«
»

Energy

Geothermal: Stealth Renewable

12.06.07 | Comment?

Have you ever wondered why geothermal goes so incognito when the renewable electricity market is so visible? There could be a number of reasons, but we believe it has to do with accessibility to the public and ease of identifying resources.

Wind blown tree in a field
Photo Credit The Pennine Way


When a lay-person sees the tree above, they can easily posit that wind contributed to the unique shape of the tree. And, since we know generally how trees grow, it’s easy to deduce that there is strong, consistent wind current present in that area. Thus, when people think about wind as a renewable resource, it’s accessible. There is no magic: wind exists and like a child’s pinwheel, it can cause things to move which is sufficient to make the connection.

Dry desert in the sun.
Photo Credit The Safari Company


When a lay-person sees the photo above, they can reason that it is dry and that it’s likely that the sun shines there on a routine basis and rain/cloud cover aren’t the norm for the region. The connection between a strong sun presence and the potential for energy is very clear to humans, it’s accessible.

Image of Dixie Valley geothermal resource area
Photo Credit: UNR


Now contrast the image above with the tree and desert. What do you observe about the physical characteristics of this land? Does it look like this might be a place one could harness natural resources to generate renewable electricity? This photo happens to be from Nevada’s Dixie Valley, a known geothermal resource area. There is a functioning 60MW geothermal plant in close proximity. The only surface manifestations of the energy potential are hot springs. It’s much less accessible to a lay-person thinking about hot, fractured rocks with super-critical heated water trapped under a cap rock waiting to escape. Can you visualize it? Unless you’ve been around the industry or have a geology background, the chances are that it’s tough to comprehend.

The journal Live Science took a page from VH1’s “Where are they now?” publishing an article on “Whatever happened to Geothermal?” It’s an interesting article and covers many of the issues. Given that geothermal is the only baseload renewable power source (yes gravity hydro is close, but until droughts are solved, it’s not quite baseload) it seems inevitable that geothermal will be “rediscovered” as an energy source.

Comments are closed.




«
»