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Sonnen, and Pura Energia, are providing,
. . . 15 solar plus storage microgrids across Puerto Rico.

These microgrids are used to power:
. . . . . . washing machines,
. . . . . . refrigerators, and some
. . . . . . basic electrical outlets.
Each microgrid is supporting hundreds of homes,
. . . whose water was contaminated by
. . . deadly Leptospirosis bacteria.
Genter described a Sonnen virtual power plant community in Germany,
. . . as an example of how the systems can improve grid stability, through:
. . . . . . load shifting,
. . . . . . frequency regulation, and
. . . . . . voltage regulation.

Puerto Rico's systems average,
. . . 10 kWh of storage, and
. . . 5 kW of PV production.

2-27-2018 Source:  Puerto Rico: #Solar + Storage Microgrids