Rune raises $40M series a

◆ Amount

$40M

◆ Announced

19 Sept 2026

◆ Company

◆ Source

◆ The Round

Rune raised $40M in series a funding, announced on 19 September 2026, led by Spark Capital, with participation from Union Square Ventures, Lowercarbon Capital, Activate Capital, Committed Capital, Timeless Partners, Logos Fund. The round is tracked live by Fusion42 as part of the Raise fund database and the Scout startup database.

◆ About Rune

Rune develops RELIC, a modular compute system that installs directly at solar generation sites to convert curtailed and wasted solar power into AI compute. Rune is based in United States and currently at series a stage, operating in Clean Energy, AI & ML.

◆ Investors

◆ Investing funds on Raise

• Spark Capital
• Union Square Ventures
• Lowercarbon Capital
• Epicorp

◆ Market context

Spark Capital, Union Square Ventures, Lowercarbon Capital and Epicorp are profiled on Raise, Fusion42's database of venture funds — where each investor's thesis, cheque size and other tracked backings can be followed. This funding event is a citable node in Fusion42's market graph: it links Rune's Scout profile to the funds behind the round and to related Wire analysis, and is refreshed from public announcements as the round is confirmed or extended. It is the same live market data Arthur reasons over when benchmarking a founder's own raise against what is closing in the market right now.

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