But there are a hardy few who already live their lives "off-grid", getting by just fine without mains electricity or mains water. Among them is 83-year-old Margaret Gallagher, who still lives in ...

You can revise mains electricity by clicking the links below. Click the links below to try our GCSE physics exam-style or quick-fire quizzes and test your skills and knowledge.

The widespread power cuts caused by Storm Éowyn were a reminder of how dependent we have become on our electricity supply for ...