Mercury CEO Stew Hamilton on the $53m Datagrid investment and why AL is reshaping electricity demand.

<p>Mercury CEO Stew Hamilton on the $53m Datagrid investment and why AL is reshaping electricity demand.</p>

With more than more than 25 years' experience reporting on consumer affairs, business and politics, Garth Bray brings you today's business news, direct from the Herald NOW studio. 

<p>With more than more than 25 years' experience reporting on consumer affairs, business and politics, Garth Bray brings you today's business news, direct from the Herald NOW studio.&nbsp;</p>