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.
On today’s exciting episode of Quick Charge, we don’t even mention “you know who,” focusing instead on EV news from Rivian, Lucid, Nissan, Ford, and what it takes to make a MAN in the heavy truck space. Check it out!
Sure, Nissan is pushing back production estimates on its yet-to-begin-production Nissan LEAF and Ford’s EV sales were down significantly in Q2, but there’s more to the story than the “Faux News” crowd would have you believe. Plus: some new electric success stories from Porsche and a disappointing (but still cool) dive into some new home backup battery tech.
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he 30% federal solar tax credit is ending this year. If you’ve ever considered going solar, now’s the time to act. 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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Battery electric cars sold today in Europe produce 73% less life-cycle greenhouse gas emissions than gas cars, even when factoring in production, according to new research from the International Council on Clean Transportation (ICCT). That’s a big improvement from 2021, when the gap was 59%.
Meanwhile, hybrids and plug-in hybrids haven’t made much progress. The study confirms what clean transportation advocates have been saying for years: If Europe wants to seriously slash emissions from its dirtiest mode of transport – ICE passenger cars, which pump out nearly 75% of the sector’s pollution – it needs to go all-in on battery EVs.
“Battery electric cars in Europe are getting cleaner faster than we expected and outperform all other technologies, including hybrids and plug-in hybrids,” said ICCT researcher Dr. Marta Negri. Credit the continent’s rapid shift to renewables and the higher energy efficiency of EVs.
The makeup of the EU’s power grid is changing fast. By 2025, renewables are expected to generate 56% of Europe’s electricity, up from 38% in 2020. And that’s just the beginning: the share could hit 86% by 2045. Since cars bought today could still be on the road two decades from now, the growing use of clean electricity will only boost EVs’ climate benefits over time.
Gas-powered cars, on the other hand, will stay mostly tied to fossil fuels as the cost and availability of biofuels and e-fuels are still uncertain.
Hybrids and plug-in hybrids only cut lifetime emissions by 20% and 30%, respectively, compared to gas cars. That’s partly because plug-in hybrids tend to run on gas more than expected. So while hybrids aren’t useless, they’re just not good enough if we’re serious about climate goals.
Countering EV myths with hard data
There’s been a lot of noise lately about whether EVs are really that green. The ICCT study takes aim at the bad data and misleading claims floating around, like ignoring how the grid gets cleaner over time or using unrealistic gas mileage figures.
It’s true that manufacturing EVs creates more emissions upfront – about 40% more than making a gas car, mostly due to the battery. But EVs make up for it quickly: that extra emissions load is usually wiped out after about 17,000 km (10,563 miles) of driving, which most drivers hit in a year or two.
“We’ve recently seen auto industry leaders misrepresenting the emissions math on hybrids,” said Dr. Georg Bieker, senior researcher at the ICCT. “But life-cycle analysis is not a choose-your-own-adventure exercise.”
ICCT’s new analysis includes emissions from vehicle and battery production and recycling, fuel and electricity production, and fuel consumption and maintenance. It even adjusts for how the electricity mix will change in the coming years – a key detail when measuring plug-in hybrid performance.
Read more: Volkswagen’s 47% BEV sales jump includes a 24% boost in the US
The 30% federal solar tax credit is ending this year. If you’ve ever considered going solar, now’s the time to act. 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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![Here's our closest look at the Kia EV2 caught testing in the Alps [Video]](https://i0.wp.com/electrek.co/wp-content/uploads/sites/3/2025/07/Kia-EV2-closest-look.jpeg?resize=1200,628&quality=82&strip=all&ssl=1)
The EV2 may be Kia’s smallest electric vehicle, but it has a big presence on the road. Kia promises it won’t feel so small when you’re inside, thanks to clever storage and flexible seating. After a prototype was spotted testing in the Alps, we are getting our closest look at the Kia EV2 so far.
Kia EV2 spotted in the Alps offers our closest look yet
Kia first unveiled the Concept EV2 during its 2025 EV Day event (see our recap of the event) in April, a preview of its upcoming entry-level electric SUV.
Despite its small size, Kia claims it will “redefine urban electric mobility” with new innovative features and more. Kia has yet to say exactly how big it will be, but given it will sit below the EV3, it’s expected to be around 4,000 mm (157″) in length. The EV3 is 4,300 mm (169.3″) in length.
Looking at it from the side, it sits much higher than you’d expect, similar to Kia’s larger EV9. During an exclusive event at Milan Design Week in April, Kia gave a sneak peek of the interior.
Kia said the interior is inspired by a “picnic in the city,” or in other words, a retreat from the busy city life. With a flat-floor design and flexible seating, you can quite literally have a picnic in the city.
Although we’ve seen the EV2 out in public testing a few times, a new video provides the closest look at Kia’s upcoming electric SUV.
The video, courtesy of CarSpyMedia, shows an EV2 prototype testing in the Alps with European license plates. There’s also a “Testfahrt” sticker on the back, which translates to “Test Car” in German.
As the prototype drives by, you can get a good look at it from all angles. Like in past sightings, the front features stacked vertical headlights with Kia’s signature Star Map lighting. Even the rear lights appear to be identical to those of the concept.
The interior will feature Kia’s next-gen ccNC (connected car Navigation Cockpit) infotainment system. The setup includes dual 12.3″ instrument clusters and infotainment screens in a curved panoramic display. Depending on the model, it could also include an added 5.3″ climate control screen.
Last month, a crossover coupe-like model was spotted on a car carrier in Korea, hinting at a new variant. The new model featured a design similar to that of the Genesis GV60.
Kia’s CEO, Ho Sung Song, also recently told Autocar that a smaller, more affordable EV was in the works to sit below the EV2. Song said the new EV, priced under €25,000 ($30,000), was “one area we are studying and developing.”
With the EV4 and EV5 launching this year, followed by the EV2 in 2026, it could be closer toward the end of the decade before we see it hit the market. Next-gen EV6 and EV9 models are also due out around then.
The Kia EV2 is set to launch in Europe and other global regions in 2026. Unfortunately, it’s not expected to make the trip to the US.
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