Battery storage deployment is surging to fill the gaps left by intermittent renewable energy resources. And, sometimes, those gaps extend days beyond what lithium-ion can handle.For the past six years, Form Energy has positioned itself as the company to solve for the multi-day challenge. What started with splashy renderings and nearly $1 billion in fundraising announcements has evolved into real contracts with utilities like Xcel and Southern Company, and a commercial-scale iron-air battery plant under construction in West Virginia.Episode 54 of the Factor This! podcast features Form Energy CEO Mateo Jaramillo, a former Tesla executive pushing for deep decarbonization on the grid.Jaramillo breaks down the technology behind Form Energy's 100-hour battery, how the company was able to convince risk-averse utilities to buy in, and the challenges still ahead for multi-day energy storage.That's all next on Factor This!We're just a few weeks out from the GridTECH Connect Forum being held in Newport Rhode, Island Oct. 23-25. Register today using promo code PODCAST at checkout to save 20% off admission. Join host developer Nexamp, and host utilities National Grid and Rhode Island Energy, for this groundbreaking event hyper-focused on DER interconnection in the Northeast.  You've heard me talk a lot about the GridTECH Connect Forum - Northeast event being held in Newport, Rhode Island Oct. 23-25. Well, registration is now LIVE. We're excited to partner with the DOE to bring together DER developers, utilities, and regulators around the critical issue of interconnection in the Northeast. Click here to register today.  The Factor This!  podcast is growing! We're adding a weekly climate and clean energy news roundup episode to the feed, co-hosted by John Engel and cleantech PR veteran Mike Casey.  Beginning July 21, "This Week in Cleantech" will give you all of the top stories in 15 minutes or less, and feature a leading journalist or market analyst to share the juice behind the headlines. Email story ideas and topics to ThisWeekinCleantech@tigercomm.us.