Hey all, great discussion. I'm founder of Recargo and I would like to give you our position on data sharing and my personal perspective on the various efforts to map charging stations.
Recargo is committed to sharing basic charger location data such as address and charging capabilities. We haven't selected the license for data sharing nor have we released our API to developers yet; I expect that to happen no later than first quarter of 2011. I'm happy to get feedback from everyone here on what path we should take to better serve the community. I don't think we need to agree on data formats right now, what's more important is the pledge to share. In fact...
I'm calling for government agencies, charging network providers, parking services, manufacturers and other stakeholders to share basic charger location data as part of a successful EV infrastructure rollout. Sometimes just knowing that a charger is there is enough to sway car buying decisions, and the more outlets for information the better we can address range anxiety and other concerns.
I applaud your efforts to create an open source database of chargers. You may want to think about joining a larger project, such as OpenStreetMap.org, to take advantage of their resources and "installed" base of users.
BTW Google Maps can be used to find EV chargers already and my guess is they are going to improve for this purpose over time.