1. Tesla: Known for its electric vehicles and renewable energy solutions, Tesla is leading the way in sustainable transportation and energy storage.
2. Apple: With commitments to using renewable energy and reducing carbon emissions, Apple focuses on sustainable product design and recycling initiatives.
3. Google: Google has made significant investments in renewable energy projects, while also promoting energy efficiency and carbon neutrality across its operations.
4. Microsoft: Microsoft has pledged to be carbon negative by 2030 and is working towards sustainable practices in its data centers and operations.
5. Amazon: Through initiatives like “The Climate Pledge,” Amazon aims to be net-zero carbon by 2040 and relies on renewable energy to power its data centers and logistics operations.
6. IBM: IBM is focused on developing innovative solutions for sustainable cities, agriculture, and energy, incorporating technologies like AI and IoT.
7. Intel: Intel is committed to reducing its environmental impact by focusing on energy efficiency, waste reduction, and sustainable water management.
8. HP Inc.: HP has set ambitious goals for sustainable operations, including recycling programs and reducing greenhouse gas emissions across its supply chain.
9. Schneider Electric: Schneider Electric specializes in energy management and automation, providing sustainable solutions for buildings, data centers, and industries.
10. Siemens: Siemens focuses on sustainability through its energy-efficient products, smart infrastructure, and renewable energy projects, aiming for carbon neutrality by 2030.

Note that this list is not exhaustive and there are many other tech companies working towards sustainability as well.