Big Beautiful Bill Act as a “landmark step toward unleashing America’s energy potential” by “putting in place a bold, long-term program that strengthens American Energy Dominance, creates good-paying jobs and ensure we continue to responsibly develop our offshore resources.”
The lease plan may violate federal law, however, as the administration has not conducted environmental analyses or held public hearings before putting the auctions on the calendar. “There’s no world in which we will allow the Trump Administration to hold dozens of oil sales in public waters, putting Americans, wildlife, and the planet in harm’s way, without abiding by the law,” Brettny Hardy, an oceans attorney at the environmental group Earthjustice, said in a statement. “Even with its passage of the worst environmental bill in U.S. history, the Republican-led Congress did not exempt these offshore oil sales from needing to comply with our nation’s environmental statutes.”
In an open letter published Tuesday, André Corrêa do Lago, the veteran Brazilian diplomat leading the next United Nations climate summit, warned that “geopolitical and economic obstacles are raising new challenges to international cooperation — including under the climate regime.” The letter comes after UN-sponsored talks over a plastics treaty collapsed last week, with the U.S. joining fellow oil producers Russia, Saudi Arabia, and Iran in standing athwart more than 100 other countries that supported a deal to curb production of new disposable plastics.
The climate summit, known as COP30, is set to take place in the Brazilian Amazon city of Belém in November. It will be the first global climate confab since President Donald Trump returned to office and, on his first day back in the White House, kicked off the process to withdraw the U.S. from the 2015 Paris climate deal.
Get Heatmap AM directly in your inbox every morning:
Peabody Energy backed out of its $3.8 billion agreement to buy Anglo American’s coal mines following the unexpected closure of the deal’s flagship mine. On Tuesday, the largest U.S. coal producer said that an explosion last March at Anglo America’s Moranbah North mine in Australia resulted in a “material adverse change” to its deal. The move dealt a major blow to London-based Anglo American, which had planned to use the sale as part of a broader restructuring to fend off a hostile takeover attempt by rival BHP. Anglo American CEO Duncan Wanblad said he was “very disappointed,” according to the Financial Times, and the company said it would “seek damages for the wrongful termination.”
The deal comes amid a global comeback for the main fuel blamed for climate change. As my colleague Matthew Zeitlin wrote last month, “the evidence for coal’s stubborn persistence globally has been mounting for years. In 2021, the International Energy Agency forecast that by 2024, annual coal demand would hit an all-time high of just over 8,000 megatons. In 2024, it reported that coal demand in 2023 was already at 8,690 megatons, a new record; it also pushed out its prediction for a demand plateau to 2027, at which point it predicted annual demand would be 8,870 megatons.”
The California startup ChemFinity got a big boost on Tuesday, raising $7 million in a funding round led by At One Ventures and Overton Ventures. The company, spun out from the University of California, Berkeley, claims its critical mineral recovery system will be three times cheaper, 99% cleaner and 10 times faster than existing approaches currently found in the mining and recycling industries. “We basically act like a black box where recyclers or scrap yards or even other refiners can send their feedstock to us,” Adam Uliana, ChemFinity’s co-founder and CEO, told Heatmap’s Katie Brigham. “We act like a black box that spits out pure metal.”
At a time when record heat is regularly halting flights on sweltering tarmacs, service workers at New York City’s LaGuardia and John F. Kennedy airports are slated to protest on Wednesday to demand new workplace protections from extreme heat. The workers, many of whom handle cargo and ramp services for major airlines, said in a press release that extreme heat and lack of access to water, rest breaks, and proper training threatened more incidents of heat illness. One worker claimed to have recently lost consciousness inside the cargo hold of a plane due to heat. The members of chapter 32BJ of the Service Employees International Union will be joined by State Assemblymembers Steven Raga and Catalina Cruz in their demonstration, which is scheduled to begin at 10 a.m. near LaGuardia’s Old Marine Terminal.
I swear by the shvitz. My great grandfather, after whom I’m named, went to the same Russian bathhouse in Manhattan that my cousin, brother, and I visit regularly to enjoy the sauna and cold plunge. Turns out amphibians feel the same. A researcher at Macquarie University in Sydney found that frogs could fight off the deadly chytrid fungal infection plaguing the green and golden bell frog by sitting in “frog saunas.” Spending a few hours a day in warm enclosures that reach temperatures higher than 83 degrees Fahrenheit for a week or less is all that’s needed to kill off the fungus.
Rob and Jesse quiz Mark Rothleder, chief operations officer at the California Independent System Operator.
So far on Shift Key Summer School we’ve covered how electricity gets made and how it gets sold. But none of that matters without the grid, which is how that electricity gets to you, the consumer. Who actually keeps the grid running? And what decisions did they make an hour ago, a day ago, a week ago, five years ago to make sure that it would still be running right this second?
This week on Shift Key, Rob and Jesse chat with Mark Rothleder, senior vice president and chief operating officer of the California Independent System Operator, which manages about 80% of the state’s electricity flow. As the longest-serving employee at CAISO , he’s full of institutional knowledge. How does he manage the resource mix throughout the day? What happens in a blackout? And how do you pronounce CAISO in the first place?
Shift Key is hosted by Jesse Jenkins, a professor of energy systems engineering at Princeton University, and Robinson Meyer, Heatmap’s executive editor.
Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, YouTube, or wherever you get your podcasts.
You can also add the show’s RSS feed to your podcast app to follow us directly.
Here is an excerpt from our conversation:
Jesse Jenkins: To make this a little bit more concrete, walk through how you’re orchestrating the generation fleet. What is the typical mix of resources that you’re calling on at different times of day, on a typical California day. Let’s start at 8:00 a.m. and, you know, move through the day.
Mark Rothleder: So if it’s like today, it’s a moderate summer day, there would be in the. There would be some thermal resources, gas resources that would already be on, probably near their minimum load, which is probably about 30%, 40% of their full operating capability. And they would be sitting there waiting for dispatch instructions as the load increased.
And I talk about the morning because people start turning lights on. This is when the load starts to increase, in that morning hour. So to balance the system as that load increases relatively quickly, you’re going to have a combination of probably solar starting to come up and produce, naturally, because the sun is coming out. You may have a little bit of wind production starting to increase because the wind’s starting to blow because the temperatures and the system are driving that wind. If that’s not enough energy, we’re dispatching probably thermal resources, probably doing some exchanges through the Western Energy Imbalance Market with the neighbors.
And then you get to about probably 9 o’clock, 10 o’clock ,and things stabilize. And then what ends up happening, at least in our system, is you start to see solar production continue to go up, but the load is not increasing. It’s kind of flattened out. We start to probably see some backing off of thermal resources that were brought up during that morning load pull. And now we’re starting to back off on those, and maybe even getting to the point where surplus energy in the middle of the day — we’re exchanging and maybe exporting some of our energy to our neighbors because we have surplus. We’re probably starting to see batteries charge up in the middle of the day because now we’ve got this cheap energy. And this is going to probably go on until about 4 o’clock, 5 o’clock in the afternoon, when the traditional peak of the day is, and this is when the highest gross load is.
And then we start to see another dynamic happen, and that is, at least in our system, the sun starts to set and then the solar production starts to decrease. What’s interesting about that is, as the solar production decreases, it happens over about a three-, four-hour period, and it’s a relatively fast ramp out of those solar resources. The load is not dropping. And in fact, if you think about —
Jenkins: It’s rising often, right?
Rothleder: It’s actually still rising because some of the load that was previously served by behind the meter rooftop solar, that load is also coming back on the system because the solar production is decreasing. So again, to rebalance the system and keep that balanced and straight, we have to start ramping up a couple things. We start to turn, maybe, what was exports around, and we start importing energy from our neighbors. We start discharging the batteries that we just charged up earlier. And to the extent we still need other energy, we probably have a combination of thermal gas resources that we’re bringing them off their minimum load, dispatching them up during the day, and probably some hydro resources that are able to be dispatched during the day.
Between 6 p.m. and 7 p.m. we hit what we call our net peak. We call it net peak because it’s the gross load minus wind and solar production. And that tends to be the most critical time when we need — since the ramp out of wind and solar, more solar, that kind of is the highest where we need other resources to be available and dispatched. And so once we get through that net peak, come around 6:30, 7 o’clock, things just start to gradually turn around. And then we’re ramping out over the rest of the day the thermal resources, the interchange, and the hydro resources that we previously dispatched up to get to that net peak. And this all starts over again the next morning.
Mentioned:
Jesse’s slides on long-run equilibrium and electricity markets
Shift Key Summer School episodes 1, 2, 3, and 4
Also on Shift Key: Spain’s Blackout and the Miracle of the Modern Power Grid
This episode of Shift Key is sponsored by …
Accelerate your clean energy career with Yale’s online certificate programs. Gain real-world skills, build strong networks, and keep working while you learn. Explore the year-long Financing and Deploying Clean Energy program or the 5-month Clean and Equitable Energy Development program. Learn more here.
Join clean energy leaders at RE+ 25, September 8–11 in Las Vegas. Explore opportunities to meet rising energy demand with the latest in solar, storage, EVs, and more at North America’s largest energy event. Save 20% with code HEATMAP20 at re-plus.com.
Music for Shift Key is by Adam Kromelow.