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.
Environment
Volvo Penta teams up with e-power to equip Boels with next-gen Battery Energy Storage Systems (BESS)
Veteran marine and industrial power solutions company Volvo Penta has joined forces with energy solutions provider e-power to build battery energy storage systems (BESS). Volvo Penta’s battery systems for energy storage will power BESS units built by e-power that can be catered to a range of applications, most notably construction rental clients like Boels Rentals in Europe.
Volvo Penta is a provider of sustainable power solutions that currently serves land and sea applications under the Volvo Group umbrella. As more and more of the world goes all-electric, the global manufacturer has also adapted, sharing cultural values with Volvo Group to engineer new and innovative sustainable power solutions.
Nearly 100 years later, Volvo Penta remains an industry leader in marine propulsion systems and industrial engines. As more and more of the world goes all-electric, the Swedish manufacturer has also adapted, sharing cultural values with Volvo Group to engineer new and innovative sustainable power solutions.
For example, all Volvo Penta diesel engines now run on hydro-treated vegetable oil (HVO), reducing well-to-wheel emissions by up to 90% across the marine and industrial power industries. On the zero-emissions side, Volvo Penta has expressed its dedication to fossil-free power solutions, including battery electric components to serve heavy-duty applications such as terminal tractors, forklifts, drill rigs, and feed mixers, to name a few.
To leverage its battery electric value chain, Volvo Penta has also ventured into battery systems for energy storage (or BESS subsystems). These energy-dense, purpose-built BESS subsystems can provide portable, sustainable energy for all-electric charging and reduce grid dependency.
Volvo Penta to deploy battery systems for energy storage
Volvo Penta recently announced a strategic partnership with e-power, a Belgian power solutions provider. Together, Volvo Penta and e-power will develop a scalable Battery Energy Storage System (BESS) for Boels Rental.
The collaboration continues a long-standing partnership between all three companies. Boels – one of the largest construction rental companies is a long-time customer of e-power generators that utilize Volvo Penta engines. As the company shifts toward electrification and sustainability, it will again turn to those companies to deliver reliable performance.
Volvo Penta’s BESS subsystem comprises battery packs, a Battery Management System (BMS), DC/DC converters, and thermal management, combining to offer a compact, high-density, and transport-friendly solution optimized for rental operations. The company shared that this BESS design is integration-ready, enabling other OEMs like e-power to adapt and scale systems to customer-specific needs. Per e-power business support director, Jens Fets:
We’ve built our reputation on reliability and efficient power systems. Working again with Volvo Penta, this time on battery energy storage, allows us to meet the growing demand for energy in a silent, low-emissions, compact and mobile design—especially in rental applications.
The deployment of these new battery energy storage systems will help Boels cater to its customers’ growing demand for clean, silent, and mobile energy solutions in construction and other industrial applications.
Aside from being more quickly adaptable to customer needs, Volvo Penta says its BESS architecture marks an overall shift in rental power systems. This is welcome news for all who support a cleaner, more sustainable future across all industries.
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That didn’t take long! Just a few hours after Mercedes revealed the screen-heavy interior of its upcoming 2026 GLC EV, photos of the new crossover’s exterior – and that controversial grille! – leaked on Instagram and Reddit. We’ve got them here.
Two days ahead of the GLC EV’s officially schedule global debut, images that reportedly show the new 2026 Mercedes undisguised have leaked on Instagram and Reddit. They show the blocky new light-up grille on the nose of a very smooth, jellybean-like crossover shape that, despite Mercedes’ insistence that it’s moving away from the EQ series’ design language, looks an awful lot like an EQ Mercedes.
Check out the leaked images from kindleauto’s Instagram account, below, and see if you agree with that assessment.
If you need to see more before you feel comfortable commenting on the new SUV’s looks, there’s a few more angles over on the r/mercedes_benz subreddit.
Leaked exterior pictures of the upcoming GLC EV
byu/Quick_Coyote_7649 inmercedes_benz
As with everything else on the internet, take those unofficial images with a grain of salt and maybe wait until the GLC EV’s official reveal in a few days’ time before casting your final vote on the new look – but there’s very little reason to believe the new Mercedes will look terribly different from what you see here.
Will the new grille and tech-forward interior with its massive, 39″ screen and MB.OS software be enough to turn the tide for Mercedes-Benz, enabling it to finally gain some traction in the electric crossover market? That remains to be seen, but the recently updated Tesla Model Y and crisply-styled new BMW iX3 with its 500 miles of range will make it an uphill battle, for sure.
We got a sneak peek at the new GLC back in July, when Mercedes-Benz Group CEO, Ola Källenius said that, “We’re not just introducing a new model – we’re electrifying our top seller.” Back then, we learned that the new GLC EV would have a wheelbase 3.1″ longer than the current ICE-powered model, as well as more head- and leg-room for its occupants and an extra 4.5 cubic feet (for 61.4 total) of cargo space.
Källenius also promised an innovative new 800V electric architecture and the latest battery tech, which will enable the electric GLC to add around 260 km (~160 miles) of WLTP range in just ten minutes thanks to more than 300 kW of charging capability.
SOURCES | IMAGES: kindleauto; Quick_Coyote_7649.
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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For more than 30 years, John Deere’s go-anywhere Gator has been a trusted tool for ranchers, landscapers, and hobby farmers. But the all-electric TE 4×2 version of Big Green’s little truckster rarely gets to steal the spotlight from its ICE-powered 6×4 cousins.
We’re going to change that.
Unlike some of those other UTV brands that just recently entered the electric vehicle game, John Deere introduced its first all-electric Gator way back in 1998.
That OG E-Gator was designed from the ground up for quiet work in places like golf courses, university and hospital campuses, luxury resorts, and corporate grounds – but its go-anywhere design and quiet running made it a favorite of hunters and ranchers, too. Fitted with eight heavy, 12V lead-acid batteries, the ’98 Gator could deliver 6 hours of runtime between overnight charges.
We haven’t come a long way, baby
If it ain’t broke, don’t fix it. That seems to be the mentality at Deere when it comes to the all-electric Gator. The TE 4×2 hasn’t chased trends or tried to reinvent itself with flashy autonomous tech. Instead, it’s relied solid, work-horsey reasons. Instead, the UTV has leaned on the formula that’s made it a winner for more than 25 years: bulletproof reliability, low maintenance, and a design that just works. Even the added weight of the low-tech batteries compared to more energy-dense li-ion deals makes sense in this application, providing weight over the drive wheels that delivers sure-footed traction on slippery grass or muddy trails.
That’s not to say the Gator hasn’t changed at all over the last few decades. The electrical system has been upgraded to 48V, and its high-capacity, deep-cycle batteries (12 kWh total capacity) give the TE 4×2 dependable, all-day runtime (up to 8 continuous hours) with the benefit of modern chargers, regenerative braking (!), and updated safety features.
The TE 4×2 electric Gator is available from your local Deere dealer with prices starting at $15,699. And, if you’re looking for an endorsement: my personal Gator is easily my favorite thing … maybe I should try to change my Twitter X handle to “GatorJo”?
Let me know what you think of that idea in the comments.
SOURCE | IMAGES: John Deere.
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.
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