Banding Together: How Aggregation Helps Cities Buy Renewables at Scale
By Yuning Liu & Mia Reback
In March 2021, 24 local governments in Maryland joined together on a plan to purchase enough renewable energy to power more than 246,000 homes a year. They did this by issuing a joint request for proposal (RFP) through the Baltimore Regional Cooperative Purchasing Committee (BRCPC) to seek a supply of up to 240,000 MWh of renewable energy starting in 2022. This large-scale transaction was made possible by an energy procurement approach known as energy aggregation, which is a way for two or more buyers to purchase electricity from a utility-scale generation facility.
According to the new Intergovernmental Panel on Climate Change (IPCC) report, greenhouse gas emissions (GHGs) must peak within four years to limit global warming to 1.5°C, and cities have a critical role to play in meeting that target. Aggregation can be a powerful way for cities to rapidly increase their renewable energy and help decarbonize local economies at the necessary speed and scale. Yet most cities have not pursued aggregation due to an inadequate understanding of its novel deal structure and a lack of tools and resources to help streamline the process.
Aggregation can be a powerful way for cities to rapidly increase their renewable energy and help decarbonize local economies at the necessary speed and scale.
To help cities overcome these barriers, last year the American Cities Climate Challenge Renewables Accelerator, an initiative co-led by RMI and World Resources Institute, began organizing a Large-Scale Renewables Aggregation Cohort. This cohort provided technical assistance to more than 30 organizations, including the BRCP. A second iteration of the cohort is now underway with a new group of organizations. In addition, a newly released RMI report, Procuring Large-Scale Renewables through Aggregation: A Guide for Local Governments aims to help more cities understand and pursue aggregation.
As more and more cities take actions to decarbonize the electricity system, aggregation will be an increasingly important option that can provide buyers with several advantages, such as opening doors for smaller cities, creating positive network effects, and unlocking more cost savings.
Enabling Smaller Buyers to Access Large-Scale Projects
Aggregation can enable participation from smaller cities that, on their own, are not able to purchase enough electricity to warrant the attention from developers. This is particularly important for smaller communities with 100 percent renewable energy goals, as most municipalities cannot supply 100 percent of their electricity needs with on-site solar generation alone. Therefore, a utility-scale, off-site procurement will be an essential component of many smaller buyers’ decarbonization strategy.
One instance of a small buyer accessing large-scale renewables projects is a 25 MW joint solar purchase completed by MIT, Boston Medical Center (BMC), and Post Office Square (POS) in 2016. In this aggregated deal, MIT committed to buy 73 percent of the power generated by the new array, with BMC purchasing 26 percent and POS purchasing the remainder.
“Entering into a renewable power purchase agreement was our next step, but our consumption is too small to do it alone,” said Pamela Messenger, general manager of Friends of POS. “It is exciting to join forces with two industry leaders, allowing us to mitigate 100 percent of our electricity footprint.”
Similarly, other smaller local governments have also used aggregation to gain access, such as five local governments in Maine. They teamed up for the state’s first multi-town renewables project, a 4 MW solar array, which provides climate benefits equivalent to more than 4,000 acres of forests.
Without pooling the electricity demand with other buyers, smaller cities would not be able to access utility-scale projects on their own, making it difficult to reduce their carbon emissions efficiently.
Creating Knowledge-Sharing Opportunities
By joining together, cities can not only aggregate their buying power but also pool their knowledge to streamline procurement processes. The shared experience among participants can generate positive network effects, including increased mentorship, increased credibility, and support for inexperienced buyers.
For example, the City of Nashville partnered with Vanderbilt University last year to purchase electricity from a 125 MW solar project as part of the Tennessee Valley Authority’s Green Invest program. This public-private partnership allowed the city to leverage the expertise of the University’s Large-Scale Renewable Energy Study Advisory Committee to identify the best risk mitigation strategy.
According to Susan R. Wente, interim chancellor of Vanderbilt University, “We want this partnership to serve as a model of collaboration that other organizations within our region and beyond can replicate to make long-term, lasting changes to protect our shared environment.” In fact, the connections formed within the aggregation group have garnered national media attention and are sending a powerful signal to utilities, policymakers, and developers that local governments are serious about rapidly decarbonizing the electricity system.
In addition, a group of buyers can also share external lawyers, accountants, or consultants. For instance, 15 Pennsylvania municipalities and public entities, which also participated in the Renewables Accelerator’s Large-Scale Renewables Aggregation Cohort, have teamed up to investigate the viability of investing in a joint solar deal. The 15 entities issued a joint RFP for energy consultants in May 2021 to share external advisory services.
Unlocking More Cost Savings
Throughout the collaborative process, aggregated deals can produce various cost savings because they enable cities to achieve greater economies of scale by combining the renewable energy demands of multiple buyers.
For example, a National Renewable Energy Laboratory analysis estimates that procuring 100 MW of solar instead of 5 MW can reduce development costs by 24 percent. This can lead to cost savings in the form of lower power purchase agreement prices for all buyers, regardless of size.
In another case, the company Enel X, which is working with the BRCPC on a joint purchasing strategy, found that renewable energy projects typically must be over 20 MW in size to be economical. The company discovered that aggregation is one way for smaller buyers to participate in large projects.
In Florida, 12 cities joined together to form the Florida Municipal Solar Project. They are developing 372.5 MW of zero-emissions energy capacity, enough to power 75,000 Florida homes. According to Jacob Williams, CEO and general manager of the Florida Municipal Power Agency, “By working together, our cities are able to provide clean power to their communities in a cost-effective way.” Clint Bullock, Orlando Utilities Commission general manager and CEO, explained, “We can leverage the economies of scale to bring the price of solar down to a point where a dozen municipal utilities can afford to sign on and I believe this is something people around the country will take notice of.”
Better Together
As more cities set goals to transition to renewables, aggregation is democratizing clean energy access by enabling participants, especially smaller buyers, to collectively develop significantly larger renewables projects than any one buyer would be able to access individually. The partnerships can create positive network effects through knowledge sharing and inspire other organizations within the region to replicate the collaboration model. By unlocking more cost savings, aggregated deals provide a lower-cost mechanism for cities to achieve climate goals efficiently.
The new IPCC report underscores the urgency of decarbonizing the electricity system and reducing GHGs. To play their part, cities need to increase the pace and scale of renewable energy procurement. Although aggregation is still a relatively underutilized procurement method, this approach is crucial to help them do that.
Procuring Large-Scale Renewables through Aggregation: A Guide for Local Governments helps walk local governments through the aggregated procurement process step-by-step and links to other key tools and resources relevant to each stage.
Cities must act now to curb greenhouse gas emissions. The best path forward involves engaging all actors and ensuring a more promising economic structure for a wide array of purchasers. In the battle against climate change, it is better to aggregate than to go it alone.
Article courtesy of RMI.
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.
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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.
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The latest Chinese EREV to arrive in the west, the Omoda 9 SHS crossover hopes to shake things up in the hyper-competitive class with a top-shelf tech package, more horsepower than a Porsche 911 GT3, and a €39,900 price tag.
Established in 2022 as an upscale electric sub-brand by the Chinese car giant, Chery, Omoda has global ambitions – a fact that’s underscored by launch of the new Omoda 9 SHS (for “Super Hybrid System”) SUV shown here. And, with up to 535 hp in the top EU-market trim, Spanish auto enthusiast site Motorpasión reports that nothing cheaper is more powerful.
To put those 535 hp into context, Porsche’s motorsports-focused 911 GT3 supercar generates “just” 502 from its 4.0L flat-six engine. The Omoda’s 535, meanwhile, are generated by a single electric motor powering the SHS’ front wheels and a pair of electric motors at the rear – good enough to rocket the SUV from 0-62 mph (100 kmh) in just 4.9 seconds.
Under the hood
The SHS version of the Omoda packs a 34.46 kWh battery pack that lets Omoda 9 SHS go 145 km (a little over 90 miles) on pure electric power. Once the battery is depleted, the 1.5 liter turbocharged ICE unit (shown, above) kicks on, providing an additional 935 km of driving for a combined 1,100 km of “range” from a full tank and battery.
That said, this is a PHEV/EREV with more than enough all-electric range to handle all but the most extreme of edge-case daily driving needs – and, as such, Omoda expects the 9 SHS it to be used more like an EV. To that end, it’s capable of DC fast charging at up to 65 kW, charging from 20% to 80% in under 30 minutes.
Omoda execs, for their part, seem pretty proud of themselves. “The OMODA 9 represents a significant advancement for our brand, embodying modern living with its beautiful design, intelligent engineering, and usable technology,” says Victor Zhang, UK Country Director for OMODA. “Our SHS technology demonstrates the progress in hybrid vehicles, offering performance, range, and seamless integration into daily life. We believe the OMODA 9 delivers the comfort, power, and quality that today’s drivers expect.”
To meet those expectations, the Omoda 9 SHS offers drivers a dual 12.3″ curved screen display, a 540° rear-view camera, and a Sony sound system with HD speakers integrated into the front seats’ Nappa leather headrests. Those leather seats also feature fully electric adjustment, as well as heat, fan, and massage functions.
The 9 SHS is one of several new models introduced at this week’s Shanghai Auto Show, and is available for order in the UK and EU for delivery later this year.
Electrek’s Take
We can talk about tariff this and trade war that all day long. The real message here, however, is that China is objectively, unequivocally, and obviously years ahead of the US when it comes to American EVs in terms of manufacturing efficiency, battery and charging technology, and value. And, as long as they have a system that takes the burden of pensions and healthcare and other basics of life off the manufacturer, they’ll probably keep pulling ahead.
Head on down to the comments and change my mind.
SOURCE | IMAGES: Omoda; via Motorpasión.
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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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