Why Grid-Interactive Efficient Buildings Feature Prominently in Joe Biden’s Plans
Originally published on RMI.org.
By John Matson
The White House on May 17 announced a slate of new programs aimed at integrating US buildings into the clean energy economy. The initiatives include electrification programs for existing homes, workforce training for next-generation jobs in the buildings sector, and efforts to increase the adoption of efficient electric heat pumps and EV fast chargers.
Alongside the plans for job training and building electrification, the announcement also highlighted the Biden administration’s goals for grid-interactive efficient buildings — a less well-known approach that has significant potential to reduce carbon emissions.
In this blog post, we’ll explore what grid-interactive efficient buildings are and why they feature so prominently in plans for a clean energy future.
What Are Grid-Interactive Efficient Buildings?
A grid-interactive efficient building (GEB) continuously optimizes energy use by combining efficiency measures such as LED lighting, efficient heat pumps, and high-performance windows with smart technologies such as solar, battery storage, and integrated building controls. Rather than simply consuming energy from the grid based on the building’s baseline energy use and occupant demands, a GEB interacts with the grid to continuously manage its demand in response to key signals from the electric utility.
To save money, reduce strain on the grid, or limit carbon emissions from electricity generation, a GEB might shed load (e.g., automatically dimming LED lights throughout the building) or shift its load from one time to another (e.g., drawing from on-site batteries rather than the grid) in a practice known as demand flexibility, or load flexibility.
What Is Demand Flexibility?
Demand flexibility is a building’s ability to shed or time-shift its energy demand in response to near-real-time signals about conditions on the grid. Demand flexibility signals can include the current price of electricity, the availability of renewable energy sources such as solar and wind, and the carbon intensity of the current energy mix. For instance, a GEB might employ demand flexibility to shift its peak electricity demand to a time of day when solar energy is abundant and might otherwise be curtailed.
Demand flexibility offers significant promise for reducing the carbon emissions from building operations, especially as the grid integrates more distributed energy resources. But the benefits can extend beyond cost and carbon savings. As detailed in a new RMI insight brief, buildings that flex their demand can shift energy away from peak usage times, when utilities often rely on fossil-burning “peaker” plants to help meet surging demand. Demand flexibility can therefore reduce the need for these peaker plants, eliminating not only their carbon emissions but also their significant contributions to air pollution.
What Are the Potential Benefits of GEBs?
The potential energy, emissions, and cost savings from combining energy efficiency and demand flexibility in GEBs are substantial. Buildings account for more than 70 percent of US electricity consumption and at least one-third of US emissions, according to the US Department of Energy’s Building Technologies Office (BTO). A new GEB roadmap from the BTO estimates that smarter, more efficient buildings can eliminate 80 million tons of CO2 emissions annually by 2030, reducing the emissions of the entire US power sector by 6 percent. The emissions savings from GEBs would be equivalent to retiring more than 50 midsize coal plants or taking 17 million cars off the road.
Widespread adoption of GEB technologies would reduce peak loads on the grid, which would in turn reduce the needed capacity of the grid to meet those demands. The cost savings of GEBs would therefore extend beyond the owners and tenants of the GEBs themselves. By 2040, the BTO calculates, GEBs could save the US power system more than $100 billion in cumulative electricity generation and transmission costs.
What Are the New US Goals for GEBs?
In the GEB roadmap, released May 17 in conjunction with the White House announcement, the US Department of Energy laid out a goal of tripling the energy efficiency and demand flexibility of buildings by 2030, relative to 2020 levels. To reach that goal, the roadmap articulates 14 recommendations, from enhancing R&D for smart-building technologies to policy options for encouraging integration of GEB practices.
Among the roadmap’s recommendations is that government agencies should “lead by example” — deploying GEB measures in government-owned buildings to demonstrate the benefits and provide valuable insights and best practices for more widespread deployment. Already, the vast majority of US states have adopted requirements for energy usage or efficiency in government buildings, and demand flexibility could become a valuable tool for meeting those requirements.
At the federal level, the savings from GEBs would be significant. The US General Services Administration (GSA) is the nation’s largest landlord, with nearly 10,000 buildings and more than 375 million square feet of real estate under its control. In a 2019 cost-benefit analysis, RMI found that the GSA could save $50 million annually (about 20 percent of its energy expenditures) by implementing GEB measures across its portfolio of buildings. In all six locations that RMI studied in the GSA analysis, the payback period for GEB improvements was less than four years (and in some cases less than a year), demonstrating the soundness of the investment for the government and for taxpayers.
Next Steps at the Federal Level
A new report from the National Renewable Energy Laboratory (NREL) provides a blueprint for the GSA to select buildings that are ideal candidates for cost-effective GEB projects. The report also lays out strategies and best practices for integrating GEB measures into the various phases of contract development for energy-focused building retrofits.
The NREL report notes that the sheer number of buildings managed by the GSA would allow the agency to screen its real estate portfolio for the highest-value GEB candidates before applying the early lessons learned in implementing GEB measures in performance contracts. NREL also notes that the buildings with the greatest economic potential for grid-interactive efficiency tend to share features such as time-of-use energy rates, high demand charges for a building’s peak energy usage, or utility or state programs that incentivize utility customers to be responsive in their energy demand.
One of the challenges identified by the new reports from BTO and NREL is the maturity and availability of some technologies that would optimize GEB implementation. Systems for coordinated, whole-building automation in response to signals from the grid are among the emerging technologies that will be needed to maximize GEBs’ benefits. The GSA’s Proving Ground program is evaluating some of these building control systems in demonstration projects, and the learnings from those evaluations should help to further shape best practices for implementing GEB projects nationwide.
The Path to 2030 and Beyond
By integrating energy efficiency, distributed energy generation technologies, and demand flexibility into its buildings, the GSA can help to advance the state of the art in grid-interactive efficient buildings. The proof points from GEB projects in the federal government’s building portfolio will not only help advance the DOE goal of tripling demand flexibility and efficiency measures by 2030. They should also make for a cleaner, more resilient grid powering smarter, more efficient buildings—all while saving taxpayers money.
GM has unveiled the new version of the Chevy Bolt, its popular, affordable EV with an upgraded battery and an otherwise very similar package to its last iteration, and we’re on the scene at the unveiling at Universal Studios Hollywood to get you all the info you need.
The Chevy Bolt was originally released in the 2017 model year. It was GM’s first real, modern effort at an EV, designed to be all-electric rather than a compliance car like the old Chevy Spark EV. (GM did previously design the EV1 from the ground up, but it came along before the lithium ion era of EVs, and was decidedly a compliance car).
It was also a great car. Not only was it a good size unlike the ridiculous land yachts we’re seeing so many of today, it had a phenomenal price, especially near the end of the model’s life. It was good enough to be Electrek’s vehicle of the year for 2022.
But, due to an extended recall and because the Bolt used GM’s first-gen EV platform, rather than its whiz-bang new “Ultium” system, GM retired the vehicle in late 2023, even though it was having its best sales year ever.
But, that wasn’t the end for the model. After declaring the Bolt dead but before ending production on it, GM said that it would bring back an Ultium-based Chevy Bolt (which our publisher Seth Weintraub has taken to calling the “Boltium”).
And now, it’s finally time for the official unveiling, and we’re on hand at Universal Studios Hollywood for a “Bolt Block Party” showing off the new vehicle.
Meet the new Bolt, same as the old Bolt
When Chevy retired the Bolt and said they would bring it back later, we expected it to be similar, but perhaps not this similar. From the exterior, the new Bolt and the old Bolt EUV are nearly indistinguishable.
The front fascia is slightly modified with a black line between the headlights and no black border around the fake grille, and the rear has different taillights (lifted higher, a big demand from Bolt owners), and slightly more paint on the bumper. That’s about it. But we knew all that already, after seeing it charging in public last week.
Now we’re getting information on the interior and specs, which are the juicy updates we were hoping to hear changes on.
GM hasn’t publicized 0-60 times yet, but the Bolt will use the same motor as the Equinox EV, which gives 210hp. That’s about the same as the previous Bolt, and it weighs a similar amount, so we’re imagining similar performance as the 6-ish seconds 0-60 of the previous Bolt – peppy and more than enough for any daily needs, but not a sportscar.
In particular, the original Bolt’s main technical limitation was its low DC charge speed. It maxed out at 50kW, but often was even slower than that. In a world where many vehicles can now charge at 200kW+ speeds, the new Bolt needed an update.
Thankfully, it got one. The new Bolt is now capable of a 150kW charge rate, with a 10-80% charge in 26 minutes. GM says this is about three times faster than the previous generation.
This is due to a new 65kWh LFP battery, utilizing GM’s Ultium EV platform. The previous Bolt used LG cells, and was built before GM developed Ultium. This led the Bolt to be the only vehicle in GM’s EV stable on a different technology, and is what necessitated its retirement and retooling.
The new battery also offers different specs, with 255 miles of range (GM estimate). That’s a bit more than before, which is nice, plus you can charge to 100% every night because it’s LFP. But the DC charge speeds are really the bigger story here. Faster DC charge rates enable more seamless roadtrips.
Further enabling those roadtrips is the Bolt’s new NACS port, allowing it to use the Tesla Supercharger network. An adapter is still available to use on CCS networks, but Superchargers are typically a better experience, and the whole industry is moving in that direction at this point.
Another major change is in the Bolt’s software. The previous one had CarPlay, but this one won’t.
A lot of people are unhappy about that, and I understand the unhappiness. People have gotten used to CarPlay (or Android Auto), and lots of people love it, because it’s so much better than the software from whatever 2010s-era vehicle they came from. Infotainment systems have been horrendous in vehicles for a long time.
However, I argue that these phone-based car UIs aren’t actually that great. They are inherently generic, and unable to be tied deeply into vehicle functions in a way that provides a single coherent interface. That’s why I actually liked the UI in the Blazer EV, GM’s first implementation of its post-CarPlay solution, and continue to think that GM made an acceptable choice here.
So, I do think the Bolt UI will turn out okay. GM may take a little time to iron out some kinks, but in the longer term, I think this solution is better, and will enable over-the-air updates which saves time and trouble for everyone.
The interior has had a refresh with larger display, added ambient lighting, and cupholders which can be rearranged to accommodate larger cups. It also has more dash storage for passengers.
Rear cargo space is the same as the outgoing Bolt EUV at 16 cubic feet with the seats up, or 57 with the seats down. Incidentally, with the seats down, this is actually the same amount of cargo space as the Equinox EV, which is 20 inches longer than the Bolt. Quite a feat of packaging efficiency here.
Finally, and perhaps most importantly, the price. Chevy says the launch edition will be a limited run at $29,990, and then later will be accompanied by an LT trim with base price $28,995. That’s quite an attractive price, and as of right now, makes it the cheapest EV announced in America.
Electrek’s Take
One interesting thing about this unveiling is its timing – or rather, the timing of another unveiling which happened just about 24 hours ago. That’s when Tesla finally took the wraps off its long-promised “more affordable” EV, which turned out to just be a stripped-down version of its Model 3/Y with a still disappointingly-high $37k-$40k base price.
Tesla’s timing for that announcement could have been an attempt to steal the wind from the Bolt’s sails, but given the pricing of that vehicle compared to this one, we’re thinking that there may not be much cannibalization.
My main disappointment in the Bolt is that the new model is based on the EUV version, rather than the EV version. The previous iteration of the Bolt originally came in a smaller version dubbed the EV, with a six-inches-longer EUV version coming later. The EV actually sold in higher numbers than the EUV throughout the model’s life, but it was also available for longer.
But when Chevy announced it would bring back the Bolt, it said the new version would be EUV-only. At the time I found this folly, and I still do. We need smaller cars, not larger ones. While the EUV is still a more reasonably-sized vehicle than almost anything else on the road, I am still disappointed that it is moving in the wrong direction as far as size goes.
Nevertheless, in the current US environment where everyone seems determined to make using roads as unsafe as possible, the EUV is still smaller than the vast majority of cars available
And the price, well, that’s really the kicker. After republicans raised the price of every EV by $7,500 during an affordability crisis, with unwise tariffs also inflating consumer prices at the same time, it’s getting harder to buy a vehicle.
But the Bolt now joins the fray as one of the most affordable EVs out there, alongside the new Nissan Leaf which will cost under 30k (and even less, once a future lower-spec trim is announced), and significantly cheaper than other low-ish-priced EVs like the Equinox EV, Ioniq 5, and the aforementioned “more affordable” standard Model 3/Y.
That’s a big deal, and it makes the new Bolt a similar calculation as when it earned Electrek’s Vehicle of the Year. But now, it doesn’t even have the main downside it had at the time – its low DC charge rate, and battery questions during what was a messy recall. Both of those problems were solved here, leaving a calculation with few downsides.
We haven’t driven the car yet, though we’ll get a few minutes in it later in the event. But it’s only going to be around the block at the Universal backlot, so we can’t give a full review, but from what we’ve seen today, it looks like quite an attractive value proposition.
We’re still at the event right now for the next few hours, so if you’ve got any questions that you’d like us to check on or relay to GM employees, let us know in the comments and we’ll see if we can get some answers (especially you Bolt owners). And, we just got all this info, so we’ll be updating this article as we digest more.
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.
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New York-based Cool Down makes a thermal transfer system that moves naturally cool air from your basement into your living space while sending excess heat back down below to cool homes more efficiently. By dispersing that heat into the ground, Cool Down helps keep homes comfortable during hot summer months and cuts electricity bills in the process.
Cool Down’s system has already been shown to reduce air conditioning use by up to 67% per season by leveraging the consistent temperatures found in basements. With the release of its upgraded Smart Control Unit, the company is adding even more functionality and savings for homeowners across different climates.
The new Smart Control Unit introduces a range of intelligent features that make the system more versatile and user-friendly. Homeowners can now see their estimated energy savings in real time, giving them a clear picture of their return on investment and helping them optimize system performance. A new Basic Heating Mode means the system can now be used in winter to capture and circulate heat from areas with wood or pellet stoves, mini-splits, or rooms with south-facing windows. The addition of a Dehumidification Mode allows your AC or heat pump to dry out basement spaces just like the rest of the house, improving indoor air quality and further reducing cooling costs.
For days when comfort takes priority, Power Boost Mode temporarily ramps up cooling and dehumidification performance. Eco Boost Mode maximizes efficiency by preventing the AC or heat pump from switching on, which is ideal for shoulder seasons or mild climates. And for homes without ductwork, Standalone Mode enables Cool Down to operate as a central cooling system on its own, delivering significant cost savings even if it’s not as powerful as a traditional AC.
“The Smart Control Unit is about putting more control – and more savings – in the hands of homeowners,” said Damien Semel-DeFeo, founder of Cool Down. “These new modes allow the system to be customized for any home, climate, or energy-use goal.”
Cool Down offers a practical, low-cost alternative or supplement to traditional cooling systems as electricity rates continue to rise nationwide. The system is professionally installed in just a few hours, integrates with or without existing HVAC equipment, and requires no refrigerants, compressors, or external condensers.
Read more: Trump wants to kill ENERGY STAR – here’s how that impacts you
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.
FTC: We use income earning auto affiliate links. More.
The IONIQ 9 is about to get an upgrade. Hyundai’s new electric SUV was spotted with some serious off-road upgrades, hinting that a new XRT trim is on the way.
The Hyundai IONIQ 9 XRT brings a new off-road look
It may look like it’s straight out of the future, but Hyundai’s first three-row electric SUV is actually pretty impressive.
The IONIQ 9 offers a lounge-like interior with space than a Ford Explorer, boasts an impressive driving range, and features an interior loaded with advanced tech and digital screens. What else could you ask for?
How about an upgraded off-road version? We knew the IONIQ 9 was likely due for the XRT treatment after a camouflaged model was spotted last year rocking all-terrain tires, a souped-up suspension, and an added tow wrench on the front bumper.
Hyundai’s design boss, Simon Loasby, confirmed that two new IONIQ 9 variants, including a rugged off-road and a high-performance model, were in the works after unveiling the electric SUV last year.
According to TheKoreanCarBlog, Loasby said, “We are working on two distinct projects—N and XRT—apart from the standard lineup,” Loasby said.
After another IONIQ 9 with similar off-road elements, it seems only a matter of time before Hyundai makes it official.
The new photo from Kindelauto shows a prototype with similar upgrades to the vehicle spotted last year, including large all-terrain tires, a lifted suspension, and more.
A new video from HealerTV offers a closer look at the IONIQ 9 XRT in South Korea. The footage reveals unique tow hooks and an added XRT screen, which hasn’t been seen in the IONIQ lineup yet.
From the side, you can see the XRT model is slightly taller than the standard IONIQ 9 with off-road tires. Like the IONIQ 5 XRT, the larger electric SUV is expected to receive XRT-exclusive front and rear bumpers, side skirts, and 18″ wheels.
Inside, the IONIQ 5 XRT model features H-Trex seating with the XRT pattern, logo, and XRT-badged all-weather mats.
The 2026 Hyundai IONIQ 9 starts at $60,555 in the US with an EPA-estimated range of 335 miles. In Europe, the IONIQ 9 will start at £64,995 ($87,500), offering a WLTP driving range of up to 385 miles.
| 2026 Hyundai IONIQ 9 Model | EV Powertrain | Drivetrain | Driving Range (miles) |
Starting Price (including destination fee) |
| IONIQ 9 RWD S | 160-kW (215-HP) Electric Motor |
Rear- Wheel Drive |
335 | $60,555 |
| IONIQ 9 AWD SE | 226.1 kW (303-HP) Dual Electric Motors |
All-Wheel Drive |
320 | $64,365 |
| IONIQ 9 AWD SEL | 226.1-kW (303-HP) Dual Electric Motors |
All-Wheel Drive |
320 | $67,920 |
| IONIQ 9 AWD PERFORMANCE LIMITED |
314.6-kW (422-HP) Dual Electric Motors |
All-Wheel Drive |
311 | $72,850 |
| IONIQ 9 AWD PERFORMANCE CALLIGRAPHY |
314.6-kW (422-HP) Dual Electric Motors |
All-Wheel Drive |
311 | $76,590 |
| IONIQ 9 AWD PERFORMANCE CALLIGRAPHY DESIGN |
314.6-kW (422-HP) Dual Electric Motors |
All-Wheel Drive |
311 | $78,090 |
Since the IONIQ 5 XRT is priced below the Limited AWD trim, starting at $55,400 in the US, the new IONIQ 9 trim could follow a similar pricing structure. The current range-topping IONIQ 9 AWD Performance Calligraphy Design trim starts at $78,090.
Will the IONIQ 9 N be next? Stay tuned for more.
Want to check out Hyundai’s electric SUVs for yourself? You can use our links below to see what’s available in your area.
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