Rooftop solar: How homeowners should do the math on the climate change investment
Solar panels create electricity on the roof of a house in Rockport, Massachusetts, U.S., June 6, 2022. Picture taken with a drone.
Brian Snyder | Reuters
When Josh Hurwitz decided to put solar power on his Connecticut house, he had three big reasons: To cut his carbon footprint, to eventually store electricity in a solar-powered battery in case of blackouts, and – crucially – to save money.
Now he’s on track to pay for his system in six years, then save tens of thousands of dollars in the 15 years after that, while giving himself a hedge against utility-rate inflation. It’s working so well, he’s preparing to add a Tesla-made battery to let him store the power he makes. Central to the deal: Tax credits and other benefits from both the state of Connecticut and from Washington, D.C., he says.
“You have to make the money work,” Hurwitz said. “You can have the best of intentions, but if the numbers don’t work it doesn’t make sense to do it.”
Hurwitz’s experience points up one benefit of the Inflation Reduction Act that passed in August: Its extension and expansion of tax credits to promote the spread of home-based solar power systems. Adoption is expected to grow 26 percent faster because of the law, which extends tax credits that had been set to expire by 2024 through 2035, says a report by Wood Mackenzie and the Solar Energy Industry Association.
Those credits will cover 30 percent of the cost of the system – and, for the first time, there’s a 30 percent credit for batteries that can store newly-produced power for use when it’s needed.
“The main thing the law does is give the industry, and consumers, assurance that the tax credits will be there today, tomorrow and for the next 10 years,” said Warren Leon, executive director of the Clean Energy States Alliance, a bipartisan coalition of state government energy agencies. “Rooftop solar is still expensive enough to require some subsidies.”
California’s solar energy net metering decision
Certainty has been the thing that’s hard to come by in solar, where frequent policy changes make the market a “solar coaster,” as one industry executive put it. Just as the expanded federal tax credits were taking effect, California on Dec. 15 slashed another big incentive allowing homeowners to sell excess solar energy generated by their systems back to the grid at attractive rates, scrambling the math anew in the largest U.S. state and its biggest solar-power market — though the changes do not take effect until next April.
Put the state and federal changes together, and Wood Mackenzie thinks the California solar market will actually shrink sharply in 2024, down by as much as 39%. Before the Inflation Reduction Act incentives were factored in, the consulting firm forecast a 50% drop with the California policy shift. Residential solar is coming off a historic quarter, with 1.57 GW installed, a 43% increase year over year, and California a little over one-third of the total, according to Wood Mackenzie.
For potential switchers, tax credits can quickly recover part of the up-front cost of going green. Hurwitz took the federal tax credit for his system when he installed it in 2020, and is preparing to add a battery now that it, too, comes with tax credits. Some contractors offer deals where they absorb the upfront cost – and claim the credit – in exchange for agreements to lease back the system.
Combined with savings on power homeowners don’t buy from utilities, the tax credits can make rooftop solar systems pay for themselves within as little as five years – and save $25,000 or more, after recovering the initial investment, within two decades.
“Will this growth have legs? Absolutely,” said Veronica Zhang, portfolio manager of the Van Eck Environmental Sustainability Fund, a green fund not exclusively focused on solar. “With utility rates going up, it’s a good time to move if you were thinking about it in the first place.”
How to calculate installation costs and benefits
Here is how the numbers work.
Nationally, the cost for solar in 2022 ranges from $16,870 to $23,170, after the tax credit, for a 10-kilowatt system, the size for which quotes are sought most often on EnergySage, a Boston-based quote-comparison site for solar panels and batteries. Most households can use a system of six or seven kilowatts, EnergySage spokesman Nick Liberati said. A 10-12 kilowatt battery costs about $13,000 more, he added.
There’s a significant variation in those numbers by region, and by the size and other factors specific to the house, EnergySage CEO Vikram Aggarwal said. In New Jersey, for example, a 7-kilowatt system costs on average $20,510 before the credit and $15,177 after it. In Houston, it’s about $1,000 less. In Chicago, that system is close to $2,000 more than in New Jersey. A more robust 10-kilowatt system costs more than $31,000 before the credit around Chicago, but $26,500 in Tampa, Fla. All of these average prices are as quoted by EnergySage.
The effectiveness of the system may also vary because of things specific to the house, including the placement of trees on or near the property, as we found out when we asked EnergySage’s online bid-solicitation system to look at specific homes.
The bids for one suburban Chicago house ranged as low as $19,096 after the federal credit and as high as $30,676.
Offsetting those costs are electricity savings and state tax breaks that recover the cost of the system in as little as 4.5 years, according to the bids. Contractors claimed that power savings and state incentives could save as much as another $27,625 over 20 years, on top of the capital cost.
Alternatively, consumers can finance the system but still own it themselves – we were quoted interest rates of 2.99 to 8.99 percent. That eliminates consumers’ up-front cost, but cuts into the savings as some of the avoided utility costs go to pay off interest, Aggarwal said.
The key to maximizing savings is to know the specific regulations in your state – and get help understanding often-complex contracts, said Hurwitz, who is a physician.
Energy storage and excess power
Some states have more generous subsidies than others, and more pro-consumer rules mandating that utilities pay higher prices for excess power that home solar systems create during peak production hours, or even extract from homeowners’ batteries.
California had among the most generous rules of all until this week. But state utility regulators agreed to let utilities pay much less for excess power they are required to buy, after power companies argued that the rates were too high, and raised power prices for other customers.
Wood Mackenzie said the details of California’s decision made it look less onerous than the firm had expected. EnergySage says the payback period for California systems without a battery will be 10 years instead of six after the new rules take effect in April. Savings in the years afterward will be about 60 percent less, the company estimates. Systems with a battery, which pay for themselves after 10 years, will be little affected because their owners keep most of their excess power instead of selling it to the utility, according to EnergySage.
“The new [California rules] certainly elongate current payback periods for solar and solar-plus-storage, but not by as much as the previous proposal,” Wood Mackenzie said in the Dec. 16 report. “By 2024, the real impacts of the IRA will begin to come to fruition.”
The more expensive power is from a local utility, the more sense home solar will make. And some contractors will back claims about power savings with agreements to pay part of your utility bill if the systems don’t produce as much energy as promised.
“You have to do your homework before you sign,” Hurwitz said. “But energy costs always go up. That’s another hidden incentive.”
Capable of delivering up to 1,200 kW of power to get electric commercial trucks back on the road in minutes, the new ABB MCS1200 Megawatt Charging System is part of an ecosystem of electric vehicle supply equipment (EVSE) that ABB’s bringing to this year’s ACT Expo.
ABB E-mobility is using the annual clean trucking conference to showcase the expansion of its EVSE portfolio with three all-new charger families: the field-upgradable A200/300 All-in-One chargers, the MCS1200 Megawatt Charging System for heavy-duty vehicles shown (above), and the ChargeDock Dispenser for flexible depot charging.
The company said its new product platform was built by applying a computer system-style domain separation to charger design, fundamentally improving subsystem development and creating a clear path forward for site and system expansion. In other words, ABB is selling a system with both future-proofing and enhanced dependability baked in.
“We have built a system by logically separating a charger into four distinct subsystems … each functioning as an independent subsystem,” explains Michael Halbherr, CEO of ABB E-mobility. “Unlike conventional chargers, where a user interface failure can disable the entire system, our architecture ensures charging continues even if the screen or payment system encounters issues. Moreover, we can improve each subsystem at its own pace without having to change the entire system.”
The parts of ABB’s new EVSE portfolio that have been made public so far have already been recognized for design excellence, with the A400 winning the iF Gold Award and both the A400 and C50 receiving Red Dot Design Awards.
New ABB chargers seem pretty, good
ABB says the systemic separation of its EVSE enhances both reliability and quality, while making deployed chargers easier to diagnose and repair, in less time. Each of the chargers’ subsystems can be tested, diagnosed, and replaced independently, allowing for quick on-site repairs and update cycles tailored to the speed of each systems’ innovation. The result is 99% uptime and a more future-proof product.
“The EV charging landscape is evolving beyond point products for specific use cases,” continued Halbherr. “By implementing this modular approach with the majority of our R&D focused on modular platforms rather than one-off products … it reduces supply chain risks, while accelerating development cycles and enabling deeper collaboration with critical suppliers.”
Key markets ABB is chasing
- PUBLIC CHARGING – with the award winning A400 being the optimal fit for high power charging from highway corridors to urban locations, the latest additions to the A-Series All-in-One chargers offer a field-upgradable architecture allowing operators to start with the A200 (200kW) with the option to upgrade to 300kW or 400kW as demand grows. This approach offers scalability and protects customer investment, leading to Total Cost of Ownership (TCO) savings over 10 years.
- PUBLIC TRANSIT AND FLEET – the new Charge Dock Dispenser – in combination with the already in market available HVC 360 – simplifies depot charging with a versatile solution that supports pantograph-, roof-, and pedestal charging options with up to 360kW of shared power and 150m/490 ft installation flexibility between cabinet and dispensers. The dispenser maintains up to 500A output.
- HEAVY TRUCKS – building the matching charging infrastructure for commercial vehicles and fleets represents a critical innovation frontier on our journey to electrify transportation. Following extensive collaboration with industry-leading truck OEMs, the MCS1200 Megawatt Charging System delivers up to 1,200kW of continuous power — 20% more energy transfer than 1MW systems — providing heavy-duty vehicles with purpose-built single-outlet design for the energy they need during mandatory driver breaks. To support other use cases, such as CCS truck charging, a dual CCS and MCS option will also be available.
- RETAIL – the award winning C50 Compact Charger complements the family as the slimmest charger in its category at just 9.3 inches depth, optimized for convenient charging during typical one-hour retail experiences. With its large touch display, the C50 takes the award-winning A400 experience even further — setting a new standard for consumer experience and very neatly echoing our own take on that “Goldilocks” timing zone for commercial charging.
ABB says that the result of its new approach are chargers that offer 99% plus uptime — a crucial statistic for commercial charging operations and a key factor to ensuring customer satisfaction. The new ABB E-mobility EVSE product family will be on display for the first time at the Advanced Clean Transportation Expo (ACT Expo) in Anaheim, California next week, then again at Power2Drive in Munich, Germany, from May 7-9.
Electrek’s Take
The ACT Expo is one of – if not the most important sustainable trucking event in North America, featuring all the big names in heavy trucks, construction equipment, material handling, infrastructure – even Tier 1 suppliers. Mostly, though, it’s many fleet buyers’ only chance to test drive these zero emission trucks before writing a big PO (which just makes it even more important).
Electrek will be there again this year, and we’ll be bringing you all the latest news from press events and product reveals as it happens.
SOURCE | IMAGES: ABB E-mobility.
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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Along with Tennessee Tech, Tennessee-based ultralight aircraft company Whisper Aero has secured a $500,000 grant to help advance the company’s innovative electric jet motor concept off the drawing board and onto the testing phase.
Earlier this month, the Tennessee Department of Economic and Community Development (TNECD) announced plans to award $500,000 to Tennessee Tech and Whisper Aero through the Transportation Network Growth Opportunity (TNGO) initiative.
“We look forward to using these award dollars to place students in internships working directly with Whisper Aero leaders,” said Tennessee Tech President Phil Oldham. “By learning from an electric propulsion innovator like Whisper Aero, our students will gain invaluable perspective and can take what they have learned in the classroom and apply it right here in Tennessee.”
The grant will see a Whisper Aero glider fitted with a pair of the company’s eQ250 electric-powered jet “propulsors” for UltraQuiet flight. Tennessee Tech faculty and students will carry out copper-bird ground testing to ensure the safe integration of engines, batteries, and controllers, and kickstart Tennessee Tech’s new Crossville Mobility Incubator.
Those propulsors, by the way, are super cool.
Whisper Aero’s main claim to fame is its innovative UltraQuiet WhisperDrive (above). It’s effectively an electrically spun ducted fan jet engine that uses a large number of stiff composite fan blades inside a lightweight, acoustically treated duct. With so many blades, the Whisper Aero propulsor can push more air than a conventional prop while spinning much more slowly. As such, the “blade passage frequency” moves up to more than 16,000 Hz – outside the range of most human hearing but not, supposedly, high enough to freak out the beagles.
The Whisper Aero ultralight is effectively an Aériane Swift3 glider fitted with a pair of Whisper’s eQ250 propulsors, each capable of up to 80 lbs. of thrust. The Ultralight has a wingspan of over 40 ft with a maximum L/D of 35:1 and can be stressed to a design loading of +6/-4g, making it capable of some pretty impressive acrobatic feats.
The Swift3 glider is designed for a low speed, low power cruising speed of 45–55 knots with “just” 6.5 hp. Power-off glides from a few hundred feet showed a low sink rate, and a climb rate of 1,250 ft/min with full self-launching power (in other words: the Whisper glider doesn’t have to be towed by a launch vehicle, like a conventional ultralight glider).
Quiet cool
Range under full power is about 109 miles with current battery tech, but it’s expected that range under the latest EPiC 2.0 energy batteries would rise to nearly 170 miles.
Nathan Millecam, CEO of Electric Power System, said, “EPiC 2.0’s leap in energy density and thermal performance has enabled a significant increase in range, a clear validation of our next-gen cell technology. We are impressed by what the Whisper team continues to achieve in advancing electric aviation.”
The press release concludes explaining that flight tests are expected to show that the Whisper Aero glider can be flown, “a few hundred feet away from neighborhoods without any disturbances, while carrying a 220 lbs. payload with full range,” which is all kind of ominous in today’s political climate, but still pretty neat from a purely tech perspective.
The TNGO grant follows a separate grant from NASA awarded last year, though that grant aims to develop the eQ250s – not as a propulsion system, but as a key component in future spacecraft ventilation systems.
Tennessee Tech announces TNGO grant
With support from TNECD’s Transportation Network Growth Opportunity (TNGO) initiative, Tennessee Tech University and Whisper Aero are partnering to advance next-generation propulsion technology in the aerospace industry. This collaboration will enhance aerospace research and workforce development, ensuring Tennessee remains a leader in cutting-edge mobility solutions.
SOURCE | IMAGES: TNECD; via eVTOL Insights, New Atlas.
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.
A Tesla Cybertruck owner believed Elon Musk’s claims that the Cybertruck would be able to “act as a boat” and “cross rivers”, and he got his $100,000 stuck because of it.
Elon Musk has often made claims about how Tesla vehicles could float and briefly serve as a boat in the past.
We have never been taken too seriously because Tesla’s warranty states something different about taking the vehicle into water.
However, the CEO doubled down on the claim specifically for the Cybertruck.
Ahead of launching the production version of the Cybertruck, Musk claimed the vehicle would be “waterproof enough” to serve as a boat and cross rivers:
Cybertruck will be waterproof enough to serve briefly as a boat, so it can cross rivers, lakes and even seas that aren’t too choppy.
The CEO added that the goal is for a Cybertruck to be able to cross the water between SpaceX’s Starbase and South Padre Island in Texas, which is about 360 meters (1,100 feet).
We have been taking the Cybertruck more seriously with water because we learned that Tesla built a ‘wade mode’ for the truck to be able to go into the water. Tesla says the mode increases the ride height to the max and temporarily “pressurizes the battery pack.”
The problem is that it is activated through the off-roading mode, which is not covered under Tesla’s warranty – so we are taking everything with a grain of salt.
Whenever Tesla’s warranty contradicts what Musk says, it is better to follow to the warranty.
A Tesla Cybertruck owner in Truckee, California, appears not to have received this sage advice since they activated the wade mode and attempted to get into the water.
The Cybertruck owner quickly got stuck. The local California Highway Patrol (CHP) shared some pictures of the aftermath (via Facebook):
CHP Truckee helped with the recovery and commented on the incident:
Cybertruck activated “Wade Mode”… and waded a bit too far… We’re all for testing boundaries… but maybe not the waterline. Remember folks, “Wade Mode” isn’t “Submarine Mode.” If your plans include exploring the great outdoors, make sure to know your limits and the terrain.
There’s no detail on the damage to the Cybertruck, if any.
As we recently reported, repair costs for the stainless steel electric pickup truck can increase rapidly.
This Cybertruck owner is also not the first one to get stuck in water. We previously reported on a Tesla Cybertruck sinking into the water when launching a jet ski.
Electrek’s Take
At the risk of stating the obvious, this is clearly more of a user error than a Cybertruck problem.
I think the verdict is clear: Cybertruck is far from the best electric pickup truck for off-roading.
However, in general, you shouldn’t expect a truck to get out of water on a muddy bank.
I think a lot of Cybertruck owners are new to trucking and off-roading, and they are making the truck look worse than it is at off-roading.
If you want to take your Cybertruck off-road, I recommend to first go with an off-roading guide that can help avoid some simple mistakes like this.
Also, in general, don’t take Elon Musk’s claims at face value when he says that Tesla vehicles can do something that sounds like an exaggeration. It probably is an exaggeration.
Getting solar at your home is one of the best financial moves you can make while helping the economy move away from fossil fuels. EnergySage enables you to find a trusted, reliable solar installer near you that offers competitive pricing It is a free service that makes it easy for you to go solar – whether you’re a homeowner or renter. They have hundreds of pre-vetted solar installers competing for your business, ensuring you get high-quality solutions and save 20 to 30% compared to going it alone. Some installers even offer Tesla products. Plus, it’s free to use and you won’t get sales calls until you select an installer and you share your phone number with them.
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