There are some two types of industries that are likely to be attracted to countries with low electricity costs.
The first type of industry that is likely to be attracted to countries with low electricity costs is that of manufacturing industry. Players in this industry incur heavy electrical power costs, meaning that this is an important input for them, and they have to pay close attention to the cost of electricity, before setting up their plants.
The second type of industry that is likely to be attracted to countries with low electricity costs is that of the service industry. This is an industry that doesn’t produce any tangible products, but provides services that people need, remotely or locally. Profit margins in this industry can be low, and countries with extremely high electricity costs are unattractive to players in this industry. To be sure, the players in this industry are not as sensitive to these matters as those in the manufacturing industry, but they do still care. Before, say, Yahoo, the company that provides the Yahoo Mail service(about which you can find more information if you click here) can decide to have its servers in a particular country, it has to be sure that the cost of electricity in that country is, at the very least, manageable.