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#21 · Emerging 100 · 2026

Lowercarbon Capital

lowercarboncapital.com · Jackson, Wyoming

“Climate solutions must be economically viable businesses. Fund technologies that profitably slash CO2 emissions, remove carbon from the atmosphere, and build climate resilience.”

$1M – $15M
Check Size
Leads
Lead Tendency
$2.4B
AUM
~1 Month
Timeline
01Investment Thesis

Back technical founders solving "crazy scale" problems with 5-10+ year horizons.

Exclusion Criteria

Vaporware, unproven technology without clear scale path, ventures without strong technical teams, fashion/consumer goods without genuine climate impact

02Investment Team
CS
Chris Sacca
Managing Partner & Co-founder
CS
Crystal Sacca
Founding Partner & Co-founder
CD
Clay Dumas
General Partner
RO
Ryan Orbuch
Partner
SY
Shuo Yang
Partner
SX
Shawn Xu
Partner
CK
Caie Kelley
Partner
LF
Lauren Faber O'Connor
Partner
DS
Dr. Scott C. Hsu
Fusion Partner
03F4 Research Brief

Lowercarbon Capital Research Document

Investment Thesis

Lowercarbon Capital backs "kickass companies" that make real money slashing CO₂ emissions, sucking carbon out of the sky, and buying humanity time to decarbonize the planet. Founded in 2018 by Chris Sacca and Crystal Sacca, the firm believes climate solutions must be economically viable businesses, not just feel-good projects. Their approach is pragmatic: fund technologies that are genuinely profitable while addressing the existential climate crisis.

The firm organizes its investment thesis into three core pillars:

1. Slashing New CO₂ Emissions - Until new emissions hit zero, temperatures will keep rising. The firm funds technologies that reduce sources of carbon dioxide, methane, and other greenhouse gases across energy and transportation, industrial materials, and agriculture.

2. Sucking Up Carbon - Recognizing we cannot zero out historical emissions overnight, Lowercarbon invests heavily in carbon removal technologies. The global economy needs to suck at least a trillion tons of CO₂ out of the atmosphere by 2100. The fund has positioned itself as a leading investor in Direct Air Capture (DAC) and carbon removal.

3. Buying More Time - As climate impacts accelerate (rising temperatures, wildfires, droughts, storms), the firm also invests in climate adaptation and resilience technologies, including geoengineering solutions to potentially cool the planet if carbon removal breakthroughs don't arrive fast enough.

Portfolio Strategy & Scale

Lowercarbon Capital manages approximately $2.4 billion in assets under management across multiple funds, making it one of the largest climate-focused venture capital firms globally. The firm has invested in 207+ companies across its portfolio, demonstrating a substantial and diversified approach to climate tech investing.

The portfolio is remarkably broad, spanning:

  • Energy: Solar, wind, battery storage, grid technology, hydrogen, fusion
  • Transportation: Electric vehicles (bikes, motorcycles, boats, planes, trucks), charging infrastructure
  • Industrial Materials: Carbon-neutral cement, steel, chemicals, synthetic materials
  • Agriculture & Food: Alternative proteins, sustainable fertilizers, precision agriculture
  • Carbon Removal: DAC (Direct Air Capture), geological storage, nature-based removal, carbon credits/verification
  • Climate Adaptation: Insurance, disaster prediction, resilience infrastructure
  • Software & Services: APIs for climate financing, ESG tracking, energy management

Notable portfolio companies include: Commonwealth Fusion Systems, Crusoe Energy, Solugen, Mill, Mosa Meat, Carbon Engineering, Twelve, Verdox, Charm Industrial, Isometric, Crux, Antora, Heart (electric aircraft), and over 150 others.

Team & Leadership

Leadership Structure: Partnership model with deep domain expertise

Key Partners:

  • Chris Sacca (Managing Partner, Co-founder) - Former head of Special Initiatives at Google, founder of Lowercase Capital (which backed Uber, Twitter, Instagram, Stripe). Named #2 on Forbes Midas List. Two-time Shark Tank cast member.
  • Crystal Sacca (Founding Partner, Co-founder) - Co-founder of Lowercase Capital, deep expertise in venture capital and founder support
  • Clay Dumas (General Partner) - Portfolio operations and founder support specialist
  • Ryan Orbuch (Partner) - Deep expertise in climate tech and operations
  • Shuo Yang (Partner) - Technical infrastructure and innovation
  • Shawn Xu (Partner) - Capital deployment and deal sourcing
  • Caie Kelley (Partner) - Climate tech sector expertise
  • Lauren Faber O'Connor (Partner) - Portfolio strategy and founder support
  • Dr. Scott C. Hsu (Fusion Partner) - Specialized expertise in fusion technology investments

Additional Leadership: Christian Bjelland (Head of Capital Formation), Monique Guimond (Head of Portfolio Strategy), Melissa Waystack (Head of Finance), Alexandra Frumar (General Counsel), Kyle Taylor (Director of Product), and Principals Duncan Carlson, Eric Helfgott, Sidney Brown.

Stage Focus & Check Size

Stage Preferences: Seed through Series A, with selective Pre-Seed and Growth-stage investments

Investment Sizes:

  • Seed stage: Typical checks of $1M-$5M
  • Series A: Typical checks of $5M-$15M+
  • The firm has capacity for larger checks and growth-stage follow-ons given its $2.4B AUM

Investment Activity: Actively deploying capital with recent investments including Avalanche (January 2026), Getmobil $22M Series A (December 2025), Fuse Energy (December 2025), and multiple portfolio companies in active growth phases.

Lead Tendency & Decision Process

Lead Tendency: Leads - Lowercarbon actively leads rounds and has capacity to be solo or co-lead investor. Portfolio founder testimonials specifically praise the firm for leading their seed rounds and providing hands-on support.

Decision Timeline: 1-2 months - As a mid-sized VC with deep expertise, the firm can move quickly on strong climate tech opportunities but conducts technical and market due diligence.

Decision Process: Partnership-based with involvement of core partners and relevant specialists (e.g., fusion investments involve Dr. Hsu).

Warm Introductions: Highly beneficial given founder-focused culture and preference for technical founders.

Typical Involvement: Board seat or observer rights for seed/Series A investments. Hands-on portfolio support including technical mentorship, founder introductions, and ecosystem connectivity.

Geographic Focus

Primary: United States (SF Bay Area, New York, other tech hubs) Secondary: International expansion to high-impact climate markets including Brazil, India, Europe (UK, Germany), Israel

Recent Activity & Fund Status

Fund Status: Actively deploying - The firm is in active capital deployment mode

Latest Initiatives:

  • Launched Q>1 Fund in 2025 - Dedicated fusion-focused fund
  • Raised second fusion-focused fund in November 2025
  • Expanding into emerging markets climate tech (Africa, India, Southeast Asia)

Recent Notable Investments:

  • 2025: Led multiple Series A rounds (Crux, Getmobil)
  • 2025: Continued fusion fund deployment
  • 2026: Portfolio company Avalanche (January)

Founder Preferences & Investment Philosophy

Based on portfolio composition and team backgrounds, Lowercarbon backs:

  1. Technical Founders - Former engineers from Google, Tesla, major labs
  2. Ambitious Problem Solvers - Teams tackling "crazy" scale problems
  3. Pragmatic Doers - Understanding business model and path to profitability
  4. Domain Expertise - Deep technical knowledge of their sector

Hands-On Support: Portfolio founder testimonials unanimously praise the team's ability to provide technical mentorship, founder connections, product guidance, and early customer introductions.

Ecosystem Building: The firm actively connects portfolio companies and leverages founder networks for syndication.

04Selected Portfolio
Climate & Sustainability
Carbon Engineering·Twelve·Verdox·Zanskar·Cloover·Solar Square·Ulysses
Consumer Apps & Social
Charm Industrial
Crypto & Web3
Avalanche
Developer Tools & Infrastructure
Crusoe Energy
E-commerce & Marketplaces
Crux·Getmobil·Emerald AI
Energy & Power
Commonwealth Fusion Systems·Lilac Solutions·Overview Energy·Thea Energy·Panthalassa·Antora
Enterprise Software
Sublime Systems·Earthmover·Crusoe·Stand·Longview Restoration
Fintech & Payments
Fuse
Food & Beverage
Mill·Mosa Meat
Logistics & Supply Chain
Bright Harbor
Manufacturing & Industrial
Solugen·Arc Boats
Other
Isometric·Heart·Kula
Open the full portfolio→
05Recent Updates

Fresh signals from public announcements, essays, and portfolio activity.

See full activity (25) →
Lowercarbon portfolio company Crusoe Energy raised a Series F round (valuation undisclosed) in September 2026. Crusoe operates cloud platforms for AI workloads powered by environmentally-aligned energy sources. Lowercarbon had previously participated in Crusoe's Series E.
INVESTMENT·tracxn.com
SEP 4, 2026
Chris Sacca published 'Act II: Lowercarbon Capital' - a definitive essay laying out the firm's reinvestment thesis in climate tech. The essay argues that markets (not policy, philanthropy, or guilt) will solve the climate crisis, and that Lowercarbon backs companies that profitably slash CO2 emissions. The firm has grown to a portfolio of over 30 climate teams and is investing personal capital through partners Chris Sacca, Crystal Sacca and Clay Dumas.
ESSAY·lowercarbon.com
AUG 26, 2026
Lowercarbon Capital led the seed round for Longview Restoration, a tech-enabled restoration contractor platform that rebuilds homes after natural disasters. The company has grown revenue to $15M and is profitable.
INVESTMENT·lowercarbon.com
AUG 26, 2026
Heart Aerospace's X1 demonstration electric aircraft (30-seat) completed its inaugural flight at Plattsburgh International Airport, climbing 1,100 feet and landing 8 minutes later. It is the largest electric battery plane to ever take flight. Lowercarbon invested in Heart when it was just a few sketches.
MILESTONE·lowercarbon.com
AUG 13, 2026
Lowercarbon Capital participated in Antora's Series C round alongside G2 Venture Partners and others. Antora makes thermal batteries that convert renewable energy into industrial heat.
INVESTMENT·tracxn.com
JUL 20, 2026
06Frequent co-investors
AV
Azolla Ventures
Both backed 4 of the same companies
Verdox, Sublime Systems, Charm Industrial, Lilac Solutions
EV
Engine Ventures
Both backed 4 of the same companies
Overview Energy, Commonwealth Fusion Systems, Sublime Systems, Lilac Solutions
MC
My Climate Journey Collective
Both backed 4 of the same companies
Mill, Crusoe Energy, Commonwealth Fusion Systems, Sublime Systems
PI
Prime Impact Fund
Both backed 4 of the same companies
Verdox, Sublime Systems, Charm Industrial, Lilac Solutions
SV
Starlight Ventures
Both backed 4 of the same companies
Twelve, Thea Energy, Commonwealth Fusion Systems, Carbon Engineering
Find the investors for your round→
07Similar Firms
PV
Prelude Ventures
$100K – $5M · Pre-Seed · Seed
→
GC
Gigascale Capital
$500K – $5M · Pre-Seed · Seed
→
BE
Breakthrough Energy Ventures
$500K – $50M · Seed · Series A
→
AV
Azolla Ventures
Pre-Seed · Seed
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MC
My Climate Journey Collective
$500K – $3M · Pre-Seed · Seed
→
Quick Reference
Check Size
$1M – $15M
Stages
Seed · Series A
AUM
$2.4B
Decision
Partnership · ~1 Month
Warm Intro
Not Required
Involvement
Board Seat
Location
Jackson, Wyoming
Sector Focus
Climate & SustainabilityEnterprise SoftwareDeveloper Tools & InfrastructureEnergy & Power
Models
Climate TechDeep TechHardwareEnergyTransportationMaterials Science
Technology
Energy StorageFusionSolarWindCarbon RemovalBattery TechHydrogen
See all Climate & Sustainability investors →See all Enterprise Software investors →See all Developer Tools & Infrastructure investors →
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Focus Areas
Climate & SustainabilityEnterprise SoftwareDeveloper Tools & InfrastructureEnergy & Power

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F4 Intelligence Report · Last Researched September 18, 2026F4 Research Engine