Mmm, in this case, as long as the labels are just labels, I think on the whole for the lifetime of product for net changes. From the eink site under the bistab

Mmm, in this case, as long as the labels are just labels, I think on the whole for the lifetime of product for net changes. From the eink site under the bistable display, the device draws once then really isn't drawing power. [1] They claim that theoretically as long as nothing needs to change, it will stay that way. So, I guess it really depends on how often museums have to change labels or wish to update the labels. Even if it's a one and done, I do think that the net energy savings of a horde of labels as opposed to new label printings every time would result in net savings both financially and ecologically. Often the labels are not just simple paper and require more resources to make, etc. I don't think this is necessarily saving any rainforests, per say, but I also don't think it's draining electricity. [1] http://www.eink.com/technology.html http://www.eink.com/technology.html