Base Power has $1.2B on record. The latest round is a $1.0B Series C (October 2025). Size your own round against the evidence it must buy, not against the stage letter.
Key takeaways
- Round size should be derived from the evidence the next investor needs, not from the stage label.
- Named participants on a record tell you which funds write at this size and stage.
- Plan the raise timeline backwards from your cash-out date, with a third added for slippage.
Round size is not ambition. It is the cost of reaching the evidence that unlocks the next raise, plus margin for the raise itself taking longer than planned.
The record here belongs to Zach Dell, founder of Base Power (Austin, United States).
| | | |---|---| | Founder | Zach Dell | | Company | Base Power (Austin, United States) | | Total raised | $1.2B | | Latest round | Series C — $1.0B | | Round date | October 2025 | | Named participants on record | Addition, Thrive Capital, Lightspeed Venture Partners, Andreessen Horowitz (a16z), CapitalG, Valor Equity Partners |
This round is 83% of everything raised to date, so earlier rounds still shape the cap table.
The round size sets the next evidence bar. Investors size the following round against what this one was expected to buy. Write that expectation down before you sign.
Named participants signal the buyer pool. Addition, Thrive Capital, Lightspeed Venture Partners, Andreessen Horowitz (a16z), CapitalG, Valor Equity Partners are on record here. Funds with that profile are the realistic audience for a comparable raise.
Timing is data. The round closed in October 2025. Fundraises take longer than founders plan; count backwards from the date you need cash, not from the date you want a term sheet.
1. Write the two or three pieces of evidence your next round must show. 2. Cost out the months and headcount required to produce that evidence, then add a third for slippage. 3. Build the investor list from funds that have written cheques of this size at this stage, not from brand preference. 4. Ask each lead what they expect to see at the next round, and hold them to it in writing.
The letter on the round matters far less than whether the money buys the evidence the next buyer needs.
Frequently asked questions
- How much has Zach Dell raised for Base Power?
- Base Power has $1.2B in disclosed funding on record, most recently a $1.0B Series C in October 2025.
- Who invested in Base Power?
- Named participants on record include Addition, Thrive Capital, Lightspeed Venture Partners, Andreessen Horowitz (a16z), CapitalG, Valor Equity Partners. Records list participants, not allocations or terms.
- Where do these figures come from?
- Structured founder funding records: total raised, round stage, round amount, round date and named participants. They exclude valuation, terms and board composition.
