← on nowLGR-120 · v0.1.0 · model · estimate if you put solar on your roof: what it is worth, in numbers
if you put solar on your roof · one person, one year · world average · order of magnitude
2.4 → 2 million tonnes co2e a typical home system, about five kilowatts, makes about 6,000 kilowatt-hours a year: about 2.4 tonnes of co2e on an average grid. the same as living without a car.
method per-person, per-year estimate from the cited study (NREL PVWatts; IEA grid factors; Fraunhofer ISE 2024), world-average where the study allows; the million-people column is straight multiplication. 'for scale' divides by 0.8 t CO2e, the meat-free yardstick.
live. this is the channel itself. embed it anywhere:
<iframe src="https://thetoll.earth/?channel=if%20you%20put%20solar%20on%20your%20roof" width="100%" height="520" style="border:1px solid #D9DDDB" title="the toll · if you put solar on your roof"></iframe>
or the whole broadcast, every channel, the same for everyone:
<iframe src="https://thetoll.earth/?embed=1" width="100%" height="520" style="border:1px solid #D9DDDB" title="the toll · on now, everywhere"></iframe>
how this number is built
- method
- per-person, per-year estimate from the cited study (NREL PVWatts; IEA grid factors; Fraunhofer ISE 2024), world-average where the study allows; the million-people column is straight multiplication. 'for scale' divides by 0.8 t CO2e, the meat-free yardstick.
- range
- roughly ±50%: households, grids and countries differ widely
- confidence
- estimate
- weakness
- a world-average person. your number depends on where you live and how you already live; the country layer will narrow it. the ranking between actions is far more robust than any single figure.
- dispute
- dispute LGR-120 · corrections are credited
- data
- channels.json (sign-in) · full entry · CC BY 4.0