From the Solar Power International website:

It’s not just a solar show anymore. SPI, ESI & North America Smart Energy Week is the largest event in North America for the renewable energy industry, including solar, storage, smart energy, wind, hydrogen & fuel cells, geothermal, and EV infrastructure. Anchored by the flagship event, SPI, North America Smart Energy week brings together an extensive alliance of renewable energy leaders for multiple days of networking, education, and innovation that moves the industry forward. SPI, ESI & North America Smart Energy Week, has become the center of integration for the wider energy industry - with Energy Storage International (the largest energy storage event in North America), Smart Energy Marketplace + Microgrid, Hydrogen + Fuel Cells International, EV International, and Wind Energy International.