Best Series A Climate & Clean Energy + Aerospace & Defense Investors 2026

Passion and vision matter more than pedigree. We seek founders with grit, audacity, and a spark of rebellion—regardless of background. We invest early, before success is inevitable, and support founders from 0-to-1 through Series A.

Identifying culturally resonant, consumer-focused companies with differentiated products and founder teams that will capture global attention. We invest across technology, consumer behavior, entertainment, and culture—seeking to spot emerging trends before they reach mainstream awareness. We operate as a partnership combining rigorous deal selection with exceptional founder support, creative marketing, and deep understanding of consumer psychology.

The most enduring companies are created by founders willing to commercialize real science and scale real systems. We focus on hard tech at the intersection of computation and physical sciences—aerospace, biotech, energy, materials—where technical execution is the moat.

Top-tier venture capital returns alongside meaningful social, environmental, and economic impact — the Double Bottom Line — with no tradeoff. DBL invests in mission-driven founders across clean energy, agriculture, nature-based solutions, health, economic opportunity, mobility, and the space/Earth nexus.

Investing in breakthrough deep technologies that address humanity's greatest challenges. We allocate ~80% to climate solutions (carbon-negative materials, renewable energy, climate adaptation) and ~20% to frontier tech (aerospace, robotics, advanced materials, biotech). We operate as a venture-and-philanthropy platform backed by the Fukutake family, blending profit-seeking with impact objectives.

Exceptional talent and innovation exist beyond coastal venture capital hubs. We partner with mission-driven entrepreneurs to build companies of impact, utility, and value in the Rocky Mountain region. Technical founders with regional commitment and proven execution ability are our ideal partners.

Founders with military backgrounds and demonstrated grit combined with differentiated dual-use technology create exceptional venture opportunities. We focus on pre-seed and seed-stage companies solving meaningful problems that make the country and allies safer while having strong commercial applications.

The space economy represents the next frontier for transformative economic opportunity and meaningful impact. We back pioneering founders building the technologies and services that enable humanity's expansion into space while creating value on Earth. We apply financial discipline (Wall Street cash-flow and intrinsic-value approach) to identify sustainable, scalable space businesses.

We back determined builders working on hard problems in critical domains. Real innovation is non-obvious at first and often misunderstood. We support contrarian founders during frontier exploration when they need it most.

We back 'sub-0.1% of the population' type exceptional founders building fundamental, infrastructure-level technologies in critical sectors (computing, defence, energy) reshaping our world. Community-driven approach provides proprietary deal flow and deep technical credibility. Focus on first cheques in pre-seed/seed with hands-on mentorship and network access.

Investing in inevitable deep tech. Back visionary founders building transformational companies in domains where technological disruption is predetermined, not probable. Focus on early scale inflection points where companies move from potential to proven commercial viability.

Founders building the possibly impossible deserve capital plus marketing support. Great technology combined with exceptional storytelling and narrative development creates world-changing moonshots. We provide both the capital and the story-telling expertise to help founders achieve escape velocity.

Backs mission-critical technology companies in Defense, Energy, Industrials, and AI — specifically applied AI solving tangible physical problems. Invests from a network of 150+ operators from Palantir, Anduril, and SpaceX.

Intelligence is coming into the physical world through AI and robotics applied to atoms rather than bits. We back capex-heavy, long-horizon bets in hard-to-abate decarbonization sectors and hardware-heavy industrial systems that many traditional early-stage funds avoid.

Back deeptech entrepreneurs with deep technical expertise, integrity-driven vision, and complex problem-solving capabilities working at intersections of space, autonomous mobility, advanced materials, quantum computing, and climate technology. Use aerospace systems lens to identify dual-use deep-science technologies with extraordinary technical leadership and first-principles engineering expertise capable of unlocking entirely new economies.

Technology will define geopolitics. We invest in the Freedom Stack—foundational technologies critical to American national security and technological leadership. We partner with mission-driven founders building capabilities essential to American prosperity and strategic advantage.

Canadians have built over $1 trillion in enterprise value globally, yet were initially backed by US VC not Canadian investors. We back founders with Canadian roots—regardless of where they build—because exceptional talent from Canada represents a sustainable, quantifiable selection edge.

Invest in only two kinds of technologies: those that move humanity toward utopia, and those that hold the line against oblivion. Back n-of-1 visions for an era of Black Swans—unconventional companies solving civilization-scale problems that others dismiss as too early, too risky, or too misunderstood.

Scalable, defensible innovation at the intersection of software, hardware, and intelligence. Champion founders driving the next wave of technological innovation across Cloud, Devices, Frontier, and Silicon domains. Breakthrough technologies emerge from convergence of multiple domains.

Mantis invests opportunistically in Seed and Series A technology-enabled startups, leveraging deep social capital across tech, media, entertainment, and finance to provide unmatched GTM support. The firm is founder-obsessed and differentiates through celebrity network access, customer introductions, talent acquisition help, and brand amplification.

We back founders on a mission to industrialize scientific and technological progress. Hardtech startups solve difficult technological problems using interdisciplinary mixes of technology and engineering. We provide patient, supportive capital and community to help founders navigate R&D cycles and build technically defensible products.

Permanent balance-sheet investor backing highly defensible, category-defining, mission-driven companies solving the world's biggest problems. Focus on founders transforming legacy industries with emphasis on diversity, equity, and inclusion.

Climate is the biggest challenge of our lifetime and the greatest business opportunity of the coming decades. We back visionaries accelerating climate innovation that will reshape our global economy for the betterment of people and planet. The most successful companies are born from a vision for a better future and the ability of that vision to create large, lasting positive impact. We invest in frontier technologies addressing climate across seven sectors: Built Environment, Carbon Management, Compute, Energy, Food & Agriculture, Manufacturing & Industrials, and Mobility. The best ideas come from everywhere—we operate where many venture firms can't or won't.

Investing in founders building critical software that addresses the decay of Western infrastructure, institutions, and industrial base. Ravelin backs software-defined transformation of aerospace, defense, manufacturing, energy, and industrial sectors.

Identify and invest in the world's top talent before they start a company. Build lifelong relationships through a proprietary university scout network at Stanford, MIT, Harvard, and other elite universities. Back exceptional founders within 1-3 years of graduation before they are widely recognized.

Back determined founders with uncommon insights solving the world's biggest problems through transformative deeptech. Focus on moonshots: multi-billion-dollar, step-change opportunities across Future Compute (quantum, alternative architectures), Defense & Dual-Use (aerospace, strategic tech), Smart Planet (robotics, climate, materials), and Humantech (AR/VR, interfaces). Frame investments through free-world resilience lens, prioritizing Western technological independence. Support founders through capital, operational guidance, technical expertise, and extensive networks.

Deep technology and hard tech company investing at inflection points. Partner with technical founders building infrastructure-level solutions for global scale. Founded 2010 on belief that next generation of transformative companies require deep technical expertise, not just capital.

Global environmental challenges cannot be solved by established mega-corporations alone, but rather require breakthrough innovation from a diverse set of new companies. We combine venture capital with integrated storytelling and media to create culture-defining content around climate solutions and sustainable technology adoption.

The next two decades will see dramatic changes in mobility across ground, air, sea, and space. We invest in entrepreneurs building frontier technologies that make movement cleaner, faster, safer, and lower-cost, leveraging our extensive relationships with global companies.

We democratize venture capital by providing individual accredited investors with professional-grade access to elite venture opportunities. We leverage our massive 850,000+ community network and 11,000+ investors to create unique value for founders, sourcing and diligencing deals alongside top-tier VCs (a16z, Sequoia, Khosla) without leading rounds. Our network is our competitive advantage—it compounds value for all stakeholders.

Back mission-driven founders addressing significant global challenges through leading-edge technology. Provide flexible and patient capital, leveraging our time, resources, and networks to support portfolio company success. Focus on founders with authentic social and environmental missions alongside commercial viability.

Brands and technologies reshaping culture. Align invests in early-stage consumer brands with strong brand equity and unit economics, and in frontier technologies (AI/robotics, clean energy, defense) transforming how people live and work. First-check conviction investor with meaningful follow-on capital and co-investment access.

Kindred backs visionary and relentless founders building the future using technology and science at the earliest stages, often helping form companies before they exist. With Kindred Ventures IV and Kindred Selector II, the firm is emphasizing the novel intelligence frontier: AGI-capable models and harnesses that extend human capabilities, new AI-native consumer and enterprise experiences, physical AI, compute, infrastructure, energy, science, outer space, and inner space.

Prime Movers Lab partners with serial entrepreneurs building breakthrough scientific companies that tackle the world's biggest problems. We believe the best venture partners provide operational excellence, technical expertise, and hands-on support—not just capital. We invest in companies reinventing energy, transportation, infrastructure, manufacturing, human augmentation, and agriculture.

Digital transformation of the enterprise in Japan. Backs ambitious startups with a tech component aiming to scale both domestically and internationally. Fund VII focuses on AI/deep tech, energy transition, inbound tourism, and defense. Founded by recovering entrepreneurs who believe operator experience makes better investors.

Inertia invests in AI-native companies built to become core infrastructure for legacy industries, especially platforms operating in regulated, context-heavy, and physical-world workflows where durable data, compliance, audit trails, or embodied operations create compounding advantages.

Foundational industries (manufacturing, logistics, defense, energy) have been neglected for decades. Tech founders can unlock trillions in value by applying software, AI, automation, and cloud infrastructure to transform these sectors. This is the largest venture opportunity: tripling the Industrials market cap from $3.7T to $55T by 2050.

Partner with visionary founders building category-defining frontier technologies that address humanity's most pressing problems. We invest in deep tech, hardware, and climate solutions emerging from technical communities like SpaceX, focusing on founders with big ambitions, not incremental ideas.

Industry 4.0 thesis: transformation and decarbonization of industrial economy requires unprecedented digital infrastructure. Convergence of AI and industrial policy creates opportunity to digitize/decarbonize physical asset base while improving resource efficiency and national security.

We back entrepreneurs using computational approaches (AI, simulation) to solve trillion-dollar problems in climate, health, industrial transformation, and national security. Deep tech requires patient capital and scientific rigor.

Transformative national security solutions emerge from early-stage private-sector startups developing frontier technologies. IQT identifies, evaluates, and leverages innovations to accelerate government adoption while enhancing commercial success. As of May 2026, IQT is emphasizing mission investing through fewer larger bets in autonomy, contested logistics, critical infrastructure, and technologies that can move to mission use quickly.

Back wild hearts with the wildest ideas from the very beginning. Invest in companies, not rounds — following exceptional founders from pre-seed through all subsequent stages. Focused on ANZ founders building globally ambitious companies across any sector.

Technology-based economic disruption of large markets through black swan investments. We seek founders with domain expertise and unreasonable conviction to build billion-dollar companies solving the world's largest problems.

Celesta invests in brilliance at the forefront of science and engineering, targeting companies that enable mass adoption of emerging tech, radically improve health outcomes, and transform large industries. Focus on platforms enabling emerging tech adoption, bioconvergence innovations (high-tech + biotech), and technologies disrupting legacy industries with deep tech.

Soma invests in technical founders building innovative companies across all sectors. We believe in building deep friendships day 1 with brilliant superhumans pushing humanity forward. Our founder-first approach emphasizes non-dilutive capital, founder autonomy, and access to Fortune 500 networks for customer development.

We back the companies of tomorrow before it's obvious. We combine early-stage European investing with a permanent San Francisco presence to help founders build category-defining global companies. We invest in ambitious technical founders who deeply understand industry transformation.

We back dropouts, renegade students, and deep-tech scientists working on ideas that would appear in science fiction. We exist to prove that great founders don't need university degrees and are found in the oddest places. We invest at inception stage (R&D through Seed), providing capital, mentorship, community access, and operational support. People-first approach: it's more about the who than the what.

Turn sci-fi into sci-fact by backing founders solving the most vexing puzzles facing humanity. We believe in counter-conventional solutions and contrarian positions in deep technology. We champion companies working at the intersection of breakthrough science and transformational technology, led by visionary founders who are equal parts mad scientist and business mastermind.

Back founders building iconic companies that transcend boundaries. We invest directly in their growth to make them unbreakable. Founded on principle that luck isn't made, it's engineered. Founders are our customer, not LPs. We always vote shares with founders and provide 1% non-dilutive founder development capital alongside every first check.

Back exceptional Kiwi founders building globally transformative companies, from day one to IPO. New Zealand founders represent a significantly undervalued asset class, and Icehouse provides capital plus an ecosystem of 3,000+ investors and deep operational support.

We invest in paradigm shifters—truly disruptive technologies that change our perspective of the world. We believe in missionary founders committed to their vision, and we focus on business-team-idea-timing fit, not just product-market fit. We target transformative companies across defense, climate, fintech, legal tech, and emerging domains.

Female founders build exceptional companies that outperform their male peers. We invest in category-defining female leaders with strong points of view who are reshaping their markets, backed by community and supported by a visible ecosystem.

Amplify founder impact through capital paired with deep expertise in government market access, federal R&D funding capture, and government contracting strategy. Focus on dual-use technologies addressing national security, defense, energy, and infrastructure challenges.

The best ideas don't come from a screen—they're born offline in the real world. We invest in founders who build differently, prioritizing how they build as much as what they build. We believe original thinking, human-centric innovation, and founder wellness are prerequisites for building great companies.

We invest in mission-driven companies that dare to tackle impossible challenges, striving to transform industries and create lasting societal impact. We seek founders with audacity to dream big, resilience to persevere, and potential to build forever companies that shape human history.

Lightbank invests in disruptive technology companies led by great founders in dynamic markets with world-class products. The firm believes exceptional founders and opportunities exist everywhere, especially in overlooked geographies like the Midwest. We partner with early-stage founders and provide operator-heavy support beyond capital.

Backing exceptional, mission-driven entrepreneurs creating companies with Massively Transformative Purpose (MTP) that impact billions of people. We invest across the full innovation lifecycle, from early-stage frontier technology through scale to liquidity. We love companies and individuals that are different, fishing where others aren't, seeking opportunities where exceptional visionary entrepreneurs see novel paths to greatness.

Invest in bold, visionary founders building transformational businesses long before the world believes in them. We back founders solving impossible-seeming problems across frontier sectors: AI/robotics, crypto, biotech, aerospace, and unconventional ideas.

Entrepreneurs who work constructively with government to harness its unique strengths—scale, credibility, regulatory power, data, and funding—enjoy asymmetric advantages. 24% of venture-backed unicorns used government support. We partner with founders to unlock government as a growth lever.

Overlooked founders—Black, Indigenous, Latina/o, people of color, and women—possess exceptional resilience, adaptability, and market insight, positioning them to deliver outstanding financial returns alongside meaningful social impact. These mature, experienced founders (10-15 years mainstream business experience, average age 47) consistently outperform traditional benchmarks through superior capital efficiency and sustainable growth.

Entrepreneurs, not VCs, build great companies. We invest early in great & passionate entrepreneurs and serve as long-term partners. Available 24/7 to help founders with mentorship, product-market fit, fundraising, business development, customer acquisition, talent sourcing, and strategic partnerships.

Sand Hill Angels backs seed-stage, high-tech companies with large and growing markets, well-defined problems, disruptive solutions, defensible technology, and strong teams with demonstrated ability to execute. The group leverages 145+ experienced angels to provide capital, mentorship, and network access across the Silicon Valley ecosystem.

The smartest place you can invest your capital is in women. We bet on early-stage female-founded and female-led companies creating groundbreaking consumer and B2B software technologies that solve meaningful problems in families, healthcare, childcare, education, climate, and sustainability.

The primary constraint for seed-stage, science-based entrepreneurs is access to experienced business judgment. CDL provides objective-based mentoring from accomplished entrepreneurs, angels, and scientists to help founders prioritize tasks and de-risk their businesses.

We are a stage-agnostic venture capital firm investing in exceptional founders building the companies that shape our world.

Backs frontier deep tech companies solving physical infrastructure bottlenecks of the AI supercycle, especially compute, energy, quantum, AI infrastructure, robotics, and autonomous manufacturing across the U.S.-Israel corridor.

Equity of access and representation in venture capital delivers positive returns. Diverse and underrepresented (including LGBTQ+) leaders of high-growth companies deserve capital access. When these founders succeed, they influence ecosystems and open doors for historically excluded groups.

MaC backs visionary founders building category-defining companies with deep understanding of cultural shifts, technological advancements, and emerging market trends. Founders must demonstrate authentic insight into why their problem needs solving now, combined with ability to see how the world is changing. Particular focus on founders paying attention to shifts others might miss.

Culture-Tech companies that disrupt and define how we live, work, play, and interact with the world every day. We invest in passionate founders building transformative products that change cultural behaviors.

Back the world's most ambitious and transformative entrepreneurs capable of building world-defining companies over 20+ years. Invest in founders with independent thought and first-principles vision to solve humanity's biggest problems across all sectors and geographies.

Invest in the most promising Southern European (primarily Italian) deep-technology companies across Advanced Manufacturing, Life Science, and Energy & Environment, and actively support their expansion into Asian markets (China, South Korea, Japan, South-East Asia). The fund uses a proprietary evaluation framework and a 'pull model' — companies must demonstrate genuine Asian market interest before investment.

Invest in early-stage tech companies addressing world's largest market opportunities and solving humanity's biggest challenges. Leverage global distributed team to source, evaluate, and support transformational founders.