Open access journals

I've been looking for open access journals to publish in. One of the main ones we use is Optics Express. Its a little pricy, but free to read.

In Eileen's Blog she mentions a talk on this topic. I hope that more universities take this seriously. Its very disturbing that so much research is done on public funds, but the public has no access to their results.

One of the better know groups is the Public Library of Science (PLoS), but their journals are mainly medicine and biology related.

What I've found so far;

Open Renewable Energy Journal

The International Journal of Photoenergy; seems to be mainly chemistry type stuff

Geotermia, a Mexican journal on geothermal studies.

To find open access journals check out the Directory of Open Access Journals

Seems like OREJ is the best bet for what I'm looking at publishing. If you know of any other journals, please leave a comment.