The most important structural fact about climate technology investing in 2025 is also the most underappreciated: we are spending roughly $70 billion per year in venture and growth equity on climate tech solutions, against a scientifically determined requirement of $3 trillion per year to stay on a 1.5°C pathway by 2050. This is not a rounding error. It is a structural funding gap of approximately 97%.
That gap is both a problem and an opportunity. For investors who understand where the technology is genuinely ready for capital deployment, where the policy environment has created durable tailwinds, and where the founding talent is deep enough to build companies that last, the climate technology sector offers some of the most asymmetric risk-return profiles available in venture capital today. This essay is our attempt to map that opportunity as we see it from inside our portfolio and our deal flow.
The Policy Tailwinds Are Real, Durable, and Underpriced
The passage of the Inflation Reduction Act in August 2022 was the most significant piece of climate legislation in US history. Its $369 billion in clean energy incentives — including production tax credits for clean electricity generation, investment tax credits for energy storage, and direct pay provisions that make credits accessible to tax-exempt entities — created a structural demand signal for climate technology that was entirely absent before. For the first time, clean energy investment in the United States is not just doing the right thing; it is doing the economically rational thing.
The EU Green Deal provides comparable tailwinds in Europe: a binding commitment to cut net greenhouse gas emissions by 55% by 2030 relative to 1990 levels, backed by the Carbon Border Adjustment Mechanism that puts a price on embedded carbon in imported goods and creates a structural competitive advantage for low-carbon manufacturers. The UK, Canada, Australia, and Japan have enacted similar legislative frameworks.
What is underappreciated in venture markets is the durability of these tailwinds. The IRA was not a short-term stimulus package. Its tax credit provisions are structured as ten-year commitments, which is long enough to anchor investment decisions for projects with multi-year development cycles. The manufacturing tax credits, in particular, have already catalyzed over $280 billion in announced domestic clean energy manufacturing investments — a decade of factory construction that is largely locked in regardless of short-term policy shifts.
For venture investors, this policy environment changes the risk calculus materially. Climate technology companies that are deploying proven technology and operating within the IRA's incentive structure are not speculative bets — they are investments in businesses operating in a government-subsidized market with legally contracted demand. The risk profile is fundamentally different from a pre-IRA climate tech investment.
Five Sub-Sectors at the Inflection Point
We track five climate technology sub-sectors closely. Here is our current assessment of where each stands on the technology-adoption S-curve, and where the most compelling investment opportunities lie.
1. Carbon Removal and Utilization
Direct air carbon capture has moved from a scientific curiosity to a commercially deployed technology in the span of five years. The cost curve has followed a pattern strikingly similar to solar PV: costs are halving approximately every five years as engineering optimization, economies of scale, and material science innovations compound. In 2020, DAC cost approximately $600 per ton. Today's leading systems, including our portfolio company TerraBlue, are achieving sub-$150/ton in commercial deployments. Our base case for the sector is sub-$100/ton by 2028 and sub-$50/ton by 2033.
The investment opportunity today is in second-generation and third-generation technologies — enhanced weathering, ocean alkalinity enhancement, and direct ocean capture — where costs are still high but the fundamental chemistry is proven and the learning curve is steep. The companies that establish manufacturing scale and deployment infrastructure in the next three years will dominate the carbon removal market for decades.
2. Clean Energy Infrastructure
Solar and wind generation are no longer venture opportunities — they are infrastructure asset classes. The venture opportunity in clean energy has shifted to the enabling infrastructure: grid-scale battery storage (particularly non-lithium chemistries for long-duration storage), grid management software, virtual power plant orchestration, and the electrification of commercial buildings and industrial processes.
Community solar — the model pursued by our portfolio company SolarGrid — represents a particularly compelling structural opportunity. Nearly half of US households cannot access rooftop solar due to renter status, roof orientation, or shared housing arrangements. Community solar resolves this by allowing anyone to subscribe to a share of off-site solar capacity. With 40 states now having enacted community solar legislation and the IRA providing direct pay credits for community solar development, the policy environment has never been more favorable. SolarGrid's ability to serve 45,000 households with an average 28% energy bill reduction is a commercial proof point for a market we believe will reach $40 billion in annual revenue by 2030.
3. Climate Risk Analytics and Financial Infrastructure
Physical climate risk — the risk that floods, wildfires, hurricanes, droughts, and sea level rise will damage physical assets — is not priced accurately in financial markets today. Banks hold mortgage portfolios with significant flood risk exposure that is not reflected in loan pricing. Insurance companies are systematically underpricing wildfire risk in Western US markets. Real estate investment trusts hold assets in coastal areas facing sea level rise on thirty-year timelines that are not captured in standard discounted cash flow models.
Regulatory pressure is changing this rapidly. The SEC's climate disclosure rules, the IFRS Sustainability Disclosure Standards, and the Basel Committee's guidelines on climate-related financial risks are all creating a compliance-driven demand for sophisticated climate risk modeling. ClimateAI, our portfolio company, is building the enterprise platform that enables financial institutions to move from qualitative climate risk statements to quantitative portfolio-level climate risk measurement. The total addressable market for climate risk analytics is $12 billion globally by 2030, and it barely existed two years ago.
4. Circular Economy and Industrial Decarbonization
The circular economy is undergoing a B2B SaaS moment. The challenge of coordinating the flow of industrial materials — identifying who has waste, who can use it, what logistics are required, what certifications are needed for regulatory compliance — has historically been managed by phone calls and spreadsheets. Digital B2B marketplaces like our portfolio company CircleEcon are replacing this with real-time matching, automated logistics coordination, and compliance documentation. CircleEcon's GMV exceeding $120M annually on 180,000 tons of material is a commercial proof point for a market that we estimate processes less than 5% of global industrial waste flows digitally today.
The deeper opportunity in industrial decarbonization — green hydrogen, industrial heat electrification, carbon capture for hard-to-abate sectors like cement and steel — is capital-intensive and longer-cycle, better suited to infrastructure funds and project finance than venture. But the software and analytics layer enabling industrial companies to measure, manage, and reduce their Scope 1 and Scope 2 emissions is a genuine venture opportunity where we are actively looking.
5. Climate Adaptation and Resilience
The climate technology sector has been dominated by mitigation — reducing greenhouse gas emissions. The adaptation sector — building resilience to climate impacts that are now locked in regardless of mitigation success — has been dramatically underinvested. We believe this will change over the next five years as physical climate impacts become undeniable and insurance markets force adaptation costs into the economy.
The adaptation opportunity spans water security (our portfolio company ClearFlow is building modular water purification infrastructure for communities without reliable municipal supply), coastal and flood resilience infrastructure, heat-resilient urban design, and climate-adaptive agriculture. ClearFlow's deployment in 120 communities across three continents is an early proof point for a market that we estimate will exceed $300 billion globally by 2035 as climate-driven water insecurity becomes a mainstream planning assumption for municipal governments and development finance institutions.
The Funding Gap: Where Venture Capital Can Actually Move the Needle
The $3 trillion annual investment requirement for the climate transition is dominated by large-scale infrastructure deployment that is not appropriate for venture capital: utility-scale renewable energy projects, transmission infrastructure, building retrofit programs, EV charging networks. These require patient capital, project finance, and government co-investment — not venture returns.
The appropriate venture capital role in the climate transition is concentrated in three areas: breakthrough technology development (getting new technologies from lab to commercial deployment), software and analytics infrastructure (the digital layer enabling the physical climate economy to operate efficiently), and business model innovation (new approaches to financing, distributing, and operating climate solutions at scale).
By our estimate, the venture-appropriate portion of the climate investment gap — the $150 to $200 billion per year that requires the kind of risk capital and operational support that venture firms provide — is currently being addressed by roughly $30 to $40 billion per year in venture and growth equity. The gap is large, but it is venture-sized. And unlike the infrastructure gap, it is genuinely closeable over the next decade as institutional investors increase climate allocations and new climate-focused funds reach scale.
"We are in the early innings of the climate tech investment supercycle. The IRA is doing for climate tech what the internet did for software — creating a structural demand environment that will sustain a generation of category-defining companies. The founders building those companies are in the market right now." — Sarah Williams, Principal, Sway for Future
What We Look For: Our Climate Tech Investment Criteria
Given the breadth of the climate opportunity, we have developed a specific set of criteria for where we focus our investment activity. Not all climate technology is created equal, and the sector has attracted its share of capital-intensive vanity projects and impact-washed conventional businesses.
We look for climate tech companies that share three characteristics. First, a genuine technology or business model innovation that addresses a problem that is not solvable with existing tools — not an incremental improvement, but a fundamentally different approach. Second, a path to unit economics that does not depend on permanent subsidy. IRA credits and carbon pricing are enabling conditions, not business models — we want to back companies that will be viable even if policy environments shift. Third, a founding team with authentic domain expertise in the specific technical and market context of their company. Climate technology is technically demanding and commercially complex; founders without deep domain knowledge consistently underestimate the challenges.
Three Predictions for 2025–2030
Prediction 1: DAC Costs Below $100/Ton by 2028
The direct air capture cost curve is following a steeper learning curve than most analysts projected two years ago. With five commercial-scale facilities now operational globally and ten more under construction, manufacturing optimization and process efficiency improvements are compounding rapidly. We expect the first sub-$100/ton facility to be announced before 2028, with the industry average reaching $100/ton by 2030. This will be the moment that DAC transitions from a premium product bought by compliance-motivated corporations to a broadly economic solution for hard-to-abate emissions.
Prediction 2: Mandatory Physical Climate Risk Disclosure for Public Companies by 2026
The SEC's climate disclosure rules face ongoing litigation, but the global trend toward mandatory climate risk disclosure is irreversible. ISSB standards are already mandatory in several jurisdictions, and the EU's CSRD creates mandatory disclosure requirements for European subsidiaries of US companies. We expect the effective universalization of climate risk disclosure for public companies by 2026, creating a $5B+ annual compliance market and dramatically accelerating demand for the climate risk analytics platforms being built today.
Prediction 3: Circular Economy Reaches Mainstream B2B Commerce by 2027
The combination of EU Extended Producer Responsibility regulations, Scope 3 emissions reporting requirements, and economic pressures from commodity price volatility will push circular economy practices from early adopters to mainstream enterprise procurement by 2027. Companies like CircleEcon that have built the digital infrastructure for circular material flows will be positioned as essential B2B infrastructure rather than sustainability tools — a classification shift that will significantly expand their addressable market and buyer urgency.
The climate opportunity is real, large, and accelerating. We are in a moment where the policy environment, the technology readiness, and the talent quality are converging to make climate technology one of the most compelling venture investment opportunities of the decade. If you are building in this space, we want to talk to you.