Analysis of information sources in references of the Wikipedia article "Internet-related prefixes" in English language version.
電気がめずらしい明治の頃、目新しいものというと"電気○○○"などと呼ばれ、舶来のハイカラ品と人々の関心を集めていました [In the Meiji era, when electricity was uncommon, the word for electricity (denki) was used as a prefix for new products to give them a stylish, imported feel.]