Google will charge that card if users exceed a certain number of API requests, which is different for different services. Google will provide users a free $200 credit toward those costs each month.

The new API improves on a previous move by Google in December 2013, when the search giant began allowing Website owners and bloggers to embed and use Google Maps images for free.

Google launched its latest sustainability tool, a series of environmental geospatial APIs that help cities, businesses, and other partners map solar, air quality, and pollen data worldwide.