Lenovo 91B0: $20 a year to run

This model (Computers) uses 96 kWh of electricity a year, which costs about $20 a year and $201 over 10 years at 21.0¢/kWh.

Energy use
96 kWh
per year
Running cost per year
$20
21.0¢/kWh
Running cost over 10 years
$201
Efficiency rank
1,718 / 1,748

Product details

TypeDesktop
Available sinceJanuary 10, 2025

Compared with the average model (Computers), this one costs about $15 more a year.

More efficient alternatives

Source: ENERGY STAR (U.S. EPA) · 21.0¢/kWh (August 2026) · Methodology