According to UN models, developing countries need approximately $1.1 trillion by 2025 and $1.8 trillion by 2030 for climate action. This means – it is an opportunity for your thought. You can look into a business model that can liaise with your government and become a supporting partner or register as an NGO so you can receive funds to meet their objectives.
To function as a sole proprietorship, a few excellences are required to manage in the long run, let me explain to you. Then, we can dig up the objectives as in what you can begin to focus.
A. Connect with your stakeholders to make a regular interaction and revisit the purpose of your business.
B. Manage your personal effectiveness by evaluating your time and energy
C. Mobilize through leaders. Teamwork is required even though you work solo, identify potential sub-vendors or suppliers who are ethical by practice.
D. Design a culture for yourself and organize your working rhythm
E. Set a vision and build a strategy to achieve your goals.

This is just one thought that you may look into. Try this and let me know your thoughts.

Thank you,
Emmanuel A