“Fort Renewable” Shows Benefits of Batteries & Microgrids for Military & Beyond
High winds, a beaming sun, a remote landscape — the National Renewable Energy Laboratory’s (NREL’s) Flatirons Campus might be a familiar environment to military servicemembers. Here at “Fort Renewable,” down a dirt road from the main research campus, military Quonset huts are dispersed among energy assets like solar photovoltaics and battery storage.
Compared to a real military base, the Fort Renewable setup is not so much forward-operating as forward-thinking, with its own critical mission: to design high-renewable systems for secure applications. With unique cyber and physical capabilities, NREL’s microgrid research platform is the scene of large-scale grid demonstrations that are helping the military, microgrid, and energy storage industries transition past technical barriers toward extreme renewable integration.
Quonset huts at NREL replicate military microgrid environments so that DOD and partners can reliably evaluate energy security with renewables and battery storage.
Quonset huts at NREL replicate military microgrid environments so that DOD and partners can reliably evaluate energy security with renewables and battery storage.
Quonset huts at NREL replicate military microgrid environments so that DOD and partners can reliably evaluate energy security with renewables and battery storage.
A Competition To Create Quality Microgrids
Microgrids are nothing new to the military, and especially nothing new for NREL–Department of Defense (DOD) collaborations. But as new threats emerge on energy systems — generally cyber and environmental — the DOD is now looking to bolster its backup power with battery storage, in place of a current preference for diesel generators.
“We’ve had military microgrids for 20 years now,” said Brian Miller, a senior NREL researcher and microgrid research lead. “But we didn’t have batteries back then, and very little solar.”
Relying on diesel generators alone could put microgrids at risk. If a true disaster scenario takes down the grid for an extended period, the military’s old diesel generators would not survive multiweek outages.
“Renewables and battery storage have the potential to last longer on fuel supplies and provide important energy diversity,” Miller said.
To discover the best microgrid-storage implementations across its diverse sites, the DOD arranged a unique program that is half competition, half technology accelerator. Under the program, the early-stage companies have been invited to validate their microgrid solutions on progressively more realistic grid systems, and progressively more challenging platforms. This way, companies can quickly gain field experience, DOD can confidently invest in its own microgrid improvements, and the experimental results will be widely available as stakeholder resources.
The project is facilitated through the DOD Environmental Security Technology Certification Program (ESTCP) and therefore inherits the program’s goal of assisting early-stage commercial products past the difficulties of breaking into the market. Each participating company is matched with an industry principal investigator, forming teams of two that apply the commercial concepts to real microgrid operations.
The validations got underway in 2020. While each of the participating teams are ultimately striving to prove their technologies at an actual DOD base, they first must advance through two lower-fidelity trials. These initial validations are taking place at NREL, where energy systems can be emulated to exact similarity under most any scenario.
Building Military Microgrids at a Replica Base
In preparation for the program, NREL refashioned its world-class power systems research platform ARIES into a distributed military microgrid — off-grid as a DOD base might be, but with high-performance experimental assets like weather stations and six-strand fiber optic communication links. At NREL’s Fort Renewable, DOD and participating companies have now been able to truly validate and derisk commercial microgrid systems.
Each team’s microgrid-battery storage solution is tested against emulated power outages, which the microgrid controls must be capable of managing.
Each team’s microgrid-battery storage solution is tested against emulated power outages, which the microgrid controls must be capable of managing.
Phase 1 of the program brought seven teams to NREL, where their microgrid-storage concepts were plugged into virtual systems and analyzed with simulated operations. This first phase validated teams’ technologies on a model military base, testing whether the devices could respond with a baseline level of performance, and filtered the number of participating teams down to four. Phase 1 results are available on the ESTCP website.
Phase 2 of the project raised the bar higher: Teams have submitted their technologies to more rigorous validations on a near-exact approximation of DOD’s Naval Air Station Patuxent River (NAS Patuxent River) — a 34-MW Air Force base in Maryland — replicated right inside NREL.
“Our platform is built such that users can prove their designs for islandable microgrids that are able to provide power in a long-duration emergency at a reasonable cost,” said Miller, who led the development of the military microgrid research platform. “Doing a study is one thing, but you can’t pencil whip whether a power hardware is successful. That’s why these companies come to NREL. If they can leverage our capabilities, it’s huge.”
Miller, himself once a major in the U.S. Air Force, has a career’s worth of energy resilience experience drawn from service overseas and across the United States, and used his background to build out the replica research environment.
The research platform involves about 250 kW of hardware, which is variously swapped with teams’ technologies — everything from microgrid switches and controllers to batteries. The teams rely on NREL for the rest of the microgrid environment: power and grid emulators, SCADA networks, switchgear, load banks, renewable resources, and a replica of the NAS Patuxent River grid.
And that covers just the hardware. The full platform crosses nearly every lab space in NREL’s Energy Systems Integration Facility and connects out to the Flatirons assets miles away. An integrated Cyber-Energy Emulation Platform (CEEP) digitally emulates communications and controls for the microgrids, while a vast sensor network simultaneously collects power data at all points throughout the microgrid and visualizes interactive metrics in real time. All told, the military microgrid research platform is as close to real as the teams will experience until Phase 3.
Microgrid Lessons for a Larger Grid
Each team has a different approach to microgrid-storage solutions: One is using redox-flow batteries, others bring their own microgrid controllers, and another is validating lithium iron phosphate battery storage. As of Phase 2, the participating teams are led by Ameresco, the Energy Power Research Institute, Raytheon, and SRI and Arizona State University. Cummins, which helped NREL build out the military microgrid research platform and contributed its microgrid controller to the design, has also thrown its hat into the program. NREL could not resist entering the action as well.
The teams have an important stake in the program — successful validations could carry their products from relative obscurity to energy markets anywhere, with the bonus of being proven in highly demanding applications. But the larger energy industry stands to gain something more: The demonstrations are establishing first-ever data around what works for critical applications of energy storage in microgrids.
“This project is about learning how critical loads can survive disaster and outage scenarios,” said Martha Symko-Davies, laboratory program manager of the ESIF. “We’re not validating microgrids for the military only; we want to do this for the whole country. Future campuses and microgrid systems will look to this project for examples, and to NREL for microgrid research capabilities that exist nowhere else.”
In this perspective, project teams endure the hardest tests so that future microgrids can better survive worst-case scenarios. NREL validations force difficult decisions that a critical microgrid could encounter, like choosing between multiple critical loads. For participating teams, their early-stage concepts that have scarcely seen commercial applications are up against disasters that any system would hope to never see, but nevertheless must prepare for.
“Some universities maintain billion-dollar inventories of temperature-controlled cell cultures, for example. This is a critical load compared to other buildings on campus, and a functional microgrid should be able to allocate power accordingly,” Miller said.
NREL is advancing distributed grid and microgrid control and optimization solutions through research such as Autonomous Energy Systems and products like OptGrid.
Beyond specific technologies, this ESTCP evaluation program is creating important knowledge for microgrids generally. Networked microgrids are an upcoming approach for accommodating distributed energy while enhancing resilience against future threats. Likewise, the Autonomous Energy Systems portfolio of work is developing microgrid controls for autonomous configuration and operation of connected microgrid systems. In each topic, the ESTCP program is showing what critical microgrid operations look like — the real results of applying renewable energy assets to resilience events.
As the participants move to Phase 3 of the program — installation at one of seven DOD microgrid sites — industry moves one step closer to resilient renewable microgrids. For all the expectations that microgrids and renewables could reliably support critical loads, a new class of commercial players is arriving with the first data to show exactly how.
Article courtesy of NREL.
The Honda Prologue continues to surprise, ranking among the top ten most leased vehicles (gas-powered or EV) in the US in the first quarter. It was the only EV, outside of Tesla’s Model Y and Model 3, that made the list.
Honda Prologue EV is one of the most leased vehicles
After launching the Prologue in the US last March, Honda’s electric SUV took off. In the second half of the year, it was the second-best-selling electric SUV, trailing only the Tesla Model Y.
The Prologue remains a top-selling EV in the US this year, with over 13,500 units sold through May. That’s not too bad, considering it only sold 705 through May of last year.
According to a new Experian report (via Automotive News), Honda’s success is being driven by ultra-affordable lease rates. In the first quarter, nearly 60% of new EV buyers in the US chose to lease, up from just 36% a year ago.
Three EVs ranked in the top ten most leased vehicles in Q1, including the Tesla Model Y, Model 3, and Honda Prologue.
Tesla’s Model Y and Model 3 took the top two spots, while the Honda Prologue ranked number seven. Those who leased Tesla’s Model 3 paid $402 per month, Honda Prologue lessees paid $486 a month.
Given the average loan rate was $708 a month for those who bought it, it’s no wonder nearly 90% chose to lease. Under 9% chose to buy, while less than 2% paid cash.
The discounts are piling up, but for how long?
To give you a better idea, the average monthly payment for a new vehicle lease in the US in the first quarter was $595.
With over $20,000 in discounts, Honda’s luxury Acura brand is selling a surprising number of EVs in the US. The nearly $65,000 Acura ZDX is sold for under $40,000 on average in May, according to Cox Automotive’s EV Market Monitor report for May.
The trend is primarily thanks to the $7,500 federal EV tax credit, which is being passed on to customers through leasing.
With the Trump administration and Senate Republicans aiming to kill off federal subsidies, the savings could soon disappear. If the Senate’s recently proposed bill is passed, the $7,500 credit would expire within 180 days. It would not only make electric vehicles more expensive, but it would also put the US further behind China and others leading the shift to electrification.
Some automakers, including GM, are expected to continue offering the incentives. “GM has been very competitive on the incentives on their end, and that is not scheduled to end.”
After outselling Ford, GM’s Chevy is now the fastest-growing EV brand in the US through May. Chevy is starting to chip away at Tesla’s lead, largely thanks to the new Equinox EV, or “America’s most affordable +315 range EV,” as GM calls it.
According to Xperian, those who leased a new Chevy Equinox EV in Q1 paid $243 less than those who financed it. The electric Equinox stood out in Cox Automotive’s EV Market Monitor report with an average selling price under $40,000, even without incentives.
The Chevy Equinox EV remains one of the most affordable EVs on the market. Starting at just $34,995, the base LT FWD model offers an EPA-estimated range of 319 miles.
After Hyundai cut lease prices earlier this month, the 2025 IONIQ 5 might just take the cake. You can now lease the 2025 Hyundai IONIQ 5 (now with a built-in NACS port) for as low as $179 per month.
Looking to test out some of the most popular EVs for yourself? With Honda Prologue leases as low as $259 per month and Chevy Equinox EV leases starting at just $289 per month, the deals are hard to pass up right now while the incentives are still here. You can use our links below to find models in your area.
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The US energy storage market just posted its strongest Q1 ever, adding more than 2 gigawatts (GW) of capacity across all segments, according to the latest US Energy Storage Monitor from Wood Mackenzie and the American Clean Power Association (ACP).
That makes Q1 2025 the biggest first quarter for energy storage in US history.
The surge was led by utility-scale projects, which accounted for over 1.5 GW of the new capacity, a 57% jump compared to Q1 2024.
Surging energy demand is putting the electric grid under strain,” said John Hensley, SVP of markets and policy analysis at ACP. “The energy storage market is responding to help keep the lights on and support this unprecedented growth in an affordable and reliable way.”
But that momentum is now bumping up against policy uncertainty that could derail growth in the near future.
Indiana shows what’s possible
Energy storage is no longer limited to early-adopter states like California and Texas. In Q1, Indiana added 256 megawatts (MW) of new energy storage, quadrupling its total installed capacity. It now has more than 10 GW of new storage in its interconnection queue, the fifth-largest in the country.
Indiana’s growth is being driven by available land and clear permitting processes, two major barriers in other states.
“We’re now seeing significant deployment in emerging markets like Indiana, while states across the Southwest like Nevada and Arizona continue to expand their energy storage portfolio,” said Noah Roberts, VP of Energy Storage at ACP.
Home battery boom
Residential storage also set a new record, with 458 MW installed in Q1, the most ever in a single quarter. California and Puerto Rico led the way, accounting for 74% of that growth, while Illinois and other emerging markets began to pick up pace.
Trouble on the horizon
Despite a strong near-term outlook, the long-term picture is cloudier. The five-year forecast for utility-scale storage remains solid, but looming changes to federal policy could slash future growth.
If proposed changes to the Investment Tax Credit (ITC) in the House’s reconciliation bill become law, the total storage buildout over five years could fall 27% below the current base case.
- Distributed storage would take the biggest hit, with a projected 46% drop.
- Utility-scale storage could shrink by 16 GW.
The CCI (community, commercial, and industrial) segment has already seen a 42% cut in its five-year outlook, weighed down by tariff risks and slow adoption of California’s NEM 3.0 rules.
The Q1 2025 results demonstrate the demand for energy storage in the US to serve a grid with both growing renewables and growing load,” said Allison Weis, global head of energy storage at Wood Mackenzie. “However, the industry stands at a crossroads, with potential policy changes threatening to disrupt this momentum.”
In the near term, the report expects 15 GW/49 GWh of new storage capacity to be installed across all segments in 2025, with utility-scale installations projected to grow 22% year-over-year. However, the utility-scale segment is at risk for a potential 29% contraction in 2026 due to policy uncertainty.
Bottom line: the energy storage boom isn’t slowing down – yet. But all eyes are on Congress.
Read more: This new San Diego battery can power 200,000 homes during peak hours
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Environment
Cadillac just delivered the first Celestiq, a hand-built ultra-luxury EV that costs $350,000
The Celestiq is more than an ultra-luxury electric sedan. Cadillac is saying it “marks a new milestone in American luxury and innovation.” The ultra-luxury EV is hand-built at Cadillac House at Vanderbilt, but it’s not cheap. Cadillac’s flagship electric sedan starts at around $350,000.
Cadillac delivers the first ultra-luxury Celestiq EV models
Cadillac is back and better than ever. After delivering the first Celestiq models to customers on Tuesday, Cadillac said it’s out to re-establish the brand as the “Standard of the World.”
The ultra-luxury electric sedan was delivered during a private event at GM’s Global Tech Center in Warren, Michigan.
Each Celestiq model is hand-built at Cadillac House at Vanderbilt, where you can customize the vehicle through a “highly personalized experience.” Cadillac designers and engineers wanted to create the most technologically advanced vehicle possible.
Although the Celestiq was first unveiled in 2022 and was expected to go into production in 2023, the ultra-luxury EV arrives with a slight increase in power.
The electric sedan features a dual-motor AWD powertrain, packing 655 horsepower and 646 lb-ft of torque (with Velocity Max), good for a 0 to 60 mph sprint in 3.7 seconds. Powered by a massive 111 kWh battery, Cadillac says its flagship EV has a range of 303 miles.
Inside, you’ll find ample screen space with a 55″ advanced interactive display that spans the entire dashboard. It’s Cadillac’s first vehicle to feature five standard HD interactive displays, including two 12.6″ entertainment screens for rear passengers.
Other interior features include a panoramic Smart Glass Roof with four independently controlled sections, a 38-speaker AKG audio system, and Climatesense, a “world first” four-zone microclimate system.
Each Celestiq is built to order and assembled at GM’s new Artisan Center on its campus in Warren, Michigan. Prices start in the “mid-$300,000 range.” You can inquire for more information on Cadillac’s website.
Electrek’s Take
Cadillac is coming off one of its best sales quarters since 2008. With a full lineup of electric SUVs, Cadillac is aiming to be the bestselling luxury EV brand in the US this year.
With the entry-level Optiq, midsize Lyriq, three-row Vistiq, and massive Escalade IQ, Cadillac offers an EV in nearly every segment.
Earlier this week, GM announced that the 2026 Cadillac Optiq will be its first vehicle to launch with a built-in NACS port, allowing it to access Tesla’s Supercharger network.
Although Cadillac said the Celestiq would help re-establish the brand as the “Standard of the World,” it will likely play only a minor role. The Optiq, Lyriq, Vistiq, and Escalade IQ will be the growth drivers over the next few years in a competitive luxury EV market.
GM said over 75% of Optiq buyers were new to Cadillac last month. After delivering the first models in late 2024, Cadillac sold over 1,700 Optiqs in the first quarter, outpacing Mercedes-Benz, Genesis, and other luxury rivals in the US.
Looking to test out Cadillac’s new electric SUVs for yourself? We can help you get started. Check out our links below to find Cadillac Optiq, Lyriq, Vistiq, and Escalade IQ models available in your area.
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