Inexpensive, recyclable lithium-ion alternative poised to transform transportation and home power storage SANTA CLARA, Calif., April 27, 2021-- Gridtential Energy, the creator of advanced AGM battery technology Silicon Joule™, today announced $12M in financing led by 1955 Capital with participation from Silicon Valley Bank, August Capital cofounder David Marquardt, ReneSola CEO Yumin Liu and existing investors East Penn Manufacturing, Crown Battery and the Roda Group joining as well.