From OpenAire:
Little over five months away from its conclusion, the EC FP7 Post-Grant Open Access Pilot has shared an up-to-date dataset for the APC payments it has made thus far with the OpenAPC initiative run at Universität Bielefeld. The OpenAPC project started in June 2014 as a tool funded by the German Research Foundation (DFG) to collect standardized inputs for APC payments from different stakeholders – mainly institutions at the time – arising from the Gold Open Access funding initiative implemented by the DFG across German Universities. In November 2015 OpenAPC became part of the DFG-funded INTACT project.
[Clip]
OpenAPC soon saw the need for the initiative to become an international endeavour for the sake of promoting transparency around the costs of Open Access publishing and the implementation of standards for data exchange and sharing on APC payments. The funding for the initiative has of course remained national even if it’s now serving stakeholders in various countries, but this seems to be a standard issue around the funding of Open Access-related services that we have only recently started discussing how to fix.
Read the Complete Blog Post
Direct to Data and Summary Material (via OpenAPC on Github)
Direct to OpenAPC Website
Direct to Browse/Visualize Full OpenAPC Dataset
Note: The only North American institution contributing to OpenAPC at this time is Harvard University.