Assuming small startup = early stage, there will be no/less data culture, no/less scale and less data. Swiggy and Flipkart are scale-ups/unicorns which took years to even find PMF and eventually scale to their current level. Focus on building and growing your data stack steadily.
Now, since you're in a leadership role, the culture drives through you. So if you feel that the culture is deteriorating and/or going sideways, talk to the founders and other leaders to build a culture (including data culture).
Secondly, the industry you're in (green energy) is very different, but promising. You're feeling FOMO since there's a lot of hype around AI. In 2-5 years, 80% of them will fail (just like the dot com boom). Green energy is an industry that will increase (and keep increasing) in demand over years. You're already doing cutting edge work :)
Hope this helps! All the best!