The DOE’s Advanced Research Projects Agency-Energy (ARPA-E) invests in innovative, early-stage ideas from academia, private industry, national labs, start-up companies and small businesses. How are some of the agency’s brightest, emerging energy startups with innovations around emissions monitoring, energy storage and zero-carbon cement being set up for success? How do some of their challenges compare? To help them scale, what financial and non-financial help do these companies need next?