Does Remote Work Reduce Your Carbon Footprint?
In short
Usually yes, if it replaces a car commute. A worked example weighs commute savings against extra home energy, plus what research found about hybrid work.
Usually yes, if working from home replaces a car commute. The drive you skip saves more carbon than the extra heating, cooling and electricity you use at home on most days. The effect is smaller than people assume for one or two remote days a week, and it can shrink to almost nothing if you drive more for errands, live in a large home in a harsh climate, or your office stays fully heated and lit whether you are there or not.
What the Research Found
A 2023 study by researchers at Cornell University and Microsoft, published in the Proceedings of the National Academy of Sciences, modeled U.S. workers' emissions across commuting, office energy, home energy, technology use and non-work travel. It found:
- Fully remote: up to 58% lower work-related carbon footprint than working on site.
- Hybrid, 2 to 4 days at home: 11% to 29% lower.
- One day at home a week: about 2% lower, because extra non-work travel and home energy use cancel most of the saving.
- Computers and video calls: negligible effect either way.
The study also found that office energy use is the largest part of an on-site or hybrid worker's footprint. If a company keeps a full office running for a half-empty building, hybrid work saves less. If it shares desks or shrinks its space, hybrid work saves more.
What Goes Down and What Goes Up
| Goes down | Goes up |
|---|---|
| Commute fuel or charging | Home heating and cooling during work hours |
| Your share of office energy, if the office shrinks | Home lighting, computer and appliance use |
| Wear and parking costs | Errand and leisure trips you would have chained onto the commute |
Worked Example: 3 Remote Days a Week
A 15-mile commute each way (30 miles a round trip) in a 25 mpg gas car. You switch to 3 days at home a week for 48 working weeks: 3 × 48 = 144 days. We use the same factors as our Carbon Footprint calculator: 19.6 lb of CO2 per gallon of gasoline (EPA's 8,887 grams) and 0.85 lb of CO2 per kWh of electricity.
Commute saved: 30 × 144 = 4,320 miles. 4,320 ÷ 25 = 172.8 gallons. 172.8 × 19.6 = 3,386.9 lb CO2.
Home energy added: suppose 6 kWh more per remote day for heating, cooling and equipment. 6 × 144 = 864 kWh. 864 × 0.85 = 734.4 lb CO2.
Net: 3,386.9 − 734.4 = 2,652.5 lb, about 1.2 metric tons a year.
Money: at the U.S. average of $4.478 a gallon for regular gasoline (EIA, week of Sep 21, 2026), 172.8 gallons is $773.80. At the July 2026 U.S. average residential electricity price of 18.31 cents per kWh (EIA), 864 kWh is $158.20. Net saving: $615.60 a year.
The 6 kWh a day is an assumption. If you heat with natural gas, some of the added home energy is gas, not electricity, and the calculator doesn't count it. If your grid is cleaner or dirtier than 0.85 lb per kWh, the home side changes. The commute side is the larger number in almost every car-commute case.
When Remote Work Saves Little
- You walk, bike or take a short transit ride now. There is little commute carbon to remove.
- You drive more on remote days. Separate trips for lunch, errands or the gym can replace a lot of the commute miles.
- Your home is large and poorly insulated in a very hot or very cold climate, so all-day heating or cooling adds a lot.
- You go remote only one day a week. The study found about a 2% reduction at that level.
How to Estimate Your Own Numbers
- Commute side. Round-trip miles × remote days a year ÷ your car's mpg gives gallons saved. Multiply by 19.6 for pounds of CO2 and by your local pump price for dollars.
- Home side. Compare electricity use on a month when you worked on site with a similar month working from home. Your utility's online account often shows daily use, which makes this easier.
- Your grid. Some utilities publish the emissions rate of the power they sell. If yours is much cleaner than average, the home side of the math gets smaller.
Getting More From Remote Days
Heat or cool the room you work in rather than the whole house, and set the thermostat back in the rest of it. Group errands into one trip instead of several short drives. If your employer is cutting office space as people go hybrid, that is where much of the saving comes from, so ask whether the office is being consolidated or just left half empty.
What This Doesn't Cover
This guide doesn't cover moving farther away because you can work remotely, business air travel, or company-level office emissions reporting. The example uses national averages; your fuel economy, local grid mix and home heating fuel will change the result. For a home energy check, a utility energy audit is the best starting point.
Run Your Own Numbers
Sources
Found this useful?
Copy the link to share it.