What are you wanting electric? Temp? Humidity? Both?
My next question is why the need for electric?
There are many wine fridges that people have used for storage but my understanding is they mostly just control temp. I have used a non working wine fridge in the past for additional storage with no issues. They also make electric humidification that work ok. Can be used in regular humidor or wine fridge. Aristocrat offers Coversion kits to handle humiliation and or humidity for some humidors. Unless your wanting something super fancy a humidor is just a box that hold humidity. I would check marketplace fir a used broken wine fridge and get a good electric humidification system unless where you put it gets too warm for the cigars.