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.
Inflation is back, with prices rising 2.7% compared to last year (and that doesn’t include food, fuel, or rent, which are up even more), which is objectively bad. But it’s not true that everything is getting more expensive. These inflation-busting EVs are heading into 2026 with prices that are lower than they were in 2025!
There’s plenty of reasons for prices to go up or down in a market – everything from tariffs and taxes and increased domestic production to changes in inflation or even just a manufacturerwillingness to take a smaller profit on per-unit sales in order to drive volume. There’s a little bit of all of that happening in the American EV market this year, especially in the face of the expiring Federal EV tax credit that kind of makes most EVs cost $7,500 more than they would have otherwise.
That said, as I was putting this list together, I realized there were plenty of ways for me to present these MY26 price cuts. “Best deals?” Too opinion-based. “Biggest discounts by percentage?” Too much math. In the end, I went with alphabetical order, by make. Enjoy!
Cadillac OPTIQ
Cadillac is the industry’s luxury EV leader these days – and for good reason. Its electric crossovers are good-looking, have long range, great acceleration, and ultra-fast charging. Heck, they can even power your home in a pinch.
Even so, the powers that be at GM are worried about how their EV sales will fare in an American without a $7,500 Federal EV tax credit, so they’re offering a rear-wheel-drive version of the OPTIQ crossover with 300 miles of range for the 2026 model year with a starting price that’s nearly $2,000 lower than the least-expensive 2025.
Chevy Silverado EV
Chevy is crushing it right now. After setting EV range records and surpassing Ford in EV sales this semmer, Chevy is now the fastest-growing domestic EV brand in the US – and they’re seemingly intent on keeping that momentum into 2026 with a more affordable WT trim level that starts at $54,895, compared to $57,095 for the ’25 WT Standard Range.
The financial picture is looking rosier at the top of the Silverado EV model range, too. The range-topping model for 2026 is the $88,695 Trail Boss, while the $97,895 RST Max Range topped the 2025 lineup.
Mercedes-Benz EQS
Despite being objectively capable, technologically-advanced, and supremely luxurious long-range electric vehicles, the Mercedes EQS and EQS SUVs were saddled with a somewhat anonymous, jellybean-like styling language that’s seen the flagship EVs struggle to find a foothold in the ultra-luxury segment they inhabit.
To that end, Mercedes kicked off its 2025 with big discounts on its in-stock EQS and EQS SUVs, and is responding to lower-than-expected market demand by reducing the cars’ MSRPs. In the case of the EQS SUV, by an inflation-busting $15,000 (!).
Toyota bZ
For 2026, Toyota has axed the bZ4X name and added a raft of both functional and cosmetic improvements to its five-passenger electric crossover, including body color fenders, up to 25% more range, and – thanks to a new thermal management system and battery preconditioning – a bigger battery that can charge from 10-80% capacity in about thirty minutes.
Even with those upgrades, the new and improved 2026 Toyota bZ is cheaper than the outgoing bZ4X, starting at $34,900 – or $2,170 less than the outgoing model.
Disclaimer: the prices above were sourced from CarsDirect, Motor1, and a number OEM websites. All offers were current as of 07SEP2025, and all links provided are from trusted affiliates. These prices may not be available in every market, with every discount, or for every buyer (the standard “with approved credit” fine print should be considered implied). Check with your local dealer(s) for more information.
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Sennebogen’s new 824 G Electro Battery material handler is being put through its paces at a recycling site in Munich’s Aubing district. And, thanks to its innovative grid-connected/battery system, it never has to stop to recharge!
With its emphasis on the recycling of stainless steel, ferroalloys, and superalloys, CRONIMET Alpha’s recycling operations are loud, and adding the ceaseless drone of diesel engines straining against the mass of all that metal as it’s sorted and fed into bailing presses. That’s why the company was so excited to test out Sennebogen’s new, all-electric 824 G Electro Battery material handler during an extensive trial at its Munich site.
So far, CRONIMET’s operators have been impressed with the new Sennebogen. “The battery-powered machine drives just like a diesel-powered one,” explains equipment operator Zoran Alexsic. “You don’t notice any difference in power – only that everything runs much more smoothly and quietly … you don’t have to take breaks to escape the noise.”
Quiet, but powerful
The Sennebogen 824 G comes standard with a 98 kWh battery, but operators can install up to four modular packs for a total of 392 kWh and roughly eight hours of runtime. Even with a single pack—good for 1.5 to 3 hours—the machine can keep CRONIMET’s operations running almost nonstop, thanks to its built-in dual power mode.
Sennebogen’s dual power mode enables the 824 G to run on battery while drawing power from the grid at the same time. When connected to grid power, the machine can recharge its batteries as it works, eliminating the downtime other BEVs need for charging and giving operators the freedom to reposition the machine on battery power, then plug back in when convenient.
Beyond flexibility, the electric handler is also cleaner, quieter, and more cost-effective than the diesel models it’s designed to replace. By seamlessly cycling between battery and grid power, it reduces both noise on the job site and energy costs during peak hours.
Electrek’s Take
We’ve seen grid-connected equipment assets like this before, and with good reason. Simply put, it takes many more kilowatts of energy to dig up tons and tons of dirt and rocks than it does to send an aerodynamically smoothed sedan down a road. That’s why you still see a push towards hydrogen and other energy-dense fuels in construction – but permanently grid connected assets, whether wired or inductive, could solve for some of the limitations of batteries on job sites that can support them.
If the 824 G Electro Battery is a commercial success, expect Sennebogen to roll out more grid-connected options in the years to come.
SOURCE | IMAGES: Sennebogen.
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.
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MINI has partnered with lifestyle brand, Deus Ex Machina, to develop this. It’s called the Skeg, and it’s a high-performance, racing-inspired electric concept car that’s sure to lighten the mood – by shedding fully 15% of its mass in the quest for speed.
One of a pair of exclusive, one-off concepts based on MINI’s John Cooper Works cars. The Deus Ex Machina Skeg celebrates MINI’s storied racing history with what the company calls, “a clean, minimal, and quiet rebellion,” that draws on materials, technologies, and philosophies from the world of surfing.
The electric MINI JCW Skeg is stripped to its essentials, with much of the steel and aluminum bits replaced with lightweight fiberglass to maximize acceleration while driving the minimalist aesthetic home. The end result weighs 15% less than the standard car – but makes the same stout 190 kW (258 hp) as the production car.
Surf’s up
The interior is stripped back to the barest essentials, reflecting BMW’s vision of a surf culture that prioritizes function over form. MINI claims the end result resembles a mobile surf shop, with fiberglass trays for wetsuits, specially shaped bins, neoprene seats, and other touches that “bring the surf culture into the interior.”
For their part, the BMW and MINI styling team seems pretty proud of its minimalistic electric endeavor. “In this extraordinary collaboration … every single detail has been crafted with artisanal precision and expertise,” says Holger Hampf, Head of MINI Design. “This has resulted in unique characters that are clearly perceived as belonging together through their distinctive design language and use of graphics.”
The concept retains the production version’s 54.2 kWh li-ion battery pack, up to 250 of WLTP range with the production aero kit, sprints from 0-100 km (62 mph) in just 5.9 seconds. With 15% less mass, though, that should jump to more than 255 miles, with 0-60 times dropping below 5.5 seconds.
I dig it – but I’d skip the surf bits and just appreciate the raw composite, minimalist interior look for what it is. Take a look at the image gallery, below, then let us know what you think of MINI’s Skeg concept in the comments.
MINI Skeg concept | gallery
SOURCE | IMAGES: BMW MINI.
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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