RE+ (formerly SPI, ESI & Smart Energy Week)|Where the industry meets|Press Registration|SPI, ESI, and North America Smart Energy Week Logos and Images SPI, ESI, and North America Smart Energy Week Logos and Images Please utilize these logos and images. If you have any questions or are looking for a a specific image, please contact Greg Brey at gbrey@sets.solar. Click here to download a zip file with all the logos. Looking for photos? Click here to download a zip file with images from SPI, ESI, and NASEW 2019.