The Heat Is On — Is The Grid Ready?
Courtesy of Pacific Northwest National Laboratory.
By Kelsey Adkisson
As yet another heat wave shattered temperature records in the Pacific Northwest in mid-2021, threats of rolling blackouts rippled throughout the region.
These recurring extreme weather threats offer a sobering reminder that aging energy grids weren’t designed to handle the stress of climate change. Nor were they designed to withstand the energy impact from extreme events like heat waves, droughts, or wildfires, which are predicted to become more frequent and intense, according to Pacific Northwest National Laboratory’s (PNNL’s) Nathalie Voisin, a PNNL Earth scientist who is part of a team working on grid resilience in relation to climate change.
“Even under modest climate change projections, threats of power shortfalls will become more common,” said Voisin.
In the Pacific Northwest, which is dependent on hydropower to help generate electricity, more frequent heat waves, water scarcity, and increased wildfire risk put increased pressure on an overburdened power grid. Currently, over 90% of the western United States is facing drought conditions. One year ago, it was 40%.
To relieve some of that pressure, research teams at PNNL are focused on prevention. They are working to predict future drought scenarios and create hydropower and grid contingency plans, implement smart electricity load controls, manage forests to reduce the impact of wildfire, and place new grid infrastructure, like energy storage or microgrids, where they are needed most.
“When we’re talking about power shortfalls, even small steps add up. Shifting large appliance use, like a high amount of dishwashers or washing machines, from afternoon and evening peak hours to the morning or the night, or increasing thermostats a couple degrees in the summer and using ceiling or floor fans can make a difference,” said PNNL’s Dhruv Bhatnagar, an energy systems engineer.
What high temperatures mean for hydropower
The early summer heat wave of 2021 led to a spike in energy demand that left hydroelectric dam operators with a difficult choice: (1) use water to keep up with the surge, leaving less water for late summer, or (2) buy energy on the open market, often at higher prices and from natural gas.
PNNL modelers like Voisin are working to predict these types of events and the impacts to generation and load, including short-term issues like heat waves or longer-term issues like droughts via efforts like the Department of Energy’s HydroWIRES initiative.
PNNL researchers are using advanced modeling to predict droughts and provide grid operators with information for decisions on how to allocate power during extreme events. For instance, to simulate the impact of climate change on the future power grid, researchers used a computer model called GENESYS. Recent results showed that power systems will be affected by multiple stressors simultaneously, and these impacts compound and aren’t just additive.
PNNL is developing drought scenarios to help operators and regulatory agencies with future planning. This includes predicting future drought conditions and the impacts on hydropower and thermoelectric plants, which can then be used to understand the potential impact on grid operations and guide adaptation.
“This information is used to help operators make risk-informed decisions and determine where vulnerabilities may lie. Ultimately, it will help answer the question—given different stressors, will there be enough power to meet the demand and other power grid needs?” said Voisin.
“Will there be enough power to meet the demand?” — Nathalie Voisin, PNNL Earth scientist
Recently, Voisin and her team evaluated how hydropower operations vary seasonally and annually depending on water availability for the Chelan Public Utility District. For example, they demonstrated that even during a dry summer, when hydropower’s overall generation is limited by low water availability, hydropower maintains its flexibility to support the peak load under extreme events. This highlights the need to better consider the range of services that hydropower can provide to address the resilience of the grid under extreme events.
Wildfire and hydropower
During an above-normal fire season, like what is currently occurring in California, there will likely be impacts on the grid, either through intentional shutoffs to reduce fire risk or loss of infrastructure due to the fire itself.
“The idea is not to stop all wildfires but to work in advance to reduce their risk, and predict areas that are more prone to them,” said PNNL’s Mark Wigmosta, a PNNL environmental engineer. Wigmosta’s work focuses on forest thinning and restoration with the goal of less fuel for fires.
“The idea is not to stop all wildfires but to work in advance to reduce their risk” — Mark Wigmosta, PNNL environmental engineer
Reducing fuel load in highly dense forests may leave more water in streams and can lead to higher, longer-lasting snowpack. This may produce more water throughout the summer dry season.
“This may provide a way to get more water into the system, depending on location,” said Wigmosta. Another grid benefit is that weaker fires are likely to burn less energy infrastructure. For example, between 2000 and 2016, wildfires caused at least $700 million in damages to 40 transmission lines in California. Nationwide costs from wildfires are significantly higher.
After fires burn, there is typically an increase in runoff and sedimentation. Sediment flows downstream, builds up in reservoirs, and “isn’t great for infrastructure, including turbines,” said Wigmosta. Prescribed burns or tree thinning can actually increase flow volumes and improve hydropower operations. And, weaker fires will have less of a negative impact on infrastructure and the grid.
Better technology from buildings to batteries
During peak power demands, like a heat wave, emerging technology offers the potential for consumers to manage or supplement loads. Smart tools, like intelligent load control, automatically manage building energy use during peak electricity demands. PNNL has been working on ways to make buildings more energy efficient, in addition to optimizing the future of hydropower.
Backup or autonomous power sources also offer promise, particularly during emergency situations. Microgrids are self-contained grids that can power key areas, such as hospitals or police stations, during power shortfalls that could occur during extreme events like a wildfire or hurricane. PNNL’s Microgrid Component Optimization for Resilience tool helps streamline the design process for microgrids with the goal of simulating power under a variety of outage conditions.
PNNL is also taking a leadership role in developing new technologies for grid-scale energy storage, which includes a new generation of battery materials and systems and other forms of energy storage. For example, current grid-scale energy storage systems such as pumped storage hydropower use pumps to move water uphill to store renewable energy when demand is low and generate power when demands are high as water flows downhill. PNNL has been working on incremental steps with pumped storage, such as evaluating environmental impacts of newer systems, to enhance future grid resilience or working with international stakeholders to identify strategies to finance and develop new projects. Even concepts like pairing batteries with hydropower are being explored to enhance hydropower’s capabilities and assure reliability during power shortages while reducing environmental impacts.
“Ultimately, we want to prepare for extreme events. Whether it’s through technological innovation, enhancing grid resilience, or supporting long-term planning. We take a holistic approach to tackling these big, long-term challenges to support risk-informed decision-making,” said Voisin.
This work was supported by the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy and Office of Electricity, among other agencies.
Appreciate CleanTechnica’s originality? Consider becoming a CleanTechnica Member, Supporter, Technician, or Ambassador — or a patron on Patreon.
Xpeng has officially launched its new G7 electric SUV in China, entering the fiercely competitive electric crossover market with a starting price of just 195,800 yuan ($27,325 USD). The G7 is positioned squarely to compete with the Tesla Model Y and the newly unveiled Xiaomi YU7.
It is priced significantly more aggressively than the YU7, which shook up the industry just last week.
The G7, Xpeng’s seventh model, offers an attractive balance of performance, technology, and value, with an emphasis on the latter.
Like Lei Jun with the launch of the YU7 last week, He Xiaopeng was not shy about positioning the G7 against the best-selling Tesla Model Y.
He compared the specs and pricing with the leading premium crossover. Like Jun, he brought up Tesla’s comparison challenge against the new Model Y:
The G7 is powered by a single rear-wheel-drive electric motor producing 292 horsepower (218 kW), it achieves a 0-100 km/h acceleration in 6.5 seconds. Impressively, the G7 can cover between 602 km and 702 km (374-436 miles) based on China’s generous CLTC standard, depending on the battery option and wheel size.
Two battery options are available, both using lithium iron phosphate (LFP) technology: a 68.5 kWh and a larger 80.8 kWh pack. With Xpeng’s advanced 5C charging technology, drivers can recharge up to 436 km (271 miles) of range in just 10 minutes.
Additionally, the G7 supports Vehicle-to-Load (V2L) functionality, providing up to 6 kW of external power, like the YU7 announced last week.
On the design front, the Xpeng G7 adopts the company’s second-generation “X Face” styling, featuring sleek running lights connected by a continuous LED strip, a closed front end for aerodynamic efficiency, and a distinctive “Star Ring” rear taillight design. Xpeng emphasizes the vehicle’s aerodynamics with a drag coefficient of just 0.238 Cd, slightly higher than the Model Y’s 0.230 Cd.
Inside, the G7 embraces minimalism, replacing conventional buttons with a large 15.6-inch central touchscreen powered by Qualcomm’s Snapdragon 8295 chipset. A standout interior feature is the expansive 87-inch augmented reality head-up display (AR-HUD), developed in collaboration with Huawei, that significantly enhances navigation and driving assistance.
Practicality is emphasized with ample cargo space: an 819-liter trunk that expands to 2,277 liters with the seats folded, plus an additional 120-liter compartment beneath the trunk floor and a modest 42-liter front trunk (frunk).
Xpeng is touting an adaptive AI-driven suspension system that actively adjusts to road conditions within milliseconds, allegedly surpassing comfort benchmarks set by the Mercedes-Benz GLE and Tesla Model Y. Cabin quietness also ranks high on Xpeng’s list of priorities.
Luxury and convenience features include dual 50W wireless phone chargers, a 20-speaker premium audio system, and a panoramic sunroof. Passengers in the second row enjoy premium touches like an 8-inch control screen, individual climate settings, a foldable table, and wireless charging.
The top-tier “Ultra” variant employs two proprietary Turing AI chips capable of delivering a massive 2,250 TOPS of computing power, enabling advanced Level 3 autonomous driving capabilities set to become active via an OTA update by December 2025, pending regulatory approval. Standard versions use dual Nvidia Orin-X chips with 508 TOPS.
The Xpeng G7 starts at 195,800 yuan ($27,325 USD) for the base “Max” variant with 602 km of range, stepping up to 205,800 yuan ($28,720 USD) for the longer-range “Max” (702 km) and topping out at 225,800 yuan ($31,510 USD) for the high-end “Ultra” trim.
Customers ordering the G7 Ultra before July 31 will receive complimentary upgrades including Nappa leather and power door handles.
G7 quickly demonstrated its popularity by securing 10,000 pre-orders in just 46 minutes.
Electrek’s Take
It’s not 200,000 orders within 3 minutes like the YU7, but Xpeng doesn’t have the brand power that Xiaomi has.
Nonetheless, it is pretty impressive.
The price is insane. The specs are competitive with the Model Y, which starts at 263,500 yuan and ranges up to 313,500 yuan ($36,770 – 43,750 USD), but the price starts at about $10,000 USD less.
Between this, the YU7 last week, and a few more models launching this month, the premium crossover segment is about to get crowded in China.
I think the Model Y is in serious trouble in China. We are about to see how it fares with real competition.
FTC: We use income earning auto affiliate links. More.
Tesla’s humanoid robot program, Optimus, is reportedly in disarray amid the departure of the senior vice president in charge, Milan Kovac.
Production has been delayed due to a new redesign, as the robot has yet to prove useful in Tesla’s factories.
Elon Musk has previously set a goal for Tesla to produce 5,000 to 10,000 Optimus humanoid robots this year.
The goal has reportedly been delayed as sources within the Chinese supply chain report Tesla informed suppliers of a 2-month halt on orders.
AI Invest first reported the news, and The Information later corroborated the report:
Two supplier sources said Tesla has not explicitly stated it will reduce robot parts orders but will wait until the Optimus design adjustments are completed before finalizing a new mass production plan and resuming procurement. The adjustments may take two months. Musk recently stated on social media that the new version of Optimus has seen significant improvements over the second-generation Optimus unveiled in 2023 and now includes voice interaction powered by Grok.
The news came after we learned that Milan Kovac, the head of the Optimus program left Tesla last month, just months after being promoted to senior vice-president by Musk.
The new reports confirm that Ashok Elluswamy, who was elevated to senior vice-president in charge of self-driving at the same time as Kovac, is taking over responsabilities.
AI Invest reported some concerns from Tesla about Optimus that reportedly trickled down to Chinese suppliers:
According to Tesla’s feedback to suppliers, Optimus still faces hardware challenges, including overheating in some joint motors, low load capacity in dexterous hands, short lifespan of transmission components, and limited battery life. Tesla is currently evaluating samples from multiple dexterous hand suppliers, testing at least three different technical approaches. On the software side, Tesla may use more synthetic data to train the robot model, improving Optimus’ autonomous operation capabilities and success rate in performing complex tasks.
According to the report, Tesla had secured parts to build over 1,000 Optimus robots earlier this year and built quite a few, but they are currently only used “for moving batteries in Tesla’s battery workshops, with efficiency less than half that of human workers.”
The redesign is expected to delay plans by at least two months and could push many of Tesla’s goals.
However, Tesla is expected to still move ahead with the prgroam and it is likely to unveil the new generation of Optimus robots at its shareholders meeting this year.
Electrek’s Take
As I previously stated, I’m actually quite hyped for humanoid robots, but I don’t think they will be nearly as big as Musk claims and I simply don’t see Tesla having a significant advantage over the competition, which is significant.
Companies like Unitree are already selling robots, Figure has made impressive progress and poached from Tesla, then there’s Boston Dynamics and dozens more.
Kovac leaving just as Tesla is supposed to ramp-up production to 50,000 units next and make this a “multi-trillion-dollar” product is a red flag.The engineer would have certainly received sweet stock option packages when he was elevated to SVP and would have likely made a fortune if he would have been able to deliver on Musk’s goals.
But I think the real product at Tesla now is the stock – hence why they reportedly plan to unveil the next generation of the robot at the shareholders meeting and have it do another shady demostration, like it did at the ‘We, Robot’ event where the robots were remotely controlled by humans.
FTC: We use income earning auto affiliate links. More.
Honda is stepping up its electric scooter game with the launch of its second electric model for Europe, the CUV e:. Following Honda’s previous debut of the EM1 e:, a compact, city-focused moped, the CUV e: brings more power, more range, and more real-world usability to riders who want a practical electric alternative to a 125cc scooter.
Now finally ready for the spotlight, the CUV e: is built on an underbone-style frame and powered by a 6 kW side-mounted electric motor producing 22 Nm of torque. That puts it squarely in the 125cc-equivalent category, allowing it to reach a top speed of 83 km/h (52 mph).
It’s not built for the highway, but rather for urban and suburban riders who want to achieve speeds seen on the fastest of urban roads and keep up with just about any traffic in the city. For that role, it looks like a solid performer – more than capable of keeping up with city traffic or carrying a second passenger.
One of the most useful features, especially for urban residents and apartment dwellers, is its use of Honda’s Mobile Power Pack e: swappable battery system. The scooter carries two of these Gogoro-style removable battery units, each rated at 50 V and 1.3 kWh. Combined, they offer over 70 km (43 miles) of WMTC-rated range. Compared to the Honda EM1 e:’s single Mobile Power Pack battery, the dual batteries of the CUV e: give Honda the chance to pull twice as much power or offer twice the range.
Honda’s swappable battery standard is designed for portability and long life, with each pack weighing around 10 kg (22 lb) and rated for 2,500 full charge cycles. Honda has been slowly building a swappable battery ecosystem, and the CUV e: is clearly meant to be part of that larger infrastructure play.
Charging of the batteries is designed to be done easily off-board, either at home or at a battery station (where available). A full charge from 0 to 100% takes about six hours per pack, but Honda says 75% can be reached in just three hours. While fast charging would be nice, the swappable format means riders can keep an extra pair charged and ready if necessary, eliminating downtime altogether.
Honda didn’t skimp on features, either. The CUV e: offers three ride modes (Sport, Standard, and Econ), plus Reverse Assist for easier maneuvering. It includes a fairly spacious flat floorboard, under-seat storage, LED lighting, a USB-C port, and keyless ignition. Buyers can choose between a five-inch color TFT display or an upgraded seven-inch “RoadSync Duo” screen, which supports turn-by-turn navigation, music control, Bluetooth phone integration, and EV-specific ride data.
Positioned as a mid-range electric scooter, the CUV e: fills the space between low-speed mopeds and larger, premium e-motorcycles. It’s a key piece in Honda’s broader electrification strategy, which aims to introduce 10 or more electric motorcycle models globally by 2025 and reach full carbon neutrality in its motorcycle division by the 2040s.
With anticipated pricing starting at around €4,000 (approximately US $4,300), the CUV e: is expected to roll out in Europe first, with other global markets potentially following. Its combination of practical range, moderate speed, high build quality, and swappable batteries could make it an appealing option in cities where electric two-wheelers are on the rise.
If the EM1 e: was Honda dipping a toe into the electric waters, the CUV e: feels like a confident step forward. It’s not flashy, but it’s functional, well-designed, and undeniably useful, which is exactly the kind of machine that could help electric scooters go mainstream.
FTC: We use income earning auto affiliate links. More.
-
Sports3 years ago‘Storybook stuff’: Inside the night Bryce Harper sent the Phillies to the World Series
-
Sports1 year agoStory injured on diving stop, exits Red Sox game
-
Sports2 years agoGame 1 of WS least-watched in recorded history
-
Sports2 years agoMLB Rank 2023: Ranking baseball’s top 100 players
-
Sports4 years ago
Team Europe easily wins 4th straight Laver Cup
-
Environment2 years agoJapan and South Korea have a lot at stake in a free and open South China Sea
-
Sports2 years agoButton battles heat exhaustion in NASCAR debut
-
Environment2 years agoGame-changing Lectric XPedition launched as affordable electric cargo bike