What is Climate Tech?
Climate tech refers to technologies and services that enable decarbonization of the global economy. Climate tech companies develop products and services that leverage these technologies to mitigate and adapt to climate change, by removing existing carbon from the atmosphere, reducing future emissions or by increasing our resilience against the impacts of a changing climate. Since addressing climate change requires transformation across all sectors, climate tech companies span a wide variety of end markets and business models. Different stakeholders have different ways to define exactly what climate tech does and does not include, but subcategories generally converge around technologies that address the main sources of global emissions as defined in the most recent IPCC report[1]
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The energy sector may be further fragmented into innovative technologies focused on renewable energy generation, distributed energy solutions, battery storage, and power grid solutions. While the energy sector is quite mature, the decentralized nature of renewable energy technologies has disrupted the energy ecosystem through heighted private and public investment. The 2022 Inflation Reduction Act has served as a significant catalyst in the transition to America’s clean energy economy in the form of nearly $370 billion which many companies within the energy sector may benefit from. The global response to this green stimulus has been met by similar subsidization in key economic regions like the European Union where $270 billion in green subsidies have been designed to ensure a globally competitive playing field of clean energy innovators.
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The transportation sector is often associated with electric vehicle manufacturers but may also encompass other modes of transportation like rail, long haul trucking, public transport, and air travel. While the technological risks for passenger EV’s have been largely mitigated due to decreasing battery prices and government stimulus, some forms of transport likely require decades of innovation before alternative forms of climate friendly travel are likely. Greenhouse gas emissions from hard to abate industries like aviation are uniquely challenged. New entrants in this sector are currently experimenting with electric powered aircraft but ranges are limited, and complete fleet replacement of the global aviation complex will be dependent on entirely new engines capable of running on carbon free fuel sources like hydrogen.
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Industry can be best characterized by its underlying verticals like metals, mining, cement, steel & chemicals. Innovation within this sector offers the global economy significant opportunities for disruption. However, challenges do arise within this sector as traditional manufacturing or industrial processes are chemically dependent on fossil fuels or require significant energy inputs. Decarbonization of this sector requires novel solutions and there are a fair number of startups focusing their research on alternative manufacturing or material science methodologies. Regulation also poses a barrier for this segment especially. For example, most cement customers will only purchase “Portland Cement” which has certain physical properties. Startups like Sublime Systems will have to engage industry associations to ensure commercial success.
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The buildings sector includes emissions from energy consumption as well as embodied carbon associated with building construction, including those that arise from extracting, transporting, manufacturing, and installing buildings on-site as well as end-of-life emissions. Exciting decarbonization opportunities within the built environment offer several pathways for startups to reduce emissions within this sector. For example, many startups have begun to focus on smart-building software and sensors to increase energy consumption while other startups have focused on developing new construction techniques and materials utilizing lower carbon inputs.
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The agriculture sector accounts for close to 25% global greenhouse gases and offers significant opportunities for decarbonization. Deforestation and livestock management are key contributors for these sectoral emissions. Key innovations within agtech like precision agriculture, regenerative agriculture, sustainable crop farming and livestock management offer promising climate technologies to reduce environmental impacts.
In addition to technologies addressing the five main emissions sectors defined by the IPCC, a sixth sector has also emerged – “carbon tech.” This category encompasses two main types of innovation: carbon removal technology and carbon accounting-related software. Carbon measurement and management platforms are often classified as an ‘enabling’ climate tech sector as they support the success of solutions in the other five emissions categories.
Carbon removal entered the climate innovation spotlight in recent years, especially after the IPCC stated in its 2022 report that “the deployment of CDR to counterbalance hard-to-abate residual emissions is unavoidable if net zero CO2 or GHG emissions are to be achieved.”[1] Common technology types include Direct Air Capture (DAC), Biochar, Soil Carbon Sequestration, Enhanced Weathering, and Bioenergy with Carbon Capture and Storage (BECCS), some of which are capital intensive and mostly still in the R&D phase without proven commercial success.
Definitions of climate tech constantly evolve as new solutions develop, so understanding the space through the dynamic lens of addressing climate change rather than a rigid vertical is more relevant.
How Big is the Climate Tech Market?
The climate tech market has expanded rapidly in recent years. Silicon Valley Bank estimated that VC investment in climate tech startups totaled $56 billion in 2021 across over 1,600 deals. Despite market downturn in 2022, these numbers decreased only slightly the following year. The popular newsletter Climate Tech VC estimated that climate tech companies raised over $40 billion across 1,000 venture and growth deals in 2022.[1] PwC’s 2022 State of Climate Tech report found that investments in climate technology represented more than 25% of all venture capital deals in 2022.
SVB also estimated that current, global annual financing for the energy transition is $3.5T across both public and private, debt and equity. This would need to increase to $5.6 trillion per year to limit global average temperatures to 1.5 degrees of warming. Breaking this down by type of financing, private equity funding of the energy transition (including venture capital) needs to increase by 21%.
[1] Climate Tech VC has 40,000 readers and was founded in 2020 by Sophie Purdom and Kim Zou.
What is the Difference Between Climate Tech and Clean Tech?
Clean tech generally refers to all technologies mitigating environmental damage of any kind, while climate technology explicitly focuses on addressing climate change. Clean technology can include technologies addressing air pollution, waste generation, and clean water. That said, a lot of overlap still exists between climate tech and clean tech.
Investors also associate clean tech with the large capital inflows primarily to the solar and wind sectors that occurred in the early 2000s. Venture capital started flowing into renewable energy technologies and electric vehicles which at the time had not yet reached the mainstream. This continued for several years until the 2008 burst of the “Green Bubble” that occurred alongside the financial crisis.
The term climate tech grew in popularity beginning around 2019. While climate tech still includes renewable energy and electric vehicle start-ups, since the core technology has already proven itself, new entrants into these markets now must provide a differentiated value add related to either scaling existing solutions or increasing the capacity and efficiency of existing technologies. Climate tech also includes new climate-specific sectors that did not exist during the clean tech investing era, most notably carbon tech.
How Many Climate Tech Startups are There?
Entrepreneurs are creating new climate-focused companies year-round, so it’s challenging to pinpoint an exact number. Pitchbook’s climate tech market map has nearly 2800 companies included globally with ~230 at the seed stage, ~460 financed by early-stage VC, and ~730 financed by later stage VC. Climate Tech VC has a slightly more stringent methodology for defining what constitutes a climate tech company, requiring that a company demonstrate one or more “climate impacts,” fall into one of seven climate verticals, and be venture backed. CTVC counted 1,642 VC-backed climate tech companies since 2020. Their seven verticals include: Food & Land Use (383), Energy (359), Transportation (295), Industry (243), Climate Management (176), Built Environment (109), and Carbon (77).
[1] Climate Tech VC has 40,000 readers and was founded in 2020 by Sophie Purdom and Kim Zou.
Why are Climate Tech Companies Attracting Top Talent?
As inflationary pressures and the global macroenvironment has forced corporations to re-evaluate their staffing needs, thousands of employees have been forced to look for new employment. Promises of purpose and a higher calling toward solving climate change has helped create a large talent pool for climate tech startups. Climate Draft, a coalition of climate-tech companies and venture capitalists, which launched last year to attract more talent to the sector, saw a big spike in interest during the first wave of tech layoffs in November 2022. According to a report by Business Insider, Climate Draft's cofounder and CEO Jonathan Strauss said more than 32,000 visitors came to the site and 3,000 people joined the network. Dozens of similar job boards focused on finding employment at climate tech companies have popped up in recent months like Terra.do, Work on Climate & Climatebase. Highly skilled professionals with R&D, engineering or software development experience have come to realize that their skillset have relevancy to the next crop of climate tech unicorns. Investors like BlackRock also share enthusiasm for the sector as CEO & Chairman of Blackrock believes the next 1,000 unicorns “won’t be a search engine, won’t be a media company, they’ll be businesses developing green hydrogen, green agriculture, green steel and green cement”. The collection of financial capital and human capital coming off the sidelines and into climate tech offers a rare opportunity for those individuals to disrupt the global economy.
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