非常事態宣言の影響 https://energy.jp/blog/2020/04/08/%e9%9d%9e%e5%b8%b8%e4%ba%8b%e6%85%8b%e5%ae%a3%e8%a8%80%e3%81%ae%e5%bd%b1%e9%9f%bf/