Base joined the Unicorn Club in 2025 after raising a $1 billion Series C funding round, which valued it at $4 billion. Headquartered in San Francisco, California, United States, Base equips homes with backup energy storage solutions and home batteries to enhance energy reliability and independence.
The company focuses on designing scalable, safe, and high-capacity home battery systems for residential energy management and backup power during outages.
Keep reading to learn how Base became a $4 billion leader in home energy storage.
What Is Base and What Does It Do?
Founded in 2023, Base develops and deploys home battery systems that provide backup power and energy management solutions. The company designs safe, scalable, and high-capacity energy storage products for residential customers.
Base integrates advanced battery technology with monitoring software to optimize energy use, support renewable energy adoption, and provide reliable backup during power outages.
How Much Funding Has Base Raised?
1. Series C Round
- Amount Raised: $1 billion
- Date: 2025
- Valuation: $4 billion
- Lead Investors: a16z, Valor Equity Partners
- Purpose: Expand manufacturing, scale distribution, and enhance home battery technology
2. Earlier Rounds (Seed to Series B)
- Cumulative Funding: ~$300 million
- Key Investors: a16z, Valor Equity Partners, and other early-stage energy and technology investors
- Purpose: Develop core battery technology, launch initial products, and establish distribution channels
Total Funding Raised: More than $1.3 billion
Latest Funding Date: 2025
Latest Known Valuation: $4 billion
Key Investors
- a16z
- Details: Venture capital firm investing in technology and energy companies
- Focus Areas: Renewable energy, energy storage, home tech, and scalable hardware
- Valor Equity Partners
- Details: Growth stage investment firm focused on transformative technology companies
- Focus Areas: Energy storage, hardware innovation, and sustainable home solutions
Where Is Base’s Headquarters?
Base is headquartered in San Francisco, California, United States, supporting its manufacturing, R&D, distribution, and operational teams for home energy solutions.
What’s Next for Base?
Base plans to expand its home battery production, scale distribution nationally, and enhance battery efficiency and safety. The company is investing in next-generation energy storage technology and smart home integration to provide reliable backup power and support renewable energy adoption.
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