The Bill and Melinda Gates Foundation has a statement on open access of research outputs. They also provide a FAQ section and a document on the their guiding principles for data access.

Time Limits

All publications will be available immediately upon their publication, without any embargo period.  An embargo period is the period during which the publisher requires a subscription or the payment of a fee to gain access to the publication. However, the Foundation has allowed for a transition period until 1 January 2017, during which it will allow publications in journals that have embargo periods of up to 12 months.

Data Plan

Applicants are expected to submit a data management plan at the discretion of the program officer.

Access/Data Sharing

The Foundation requires that data underlying the published research results be immediately accessible and open, subject to the same transition period until 1 January 2017, as above.

Long-term Curation

No information at time of publication.

Monitoring

No information at time of publication.

Support Services

Guidance

Extensive guidance is available on the website.

Repository

The Foundation does not have its own repository, but it does provide financial support to enable the deposit and long-term curation (where necessary) of research data.

Data Centre

Data must be deposited with a trusted repository. Immediate open access is required, with exceptions as above.

Costs

Fees and other associated costs to facilitate openly accessible outputs and supporting data must be included in the application. Payment will made directly to the publisher and/or repository; the Foundation will not reimburse the researcher.