Although the scientists of Searbay have captured and harnessed electricity they uses to which they have put it are varied and do not parallel those of humans. For instance, they have not invented wireless or television, or any form of the distance communication. they've had no need, no drive to do so. With the vast population living within the boundaries of Carlyle there has simply been no need.
They also have never invented the internal combustion engine. The majority of cargo and mouse transportation is still by mouse drawn cart. Although some of the more modern carts do have electrical motors these are generally only used as needed by older mice who struggle to draw their carts.
Electrical powered foundries exist and powered tools and pumps. All of these uses however are relatively new skills and professions. There is no overriding commercial wish to replace traditional mouse work and roles with machines. Such things have been proposed but is always answered with:
"But what would the mouse do when he has no role?"
Although goods are bartered, the mouse mentality is not of the capitalist brand. Always they think of what they need, or the community needs, rather then what they want on a whim.
All in all, the invention of means to harness electricity has been a boon to the lives of all mice but its implementation has been small compared to that of humans.