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.
From the ashes of Elon Musk’s decision to fire the whole Supercharger team last year, a new company has risen: Hubber, which will take its founders’ expertise at setting up Tesla Superchargers and apply that to addressing the lack of high-speed urban charging for taxis and other commercial vehicles.
In the immediate aftermath of this decision, a lot of questions were asked around the industry – and a lot of companies started snatching up talent from the best EV charging team in the world.
Or, alternately, some of that talent went to form their own companies. That’s the case for Harry Fox, Connor Selwood and Hugh Leckie, who met at Tesla and together oversaw the rollout of 100 Supercharger sites with 1,200 total chargers across the UK & Ireland. And after the shakeup of the Supercharger team, they set off to charge a new path of their own.
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The three formed Hubber, which pitches itself as a new type of EV charging company, focused on solving “the urban charging gap.”
Hubber describes itself as “the UK’s leading specialist in urban high-powered EV charging, addressing one of the most urgent constraints in the energy transition: the shortage of fast, reliable charging in major cities.” It “acquires and develops prime urban sites into large-scale charging hubs, combining deep grid-connection know-how with a proven ability to deliver complex infrastructure at speed”.
A large amount of the traffic in UK cities is taken up by taxis and last-mile, and these vehicles tend to see higher utilization than commuter cars, so they need to charge more often. Hubber says that taxis charge five times as often as a private vehicle, which means they’ll need more access to fast EV charging.
This is further exacerbated in urban environments, where EVs might not park in a place they can charge. Lots of urban homes don’t have garages, and while there are street EV chargers available in London, they’re not everywhere yet. So convenient fast charging is essential.
And the needs for commercial drivers are different than those of other commuters. While nicely-appointed charging plazas (like Rove’s “full service” EV charger in Santa Ana, CA) are great for the average consumer, commercial EV drivers put more of a premium on speed and affordability, and don’t mind if a site is a little further off of a main thoroughfare, or not as close to food or shopping as other drivers might want.
So Hubber is looking at sites that other developers might pass over – like old warehouses or gas stations – and figuring out how to turn them into an ideal site for high-throughput charging.
With its cofounders’ experience at Tesla, Hubber will buy sites, transform them into a charger-ready location, and essentially provide the dream location that they would have liked to see during the site selection processes they went through in their previous jobs.
The charging hubs could still have some amenities, like restrooms and vending machines, of the type that would be useful for taxi or ride-hailing drivers to grab during a quick stop. But the main focus would be on getting people in and out and back on the road.
Here’s a rendering of what a potential site might look like. In this sample location, there would be room for light-duty vehicles up front, with an area for larger last-mile delivery vehicles with larger charging bays. A small covered area could provide restrooms and vending, and another portion of the site could be dedicated to transformers, batteries and the like.
Hubber is also thinking ahead to a possible autonomous future, where driverless ride-hailing vehicles like those from Waymo could have a place to charge. Although given that there aren’t currently great solutions for autonomous charging, an attendant might have to be involved for the foreseeable future.
The company would also like to expand beyond the UK and Ireland, but they’re sticking to home base for the time being. After all, things are just getting off the ground – but the £60 million (~$81m) investment that Hubber just secured is certainly a big boost towards getting the project moving.
Speaking of projects, Hubber’s first facility is opening this coming week, on August 20th. The site is at Forest Hill in South London, near Forest Hill Station. It will have 12 EV charging bays, with 3 150kW and 3 300kW dual-head chargers. The site will be operated by RAW charging, which will offer free fast charging for its first week of operation.
The silver lining, at least for the rest of the industry, is that it allowed this talent to be distributed around to other companies. This isn’t beneficial for Tesla and did cause chaos which has likely affected the rollout of NACS, slowed EV charging site development in the US, and so on, but it has been beneficial for other companies who managed to snatch up talent.
Or, for companies like Hubber, which were formed by that talent.
It’s an interesting idea, and I like the angle of focusing on taxis in order to increase utilization of the site. EV charging is potentially an interesting business long term, but currently a lot of chargers see low usage because it’s so easy for most of the people who own EVs to charge at home.
But we’re going to have to move beyond the market of people who can easily charge in a garage attached to a single family home, especially in cities. Getting an easy way for the cars that get used the most in a city to charge is a really important move, and we’re looking forward to seeing how Hubber can help with this. And having a leadership team consisting of people who formerly worked at the best charging team in the industry isn’t a bad start.
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Indian ag and automaker Mahindra has launched a limited-run Batman Edition of its BE 6 Electric Origin SUV, calling it, “a production car that brings to life a rare fusion of cinematic heritage and modern luxury, inspired by Christopher Nolan’s critically acclaimed The Dark Knight Trilogy from Warner Bros. Pictures.”
And, you guys – the new Mahindra BE 6 is. So. Serious.
Someone at Mahindra is very taken with American culture it seems. After launching the Willys MB Jeep-inspired Mahindra Roxor a few years ago, the company followed it up by building a credible line of EVs co-developed with VW. Now, they’re building a limited edition of one of those EVs inspired by another American cultural icon.
“Batman is more than a pop-culture icon — he represents innovation, resilience, and an unyielding drive to push boundaries,” says Vikram Sharma, Senior Vice President, Warner Bros. Discovery Global Consumer Products, APAC. “This collaboration brings that spirit to the road in a bold, electric way. With this limited-edition range, fans in India can now experience the thrill of Batman every time they drive. It’s a collector’s statement on wheels.”
Pinstripe graphic and The Dark Knight Trilogy Bat Emblem across the passenger dashboard panel
Race car inspired open straps with Batman Edition Branding Batman Edition welcome animation on the infotainment display
Custom Batman inspired exterior engine sounds
Despite all the Batman branding, the end result is almost tasteful. I could do without the custom Batman decal on the front quarter panels, but the rest of the mods are far less offensive. I even like the little “Bat Signal” puddle lights on the wing mirrors.
Mahindra Batman BE 6
As a car, the special edition Batman Mahindra is based on the top-shelf version of the BE 6, fitted with a 79 kWh battery good for 550 km (about 340 miles) of range according to its WLTP rating. That battery sends power to a rear-mounted 282 hp (210 kW / 286 PS) electric motor generating and 380 Nm (about 280 lb-ft) of torque that sends power to the rear wheels.
The BE6 also features a modern Level 2 ADAS tech and screens everywhere, including in the steering wheel hub – which seems like it might get particularly nasty in an airbag deployment (but no one asked me).
Pricing starts at ₹27.79 lakh (a little under $27,500, as I type this), and production will be limited to just 300 units. Order books are set to open 23AUG.
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Electric bike and scooter safety is now part of the curriculum in some schools – and surprisingly, it’s happening in Florida.
Yes, Florida. The state that’s better known for keeping education out of schools, banning everything from books to the word “gay.” But now, a Central Florida nonprofit is stepping in to make sure students are at least learning how to ride responsibly.
The group Best Foot Forward for Pedestrian Safety has partnered with local police departments and Orange County Public Schools to bring e-bike and e-scooter safety programs directly into middle schools and high schools. The initiative is focused on addressing the growing number of crashes and injuries involving students riding electric two-wheelers.
The safety course covers basics like wearing helmets, obeying traffic laws, and making yourself visible to drivers — skills that are important for the many young riders who are increasingly taking to electric bikes as a form of independent transportation around their cities and neighborhoods. One of the main topics of the program is said to be speed management. The program addresses the importance of keeping speeds reasonable and the impacts of faster riding.
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Like much of the US, Florida has seen a surge in e-bike and e-scooter popularity among kids and teens, especially in suburban and coastal areas. While many embrace them as a fun and fast way to get around, the sudden rise has also come with a worrying spike in injuries and deaths, prompting calls for improvements in both infrastructure and education.
With e-bike usage exploding across the US, more schools and communities are exploring steps to increase rider education. It’s a sign that America’s transportation habits are changing – and our education systems are beginning to catch up.
Electrek’s Take
I think programs like this are great because they teach kids things that they’d otherwise have to learn through trial and error. We don’t just hand cars to sixteen-year-olds and say, “figure it out.” So it follows that some form of organized rider education would be important as more youths take to e-bikes than ever before.
In cycling-intensive cities in Europe, all schools teach kids to ride bikes, often giving the kids some form of cute little cycling diploma to demonstrate that they’ve passed the course and can safely ride a bike.
But at the same time, this makes me wonder if we’re still missing the point. Responding to an increase in e-bike rider deaths with lessons about bicycle speed management is a bit like responding to mass shootings by lecturing innocent passersby about why they shouldn’t run into bullets.
Educating riders is always great and I’ll always support it. But in parallel, perhaps we should also be addressing the root cause of all of these tragics deaths. At the end of the day, most electric bike-related deaths aren’t a result of an e-bike rider doing too much fast riding; they’re a result of a car driver doing too much running over a cyclist.