A <a href="https://en.wikipedia.org/wiki/2012_India_blackouts" id="mwAT8" rel="mw:WikiLink" title="2012 India blackouts">power grid failure</a> in <a href="https://en.wikipedia.org/wiki/Delhi" id="mwAUA" rel="mw:WikiLink" title="Delhi">Delhi</a> leaves more than 300<span id="mwAUE" typeof="mw:Entity"> </span>million people without power in northern India.