Clean technology finance is entering a phase where large-scale deployment and commercial discipline matter more than growth alone. According to McKinsey, the firm analysed more than 11,000 cleantech companies globally and found that investors now reward sustainable business models over expansion at any cost.
Annual cleantech funding stabilised at US$70bn between 2023 and 2025, nearly four times the pre-2020 average. The key change goes beyond the amount of capital being raised to the way it is structured.
Cleantech finance is moving from speculative venture capital to institutional debt. According to McKinsey, debt now makes up about 25% of post-boom funding, up from 10% in previous periods.
This increase could show that lenders have greater confidence in the maturity of technology. Of the US$80bn in debt deployed since 2015, two-thirds was raised in the past three years.
As technology models mature, financing is moving to support companies ready for large-scale deployment. Regional differences are emerging in how this capital is structured.
