Can I reduce my energy usage to the global average?

I’m trying to reduce my energy usage to the level of the average global citizen’s. [**EDIT**: I am now tracking how well I’m doing that here.]

I was inspired to do so by renewable energy inventor Saul Griffith. In 2009, he gave a talk about climate change (

“[Saul Griffith]’s been analyzing his own life in extreme detail to figure out exactly how much energy he uses and what changes might reduce the load. In 2007, when he started, he was consuming about 18,000 watts, like most Americans. The energy budget of the average person in the world is about 2,200 watts… [T]o stay at the world’s energy budget at 16 terawatts, while many of the poorest in the world might raise their standard of living to 2,200 watts, everyone now above that level would have to drop down to it.”

Well, how much can I reduce my energy usage?

I estimate that I could easily be at **3,000 watts, plus my portion of heating for the dorm I live in and the places I work.** (I will update this with numbers when I hear back from my dorm building manager.)

Concretely, 3,000+ watts is:

1. *Flights*: Jet fuel for 1 roundtrip from SF to Boston each year (385 watts)
2. *Land transport*: Gas for 1 8 mi roundtrip on a bus from Boston to Cambridge each week (225 watts)
3. *Stuff*: Energy for production and transportation\* of my laptop and phone, toiletries, clothes, miscellaneous items and the trash these produce (270 watts)
4. *Food*: Energy for production and transportation\* of 1 serving of milk per day, 1 serving of fish per month and 10 servings of vegetables per day (425 watts)
5. *Heat and electric*: Electricity and gas for heating of my dorm and workplace, refrigerator, cooking, laptop and phone (34 watts plus my portion of heating)
6. *Services*: Energy for production, transportation and retail of the healthcare, education and finance services I use (1080 watts)
7. *Society*: My portion of the energy spent by the US government, notably the construction of roads and the purchases and operations of the US military (464 watts)
8. *Buffer*: Things I forgot to count, plus miscellaneous things here and there that aren’t recurring or significant uses of energy (e.g. a random drink of wine over the holidays) (151 watts)

What would I have to change in my life to get to 3,000+ watts? **I’d start by cutting flights, cars/buses and bought stuff, the highest bang-per-buck areas** for me and Saul (and, I suspect, many of my friends). I actually don’t have that much to cut to get to the lifestyle described above, minus a few things:

1. For 2019, I’m planning on traveling once to Peru for vacation and once to home over the holidays. Re Peru: In general, I’d need to do such vacation travel very infrequently, or replace the holiday trip home with one to a vacation destination.
2. I’d have to cut three trips per week to Cambridge (which I did in Fall 2018) down to one. I could accomplish this by coordinating all my meetings and activities to happen on one day per week, participating in others remotely instead of in person, prioritizing which activities in Cambridge are truly important to me and potentially staying over in Cambridge.
3. I’d have to reduce buying from Amazon (I count 19 orders over 17 weeks in September to December 2018) with the wish list method\*\* or by buying used things, which seems like a great and fair-accounting way to reduce energy usage.
4. Less important things: I could take cold showers exclusively, which I occasionally do for the thrill and am curious to turn into a habit.
5. Relatively easy things: I’d have to continue my habits of not buying recurring new things except food and toiletries (e.g. no recurring clothes!), not buying non-essential things (e.g. no physical books), not buying new big things (e.g. furniture), not using the heat in my room (wear warm clothes or insulate the room instead), etc.

I’ve posted the details of my accounting here, including the numbers I used for energy usage of each lifestyle item or action:

How accurate are the numbers I’m using for energy usage per lifestyle action or item? I haven’t checked them myself, but I somewhat don’t care about the exact numbers, because the direction is correct (i.e. using/doing less means reducing your energy usage), and the general action item remains the same: **travel less and buy fewer things and services.** I *do* care about not forgetting my sources of energy usage (e.g. I forgot about electricity for lighting the first time around), and I especially care about not forgetting the biggest contributors. I also care that the numbers’ orders of magnitude are correct. I am inclined to trust Saul’s numbers because he seems to be very rigorous and detailed. You can judge for yourself by watching Saul’s talk (, especially 47:46-51:00) or his other talk (, especially 31:00-35:00), which he apparently prepared by combing through 60,000 pages of footnotes of energy data.

If you’re interested in making these calculations for your life, I’d recommend watching 47:46-51:00 in Saul’s talk to get an overview of the process: \*\*\*. Then you could use a spreadsheet similar to mine. My spreadsheet has some common line items (e.g. watts for air or car travel) but excludes others that aren’t part of my life (e.g. my room came furnished, so I haven’t bought furniture). Your lifestyle likely has different stuff and actions than mine; to find the numbers of watts for these things or actions, I’d recommend referring to Saul’s slides, which are in high definition here: Specifically, pages 75, 79 and 81 are useful for watts on overall goods and services, food and physical goods, respectively. I tried searching for an online energy usage calculator but couldn’t find one\*\*\*\*. If there’s a number you’re looking for that isn’t in Saul’s slides, you might find it in this MIT climate course lecture, although I haven’t looked at the lecture myself and didn’t use it for my calculations:

Am I uncomfortable making these cuts in my life? For me, I’ve always been a pretty cheap homebody. I spend a lot of time using the computer (for work, reading or chatting with friends) or taking walks with nearby friends. I hate owning too many things because I dislike spending mental effort tracking them. So the ideas of living minimally have been easy for me to adopt, and the environmental argument for living this way is a cherry on top. For me, the most difficult sacrifice of these cuts is not flying home more often to see my family and close friends, but I see this as solvable by making my trips home longer and getting better at having a deep relationship remotely, with gifts, cards and quality time online. According to Long Now, after Saul’s cuts, “[h]e’s healthier, eats better, has more time with his family, and the stuff he has he cherishes.” I think that many people would similarly find that living in a lower-footprint way would change their lives in other ways that matter to them, sometimes positive and sometimes negative. If those changes are positive, then these “cuts” will look more like improvements and tend to stick.

I don’t want to say that there’s no environmental motivation for what I’m doing. While I’m not under the illusion that the cuts in my life will, by themselves, put a dent into climate change, I hold out some hope that I will figure out a way to have a larger impact on climate change. Living this way is potentially educational in that endeavor and could make me more credible to have that kind of impact. Moreover, it could be that developed-world citizens *must* make this magnitude of cuts (and/or make up their carbon footprint in some other way\*\*\*\*\*) for it to even be feasible for renewable energy to scale to cover the world’s energy usage. Something just resonates emotionally with me when I hear Saul make this argument, even though he says it in such a nonchalant way (to see him say it with graphics, start at 46:46 in

“So you now realize that the 18,000 watts or 17,000 watts in Saul Griffith’s life looks a little like extravagant, because if everyone in the world went from 2,500 watts to 18,000 watts suddenly, we are not going to need to have just Renewistan [Saul’s imaginary planet that produces the world’s 2009 energy consumption, 16 TW, from renewable sources]; we are going to need 6 or 7 Renewistans. That’s not going to scale. So it’s inevitable that China and India bring their power consumption per capita up, and probably we shouldn’t begrudge anyone in the less developed nations to do so. And that sort of means that we [developed-world citizens] have to go down.”

If everyone has to make these cuts, then in particular, I have to make these cuts.


\* This figure possibly includes energy for retail as well, i.e. the energy to keep open the store in which I buy food and stuff. I’m not sure.
\*\* The wish list method: whenever I have the desire to buy something, I put it on a wish list and only buy it if, 30 days later, I still feel I need it.
\*\*\* If you have time, I found the whole talk to be very informative, entertaining and inspiring!
\*\*\*\* Saul created such a calculator called WattzOn at some point before 2009, but I wasn’t able to find the calculator today (in 2019). It used to exist, because I found it on Wayback Machine:; however, the calculator doesn’t seem to be functional on Wayback Machine.
\*\*\*\*\* For example, by planting trees.