Uh-oh, looks like you aren't using a Mozilla-based browser like Firefox, Camino, or Iceweasel. The MIT Energy Map uses a standards-based technology called Scalable Vector Graphics to render the map, and other browsers* don't support it. Luckily, Firefox, Camino, and Iceweasel are free, so nothing should be stopping you from the SVG goodness within! In the meantime, you can check an out some of the earlier, and significantly less exciting, version of the energy map.
* If you think your browser can handle SVG and its user-agent doesn't match /(Firefox\/2|Camino|Iceweasel\/2)/, you are welcome to spoof your user-agent to get in and check out the site, and then email us (tarekr at mit) with your user-agent so we can add it to the list of approved browsers. If you have no idea what this means, just get Firefox.