It means the country is using natural resources three times faster than the Earth can regenerate them, so it would need to cut its resource use by about two‑thirds to be environmentally sustainable.

Breaking it down

  • A “3.0 planet rate” means that if everyone on Earth lived like this country, we would need the equivalent of three Earths’ worth of resources and ecological capacity to support that lifestyle.
  • In other words, the country is overshooting its fair share of the planet’s biocapacity by a factor of three, putting pressure on ecosystems, climate, and resource stocks.
  • To get back to a sustainable level (a “1.0 planet rate”), it would have to reduce its overall consumption of energy, materials, land, and other resources to about one‑third of what it currently uses, i.e., a two‑thirds reduction.

Viewed simply: 3.0 planets used vs. 1.0 planet available = consuming triple what’s sustainable, so the country must shrink its footprint to roughly one‑third of today’s level.