Clean Growth Fund started with joint backing from the UK government and CCLA to help close a gap in early-stage cleantech funding, and it combines investment expertise from Northstar Ventures with hands-on technical support from Carbon Limiting Technologies to help portfolio companies grow. It focuses on system-level problems, like linking power, heat, and transport, and backs companies that cut greenhouse gas emissions and use resources more efficiently, growing from a £101m fund into raising a second, larger fund for UK climate technology.