Here are a few descriptions for the WordPress post tag “電費折扣” (Dian Fei Zhe Kou – Electricity Bill Discount) in Traditional Chinese, ranging in length and focus:

**Option 1 (Short & Simple):**

> 想節省電費嗎？這裡分享各種電費折扣優惠資訊。
>
> *Translation: Want to save on your electricity bill? Here we share information on various electricity bill discount offers.*

**Option 2 (Slightly More Detailed):**

> 尋找最新的電費折扣資訊，幫助你減少電費支出。包括政府補助、不同用電時段的優惠、及其他省錢妙招。
>
> *Translation: Find the latest electricity bill discount information to help you reduce your electricity expenses. This includes government subsidies, discounts for different usage times, and other money-saving tips.*

**Option 3 (Emphasizing Specificity):**

> 了解如何在你的電費單上獲得折扣。這裡彙整了台灣地區的電價優惠、節能補助、特別方案，以及其他能有效降低電費的方法。
>
> *Translation: Learn how to get discounts on your electricity bill. This compiles Taiwan’s electricity price offers, energy-saving subsidies, special programs, and other methods to effectively reduce your electricity bill.*

**Option 4 (Including Target Audience):**

> 專為台灣居民設計，彙整最新的電費折扣資訊。無論你是家庭用戶、商家，還是其他用電戶，都能在這裡找到實用的省錢方案。
>
> *Translation: Designed specifically for Taiwanese residents, this compiles the latest information on electricity bill discounts. Whether you’re a household user, a business, or another electricity user, you can find practical money-saving plans here.*

**Key considerations when choosing:**

* **Conciseness:** WordPress tags benefit from brevity.
* **Relevance:** The description should accurately reflect the content tagged.
* **Keywords:** Use relevant keywords like “電費折扣,” “省電,” and “優惠.”
* **Target Audience:** Consider who will be reading the tagged content.
* **SEO:** While short, include keywords to help with search engine optimization.

I recommend choosing the option that best fits the content of the posts using this tag and your overall writing style. Option 3 is generally a strong, informative, and well-targeted choice.