Specialist · Toronto, ON

ArcTern Ventures

Climate-first capital for clean energy, clean compute and clean industry founders.

← Investors in Ontario
Cheque
Not disclosed
Role
Can lead a round
Pace
Actively deploying
Kind
Specialist
Based in
Toronto, ON
Vehicle size
$450M
Founded
2012
Works in
EN
Last deal seen
August 2026
Stages
Series A, Series B and later
Sectors
Climate and energy, Deeptech and hardware, AI and machine learning

Their thesis, in full

ArcTern Ventures is a climate-first investor and one of the largest VC funds dedicated to climate worldwide. The firm now invests at the intersection of climate and intelligence, around three pillars it calls sustainable intelligence: clean energy, delivering zero-carbon power at the scale the economy and AI now demand; clean compute, making computing radically more energy efficient from silicon to data centre to model; and clean industry, pointing AI and robotics at the hardest-to-abate physical processes. ArcTern backs early growth-stage companies, particularly those raising a Series A or Series B, and frequently leads. Fund III closed in January 2024 at US$335M (about $450M CAD), oversubscribed, with institutional LPs including TD Bank Group, Allianz, OPTrust and Church Pension Group, and is registered as an Article 9 fund under the EU SFDR. Offices in Toronto, Oslo and San Francisco give access to industrial experts, corporate partners and pilot customers across Europe and North America.

What they bring past the cheque

  • Climate expertise
  • Industrial pilots
  • Corporate intros
  • Europe network
  • Carbon measurement

Questions they usually ask

Have an answer ready for each one before the first call.

  1. What is your unit economics at 10x scale, and what drives it?
  2. Which industrial off-taker has signed an LOI or paid pilot?
  3. How do you measure and verify carbon impact per dollar deployed?

Follow-on

Reserves substantial follow-on capital and regularly re-invests as an existing investor in later rounds, including Series C, alongside the new leads.

Who to talk to

Portfolio

Names they back, most notable first.

  • Muon SpaceSeries B+ · 2026
  • HarbingerSeries B+ · 2025
  • HyperlumeSeed · 2025
  • Cyclic MaterialsSeries B+ · 2024
  • Liminal InsightsSeries A · 2023

Often in the same rounds

Investors seen alongside them in past rounds.

Similar investors

Overlapping sectors and stages. Useful to build a list of 10 to 20 names for one round.

See how they fit your round

Set your stage, sector and amount once. Fractal App tells you if ArcTern Ventures can lead it, tracks every follow-up, and counts the days of silence. Free, no card.

Open in the app →

Checked September 2026 from public sources. source ↗ · Website ↗ · LinkedIn ↗