[r3drock]

It only uses electricity when it refreshes, so it does not seem that high.

[fnord77]

if you're typing something, wouldn't be constantly refreshing?

[rustybolt]

Most e-ink displays only refresh sections. So if you type a letter, it really only draws the letter. If you scroll however, the whole screen needs to be updated.

[agumonkey]

unless the software stack has a degraded mode for power saving