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§ Private Profile · Denver, CO, USA
Peak Energy is a technology company.
Peak Energy designs and manufactures next-generation sodium-ion energy storage systems, aiming to redefine grid infrastructure. The company’s vertically integrated approach covers every stage of the energy storage industry, from cell production to project delivery, with a focus on creating safer, lower-cost, and more reliable solutions. These American-made systems feature passively cooled sodium-ion technology, designed to meet the growing demand for grid stability and energy independence.
Co-founders Landon Mossburg, CEO, and Liam O'Connor, COO, established Peak Energy in October 2023. Mossburg's background includes leadership roles at Northvolt, Einride, and Tesla, while O'Connor previously held operational leadership positions at Zipline, Lyft, and Tesla. Their combined experience in advanced battery manufacturing, autonomous systems, and supply chain management informed the foundational insight that the grid requires a resilient, domestically sourced, and scalable energy storage solution.
Peak Energy serves utilities, developers, and grid operators by providing robust storage capabilities. The company's vision is to build the essential backbone for a stable and energy-independent future, enabling critical advancements in areas such as AI infrastructure, advanced manufacturing, and electrified industries. They are committed to engineering, scaling, and deploying the most effective energy storage systems to support a modern and resilient electric grid.
Peak Energy has raised $75.0M across 3 funding rounds.
Peak Energy has raised $75.0M in total across 3 funding rounds.
Peak Energy is a Denver-based startup founded in 2023 that designs and deploys next-generation sodium-ion battery energy storage systems (ESS) for grid-scale applications. These systems are safer, lower-cost, and more reliable than lithium-ion alternatives, using abundant domestically sourced materials to support renewable energy integration for utilities and independent power producers.[1][2][3] The company solves critical challenges in energy storage by reducing reliance on scarce minerals like lithium and cobalt, enabling scalable, cost-effective solutions amid rising grid demand—highlighted by their $65M Series A funding in 2024 and deployment of the world's first passively cooled, grid-scale sodium-ion system in Colorado in August 2025.[2][3]
Peak Energy's growth momentum is rapid: they completed their first pilot in California in September 2024, shipped the U.S.'s inaugural grid-scale sodium-ion ESS, and were named America's most promising energy startup, positioning them to expand domestic manufacturing and job creation.[1][3]
Peak Energy emerged in 2023 amid the urgent push for resilient, U.S.-sourced energy storage to counter lithium supply chain vulnerabilities and accelerate renewables.[2][3] Led by CEO Landon Mossburg, the team—drawing from battery and energy expertise—prioritized fast execution, closing a $55M Series A in June 2024 backed by Eclipse Ventures, TDK Ventures, TechEnergy Ventures, and others to fund industrialization.[2][3][5] Pivotal early traction included commissioning their A1 pilot system in California by September 2024, followed by the landmark August 2025 deployment of the largest sodium-ion phosphate pyrophosphate (NFPP) system globally, marking the first U.S. grid-scale sodium-ion integration.[1][3] This hands-on progress reflects their "sense of urgency" for tangible results over hype.[3]
Peak Energy stands out in the sodium-ion battery space through these key advantages:
Peak Energy rides the explosive growth in renewable energy storage, where intermittency demands affordable, scalable batteries to stabilize grids amid surging U.S. demand from electrification and data centers. Timing is ideal: post-IRA incentives boost domestic production, while global lithium shortages (exacerbated by China dominance) create openings for sodium-ion as a safer, mineral-secure alternative.[1][2][3] Market tailwinds include utilities' need for cost-competitive ESS to defer expensive infrastructure, plus sodium-ion's fit for long-duration storage in renewables-heavy regions like California and Colorado.[1][3] By pioneering U.S. grid deployments, Peak influences the ecosystem—spurring sodium supply chains, thousands of manufacturing jobs, and energy independence, while challenging lithium incumbents.[3]
Peak Energy is primed for explosive scaling, with post-Series A momentum likely fueling multi-GWh factory builds and utility contracts by 2027, capitalizing on their first-mover U.S. grid deployments. Trends like AI-driven grid strain and federal reshoring policies will amplify sodium-ion adoption, potentially evolving Peak into a cornerstone of North American energy security. As the bridge from lithium dependency to abundant alternatives, their trajectory could redefine grid resilience—echoing their mission to deliver safer, cheaper storage at the scale renewables demand.[1][3]
Peak Energy has raised $75.0M across 3 funding rounds. Most recently, it raised $55.0M Series A in July 2024.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| Jul 1, 2024 | $55M Series A | Xora Innovation | Abstract Ventures, BlueRun Ventures, Eclipse Ventures, Energy Impact Partners, General Catalyst, LGF, Lowercarbon Capital, Menlo Ventures, Presight Capital, TDK Ventures, Thirty Five Ventures | Announced |
| Oct 4, 2023 | $10M Venture Round | Eclipse | — | Announced |
| Oct 1, 2023 | $10M Seed | Eclipse Ventures | Abstract Ventures, BlueRun Ventures, Energy Impact Partners, LGF, Lowercarbon Capital, Menlo Ventures, TDK Ventures, Thirty Five Ventures | Announced |
Peak Energy has raised $75.0M in total across 3 funding rounds.
Peak Energy's investors include Xora Innovation, Abstract Ventures, BlueRun Ventures, Eclipse Ventures, Energy Impact Partners, General Catalyst, LGF, Lowercarbon Capital, Menlo Ventures, Presight Capital, TDK Ventures, Thirty Five Ventures.