Financial Support

SustainX has received over $30 million in funding from top-tier venture capital investors, the National Science Foundation, and the Energy Storage Program at the US Department of Energy.


Polaris Venture Partners. Polaris Venture Partners is a venture capital firm that invests in seed, early stage, and middle market companies in high growth industries. As a lead or co-lead investor, Polaris takes an active and long-term role in helping management teams build highly successful businesses. Polaris currently has over $3 billion under management and invests in more than 90 companies.


RockPort Capital Partners. RockPort Capital Partners is a leading venture capital firm partnering with cleantech entrepreneurs around the world to build innovative companies and bring disruptive technologies and products to the twenty-first century. RockPort’s investment approach is distinguished by collaboration with management teams to foster growth and create value. Combining domain expertise with policy and international experience, RockPort has a proven track record of leveraging its insights and networks to foster growth and create value.

cadentenergypartners_logoCadent Energy Partners. Cadent Energy Partners is a private equity firm that invests in small to medium-sized companies in the energy industry. Cadent provides expansion capital to firms that want to accelerate growth and build exceptional shareholder value in partnership with an experienced energy investor. Over the course of their careers, the Cadent principals have invested over $890 million in privately negotiated transactions across a broad range of energy sub-sectors. The team has a proven track record of success in creating value for both its investors and the management teams of its portfolio companies.
generalcatalyst_logoGeneral Catalyst Partners. General Catalyst Partners is a private equity firm focused on venture capital investments in early stage technology-based companies including software, infrastructure software, and applied technology businesses. The firm has also includes a growth capital team that focuses on later stage investments. The firm, which is based in Cambridge, Massachusetts, was founded in 2000. It has raised approximately $1.6 billion since inception across five funds, including a $600 million venture capital fund raised in 2007.

GE Energy Financial Services. Experts at GE Energy Financial Services invest globally across the capital spectrum in essential, long-lived and capital-intensive energy assets that meet the world's energy needs. In addition to capital, GE Energy Financial Services offers GE's technical know-how, technology innovation, financial strength and rigorous risk management. Based in Stamford, Connecticut, the GE business unit helps its customers and GE grow through new investments, strong partnerships and optimization of its $21 billion in assets. It holds equity investments in power projects that can produce 23 gigawatts, equivalent to the installed generating capacity of the Netherlands. SustainX is supported by GE Energy Financial Services as a result of being competitively selected to be a partner of the GE Ecomagination “Powering the Grid” project in late 2010.


Angeli parvi ("little angels") is a group of industry leaders who mentor aspiring Dartmouth entrepreneurs by guiding development of business plans and strategies. The group also provides a link to the venture capital community so that new entrepreneurs can secure funding to support prototype development, market testing and analysis, and travel for presentations.


Energy Storage Systems (ESS) Program of the Office of Electricity Delivery and Energy Reliability at DOE. The goal of the ESS Program to develop advanced energy storage technologies and systems, in collaboration with industry, academia, and government institutions that will increase the reliability, performance, and competitiveness of electricity generation and transmission in the electric grid and in standalone systems. ESS has been instrumental in the research and development of energy-storage technologies and applications since the 1970s, especially as storage relates to electric utilities, renewables, and grid security. The DOE Energy Storage Systems Program works with Sandia National Laboratories, Pacific Northwest National Laboratory, Oak Ridge National Laboratory, and the National Energy Technology Laboratory. The Program manages the $185 million ARRA Storage Demonstration program. SustainX received a $10.8M award from this program to design, build, and deploy a grid demonstration of its ICAES system. The ICAES demonstration will be sited with project partner AES Energy Storage.


Green Launching Pad. The Green Launching Pad is a public and private sector initiative that enables local start-ups to bring green solutions to market. We discover New Hampshire’s best and brightest, and then support them with the financial resources, business infrastructure, and academic expertise to succeed.


National Science Foundation—Small Business Innovation Research Grants. The National Science Foundation (NSF), an independent agency of the Federal Government, invites (by solicitation) eligible small business concerns to participate in the Small Business Innovation Research (SBIR) Program. NSF supports high-quality projects on important scientific, engineering, or science/engineering education problems and opportunities that could lead to significant commercial and public benefit, if the research is successful. SustainX has received both Phase 1 and Phase 2 awards from the NSF.