until then是“在那之前”的意思么？

Beside the Cleddau

River and surrounded by forest, this basic

lodge offers hot showers and quiet for weary

trampers. It was still ‘about’ to be plugged

into the region’s mains supply at the time

of research; until then the generator kicks

in for power between 6.30am and 11.30pm.

这是一段关于一个旅馆的文字。。关于它是否供电。。until then 是啥意思？是“在那之前”还是“到那时”？？

在此之前。

LS请别用电脑似的翻译误导他人。