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An interview with architect Marc Thorpe on building a cool house powered by the sun.
Architect and Industrial designer Marc Thorpe runs a multi-disciplinary studio in New York. His innovative approach to architecture, branding and furniture design for clients including Under Armour, Moroso and Ligne Roset is rooted in the belief in an architecture of responsibility. His original designs aim to be sustainable and affordable. He recently collaborated with Stage Six (who scale social enterprise) and affordable housing social enterprise group, Échale International on a sustainable and ecologically responsible housing development in Uganda. Each home, constructed of soil bricks, has its own water tower to collect rainwater in case of drought.
I spoke with Marc about Fremont House, he and his wife’s concept home built to showcase how off-grid living can be both stylish and affordable. Our conversation has been edited for length and clarity.
What is your general architecture approach/design?
Our approach is straightforward, simple, and legible. In the case of the several homes I’ve built upstate, it’s really been more about just trying to bring some degree of taste and sophistication to the language of architecture upstate using local vernacular. But at the same time, I’m approaching it utilizing renewable technology. The short of it is to keep everything tight and local, integrate renewable tech, and push for that 100% win/win.
Marco Petrini
How did you achieve this at the Fremont House?
We wanted to test out the solar concept along with the rectilinearity of the house. How can we keep the house as passive as possible so it doesn’t lose heat and cooling?
To start, we made the entire house solar-powered. It is not tied to the grid out of the gate. So, a zero dollar energy bill. The panels are all on the roof and are designed to accommodate southern exposure. The solar powers everything — lights, internet, appliances.
We all focused on the rectilinearity of the house, which is a passive move. We used platonic forms as a square, with 90 degree angles which make for an easier opportunity to lock it up and not lose cool. It’s also naturally cross-ventilated. There is no AC in the house whatsoever.
It’s heated with a wood burning stove and an energy efficient dyson heater inside the utility room which provides heat for piping and is always maintained at 55 degrees.
In winter, we make a fire, and because it’s square, the house doesn’t lose energy. It’s easier to heat than a house with different angles. Also the house has very few windows, so we are not losing heat that way.
Marco Petrini
How did you adapt the design for different seasons? Doesn’t it get boiling hot in summer?
Summer doesn’t get boiling hot here. The house is between Roscoe and Callicoon, New York, near Lake Tana. The area stays cool and rarely gets above 80 degrees. The cross ventilation allows the heat to move through the house naturally, it rises and goes straight out the window.
It’s also possible, if you need it, to put in an electric heat pump and a mini-split would provide AC.
Your Habitable score shows … wow, you barely have any climate risk! Not even for heat! Were you aware of that when you built here?
I didn’t know this when we were building, but I always knew the climate was super moderate here. There is lots of rain, lots of sun. It’s sort of a perfect place and also gets a lot of snow.
What decisions did you take to build the Catskill House for its environment?
We mostly had to work around hot and cold.
Also the roof panels are black and the roof is black so it retains heat. And when there is snowfall on it, the black has a faster heat coefficient to warm the snow so it melts quicker. The roof also is on an angle so the snow will fall right off — a natural cleaning too.
Marco Petrini
What would you have done differently now that you are living in it?
We finished Fremont House at the end of last year. So as of December 1, it will have been one full year.
Lessons learned? Its’ a two-story. In the future, we will build a one story. There’s just an ease of access to the roof when you need to get up there. Cleaning windows on the second level is a pain.
Otherwise, everything works perfectly. In the dead of winter, the house can heat up from freezing to 70 within a few hours. It has a small footprint, only 1,000 square feet (500 up and 500 downstairs) so a fire warms the whole house.
For the next house we do in North Branch that we are building to sell, we will execute a lot of these lessons. We will use the same approach and build according to the same concepts.
What are your three top takeaways for people who want to live off grid
1. Just take the position of being autonomous. Understand that you don’t need to rely on the system, on the grid. You don’t need to rely on anything. You can take responsibility for yourself and do it on your own.
2. You don’t need to sacrifice design to have a sustainable home. There’s a stigma around some of this stuff that is unjustified. It’s possible to have a well-designed home that is fully functioning without the powers pushing fossil fuels as the only solution.
3. There are so many opportunities to get off the grid: solar, geothermal, and other technologies. It’s worth the effort.
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On boasts and brags, clean power installations, and dirty air
Current conditions: Strong winds helped spark dozens of fires across parched Texas • India’s Himalayan state of Uttarakhand experienced a 600% rise in precipitation over 24 hours, which triggered a deadly avalanche • The world’s biggest iceberg, which has been drifting across the Southern Ocean for 5 years, has run aground.
President Trump addressed Congress last night in a wide-ranging speech boasting about the actions taken during his first five weeks in office. There were some familiar themes: He claimed to have “ended all of [former President] Biden’s environmental restrictions” (false) and the “insane electric vehicle mandate” (also false — no such thing has ever existed), and bragged about withdrawing from the Paris climate agreement (true). He also doubled down on his plan to boost U.S. fossil fuel production while spouting false statements about the Biden administration’s energy policies, and suggested that Japan and South Korea want to team up with the U.S. to build a “gigantic” natural gas pipeline in Alaska.
On the same day as the speech, new tariffs on imports from Canada, Mexico, and China came into effect, triggering retaliatory duties and causing stock markets to plunge. Experts are busy trying to figure out what it all means for American businesses and consumers. As Heatmap’s Robinson Meyer explained, the tariffs are likely to make electricity prices go up, raise construction costs, make gas more expensive at the pump, and make new cars costlier. Fossil fuel firms aren’t thrilled. The American Gas Association said the 10% tariff on Canadian natural gas “indicates potential impacts totaling at least $1.1 billion in additional costs to American consumers per year.” Chet Thompson, CEO of the American Fuel & Petrochemical Manufacturers, said that “imposing tariffs on energy, refined products, and petrochemical imports will not make us more energy secure or lower costs for consumers.”
Commerce Secretary Howard Lutnick has implied Trump might lift these tariffs as soon as today, but TBD.
The Trump administration has ended a program that monitored the air quality at more than 80 U.S. embassies and consulates around the world, citing “budget constraints.” The program started in 2008 with the U.S. embassy in Beijing and expanded from there. The data collected, which was posted on the AirNow website, has been used in academic studies and credited with helping reduce pollution levels in the host countries, leading to better health outcomes. This move “puts the health of foreign service officers at risk” and could hinder research and policy, Dan Westervelt, a research professor at Columbia University’s Lamont-Doherty Earth Observatory, toldThe New York Times.
Clean power installations soared in the fourth quarter of 2024, sending total operational capacity above and beyond the 300 gigawatt mark, according to a new report from the American Clean Power Association. “It took more than 20 years for the U.S. to install the first 100 GW of clean power, five years to install the next 100 GW, and three years to install the most recent 100 GW,” the report says. Here are some takeaways:
ACPA
China plans to ramp up its efforts to rein in emissions, expanding its emissions trading system beyond power plants to to include industries such as steel, aluminum, and cement, Premier Li Qiang said in a report this week. “Li also confirmed China intends to continue to play a key role in diplomacy on emissions reduction, as the U.S. retreats from international cooperation,” Bloombergreported. The country plans to roll out major climate projects such as offshore wind farms, “new energy bases” across its deserts, with a goal of reaching peak emissions before 2030. China is the world’s largest emitter of greenhouse gases, and while it has been rapidly expanding renewable power generation, it also struggles to wean itself off coal.
The Supreme Court yesterday watered down the Environmental Protection Agency’s authority to regulate water pollution, siding with the city of San Francisco in an unusual lawsuit pitting the liberal hub against the environmental authority. In a 5-4 decision, the justices said the agency had overstepped its authority under the Clean Water Act when it issued permitting for a San Francisco wastewater treatment plant that empties into the Pacific. The permit included provisions that would have made San Francisco authorities responsible for ensuring the water quality in the Pacific met EPA standards. Justice Samuel Alito essentially wrote that the permitting rules were too vague. “When a permit contains such requirements, a permittee that punctiliously follows every specific requirement in its permit may nevertheless face crushing penalties if the quality of the water in its receiving waters falls below the applicable standards,” Alito wrote. The ruling will make it harder for the EPA to limit water pollution. Next up on the SCOTUS docket: nuclear waste!
Bernard Looney, the former CEO of oil giant BP, is the new boss of an AI startup that tells businesses how to cut their emissions.
A conversation with Resources for the Future’s David Wear on the fires in the Carolinas and how the political environment could affect the future of forecasting.
The Wikipedia article for “wildfire” has 22 photographs, including those of incidents in Arizona, Utah, Washington, and California. But there is not a single picture of a fire in the American Southeast, despite researchers warning that the lower righthand quadrant of the country will face a “perfect storm” of fire conditions over the next 50 years.
In what is perhaps a grim premonition of what is to come, several major fires are burning across the Southeast now — including the nearly 600-acre Melrose Fire in Polk County, North Carolina, a little over 80 miles to the west of Charlotte, and the more than 2,000-acre Carolina Forest fire in Horry County, South Carolina. The region is also battling hundreds of smaller brush fires, the smoke from which David Wear — the land use, forestry, and agriculture program director at Resources for the Future — could see out his Raleigh-area window.
Wear is also the co-author of a study by RFF and the U.S. Forest Service that came out in late 2024 and singled out the Southeast as facing a “particularly worrisome” rise in wildfire risk over the next half-century. I spoke with him this week to learn more about why the Carolinas are burning and what the future of fire looks like for the region. Our conversation has been edited and condensed for clarity.
When discussing fires in the American West, we often talk about how historic suppression efforts are responsible for the megafires we see today. What was the historic fire regime like in the Southeast? What’s going on to make it a hot spot for wildfires?
First, there are the similarities. Both Western and Southeastern forests, especially pine forests, are fire-adapted systems; they need regular fires to maintain health. Anything that takes those forests out of balance is a problem, and fire suppression is an issue in the East and the West, and especially in the Southeast. But forests in the Southeast are the most heavily managed forests in the country — perhaps in the world. In many cases, they’re regularly burned; the South does more prescribed burning than the rest of the country combined. It’s a very, very common practice in this part of the world.
So we shouldn’t be surprised that there is fire in Southeastern forests. There have been big, episodic fires in the South, though they’re not as common. There was the fire in 2016 in East Tennessee, from the Smokies into Gatlinburg, with a number of fatalities and lots of structures damaged or destroyed. There have been big fire years in east and west Texas. And there have been big fire seasons in Florida, though it’s been a while.
How is population growth in the Southeast adding to the strain?
We’re accustomed to talking about the wildland-urban interface in the West, but it’s also a big issue in the Southeast. Some of our urban growth centers in the Southeast include the Raleigh-Durham area, where I live, and Atlanta, Nashville, and Florida. These are generally flat landscapes, as well as very heavily forested landscapes. As the population grows out of the city centers, they go into pine and mixed-pine hardwood forests that are fire-adapted ecosystems. Then you have interspersed communities with forest vegetation, and that’s a big issue.
I also read in your report that much of that land is privately owned, which makes management tricky.
Private ownership is about 89% of forests in the South. [Editor’s note: By comparison, only about a third of forests in the West are publicly owned.] Even where you have public ownership, a lot of that is by the Department of Defense and concentrated in a couple of different areas in the Ozarks and southern Appalachians. Much of the landscape in the coastal plain and Piedmont — which is most of the South — is predominantly private ownership.
There’s a distinction to be made between commercial owners, like timber investment management companies or real estate investment trusts, who actively manage landscapes. With timber harvesting, there are a lot of risk mitigation activities and a lot of prescribed burning. But then you have over a million non-industrial private landowners with small holdings. If you’re trying to coordinate any kind of wildfire mitigation scheme using fuel treatments and the like, it requires some work.
Horry County, South Carolina, and Polk County, North Carolina, were not part of your paper’s list of counties vulnerable to wildfire. I’m curious if you think what we’re seeing now says something about the limits of the study and the data you had available, or if you have another takeaway about what’s going on.
Importantly, our study looked at long-term averages. Throughout the South, there is a fire regime, and in any given year, it is possible to have wildfires of consequence. I would point out that we were especially concerned this year because Hurricane Helene laid down an awful lot of trees and created a fuel load.
We’re also entering one of the two fire seasons in the South. Wildfire is most predominant in the spring and in the fall; it’s at those times when temperatures begin to rise but humidity remains low, and there are extended dry periods that allow the fuels to dry out. You have warm temperatures and wind in the spring, setting the stage for wildfire. Typically, that window will begin to close at the end of April because it’s pretty darn humid in the South at that point, and it’s much less likely that fuels will get dry enough to carry a fire.
The same thing happens in the fall: Temperatures may remain high, and if we don’t have a lot of precipitation and humidity — usually in October and into November — then you have the conditions right for fire. But as the climate shifts, we see the length of those seasons growing to the point where the fall is approaching the spring. Wildfires in January and February indicate that these two seasons are growing toward one another and providing a much longer season. Our paper showed that, when you account for climate change across all of those global climate models and representative concentration pathways, the windows for more wildfire activity and more intense wildfire activity are expanding.
Your paper cited wildfire risks across the Sun Belt. Today, the National Weather Service is warning of “potentially historic” fire conditions in central Texas. Can local emergency managers use your modeling to prepare for such situations?
Things like the year-to-year fire projections and the day-to-day forecasts best serve local emergency managers. Wildfire in the South is determined by the drying of fuels and temperature and humidity conditions, which vary daily. If we look over the last week, Saturday was beautiful in the Carolinas. It was sunny, in the 70s, dry, and a little windy. That was the day [hundreds of] fires started across the Southeast. And the next day, there were very few new fires. Mid-week projections of wildfire potential in the Southeast show that it’s really low, with the exception of Texas. It changes day to day, driven by fine-grain weather forecasts, and that gives emergency managers some insight into where they might want to pre-position crews or do pre-suppression activities.
What we’re doing with the modeling is asking, What is this going to look like in 50 years? The takeaway is that wildfire activity is going to remain strong and perhaps grow in the West, but the big structural change is really strong growth and active fire in the Southeast, where you have wildfire and wildlands proximal to millions of people and more vulnerable communities. It’s a fire regime that’s going to affect more people.
I also wanted to ask about the USDA Forest Service’s contributions to your paper. Do you think research like this could still happen today, given the Trump administration’s efforts to eliminate anything climate-related from the federal agenda?
I came to Resources for the Future six years ago after a long career with the Forest Service, so it’s hard for me to remain a dispassionate scientist here. I think we need to see how the dust settles. It’s hard to imagine a future where the agency and federal government do not have a high level of concern regarding fire — and I don’t think you can do any kind of effective planning, or thinking about the future, or targeting of activities without understanding how climate is likely to impact these disturbance regimes.
I don’t have the crystal ball that many people are seeking right now. We’ll have to wait to see. But our research demonstrates the vital role of understanding climate dynamics, and it shows how critical weather forecasts are for people with boots on the ground who are trying to stay ahead of disaster.
Rob and Jesse visit Intersolar and Energy Storage North America.
Longtime listeners of Shift Key will recognize the name Intersolar and Energy Storage North America, one of the country’s premier solar industry conferences. Shift Key was live at this year’s event, hosting a panel on the present and future of the solar industry featuring a pair of marquee panelists: Tom Starrs, currently the vice president for government and public affairs at EDP Renewables, North America, who has more than 30 years of experience in the renewables industry; and Maria Robinson, until recently the director of the Department of Energy’s Grid Deployment Office and now the president and CEO of the Interstate Renewable Energy Council. (Robinson is also a repeat Shift Key guest.)
On this week’s episode of Shift Key, Rob and Jesse talk with the panelists about the momentum propelling solar energy forward in the U.S. and whether the uncertainty created by the Trump administration could put a damper on that. Shift Key is hosted by Jesse Jenkins, a professor of energy systems engineering at Princeton University, and Robinson Meyer, Heatmap’s executive editor.
Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, or wherever you get your podcasts.
You can also add the show’s RSS feed to your podcast app to follow us directly.
Here is an excerpt from our conversation:
Maria Robinson: I actually want to go back to the permitting piece because I think this is directly related to the conversation. I suspect everyone here has tried to permit at some point in time on federal lands and found that to be an incredibly overwhelming experience, right? When we talk about this — and my new bugaboo, for the rest of my life, is we cannot call it NEPA anymore. It is not just NEPA. It is also the Fish and Wildlife Section 7 piece, it is also working with your state historical preservation offices. There are so many other pieces than just NEPA that some of these energy permitting reform bills do not, will not actually solve some of the issues that folks are looking at.
Jesse Jenkins: They’re too narrow, yeah.
Robinson: They’re just far too narrow, associated with that. And I think that was one of the things that I was not allowed to say like four weeks ago but I can say now. That did not go far enough in —
Robinson Meyer: Do you think that friendlier lawmakers in Congress understand this distinction? Or is it all the focus is still on NEPA?
Robinson: I think all the focus is still on NEPA, and there has to be a little bit more of that conversation, right? It was fascinating to me: This weekend, the National Governors Association met in D.C., and they all agreed on this resolution about, we need to do energy permitting. And the truth of the matter is, I think, I’m sure for many of you who’ve tried to work with a state historical preservation office, that you’re actually butting up against a lack of capacity at the state level sometimes, as opposed to at the federal level.
So there needs to be that conversation that is not just all, if we suddenly make vast changes to NEPA, that everything in terms of investment is and infrastructure is going to move faster. And I think that that is something that, especially Republican lobbyists and members of Congress and members of the administration can get behind, is that sort of efficiency, right? Efficiency is the word of the moment.
Music for Shift Key is by Adam Kromelow.