Spain’s startup ecosystem is increasingly defined by companies tackling climate change and enabling environmental, social, and governance (ESG) progress. These startups are blending cutting-edge technology with environmental purpose to help businesses reduce emissions, transition to clean energy, and build sustainable practices into the core of their operations.
Top 10 climate and ESG startups in Spain
Credibl ESG offers an AI-powered platform that helps organizations measure, monitor and report sustainability data. Its tools make complex emissions reporting understandable and actionable for companies of all sizes.
Turning Compliance into Action
A Spanish multinational adopted Credibl’s platform to automate ESG reporting. Previously the company spent weeks compiling data manually. With Credibl, the process now takes days, and insights into Scope 3 emissions have helped shape decisions to reduce supplier impacts.
2. Dcycle
Dcycle provides cloud-based software to help companies centralize environmental, social and governance data and comply with emerging regulations. Its platform uses AI and advanced analytics to simplify sustainability management and carbon tracking.
Scaling ESG Across Borders
After closing a €6 million Series A round, Dcycle expanded into Germany and Italy. A European manufacturer now uses the platform to benchmark emissions in multiple regions and align performance with EU ESG standards, improving transparency and investor confidence.
3. Reforestum (Global climate platform with Spanish operations)
Reforestum connects businesses and individuals with forest conservation and restoration projects. It streamlines climate project procurement, supports carbon offsetting, and increases transparency in carbon credits.
Forest Carbon Credits That Deliver Results
A multinational corporation partnered with Reforestum to offset emissions from logistics operations. Real-time tracking of tree growth and CO₂ capture helped the company improve its net zero reporting and share verified impacts with stakeholders.
4. 4BlueTech
4BlueTech is developing modular carbon capture technology and sustainable fuels from CO₂. The startup’s Capture-to-X plants aim to convert greenhouse gases into valuable products such as e-kerosene, synthetic diesel, and hydrogen alternatives.
Capturing CO₂ and Creating Value
In pilot operations, 4BlueTech’s systems have demonstrated consistent CO₂ capture while producing synthetic fuels that can replace fossil equivalents in industrial applications, opening new paths for decarbonization.
5. SolarMente
SolarMente focuses on making solar installations affordable and accessible through flexible financing options. It helps homes and businesses install photovoltaic panels with flexible payment plans to accelerate clean energy adoption.
Solar Panels Made Simple
Small business owners who struggled with high upfront costs were able to adopt solar technology using SolarMente’s subscription models. One restaurant cut energy costs by nearly half within months while significantly lowering its carbon footprint.
6. Zunder
Zunder builds ultra-fast electric vehicle charging infrastructure across Southern Europe. It is rapidly expanding to meet EV demand and reduce reliance on fossil fuels in transportation.
EV Charging That Keeps Europe Moving
By the end of 2025, Zunder plans more than 4,000 charging points across Spain, Portugal, and France. One logistics firm was able to switch its delivery fleet to EVs credited Zunder stations for making the transition operationally feasible
Kimitec develops biological and natural products that replace chemical pesticides and fertilizers in agriculture. Its innovations aim to reduce environmental harm and promote sustainable farming.
Biotech That Helps Farmers Thrive
A large Andalusian greenhouse adopted Kimitec’s biopesticides and biostimulants. The change improved crop yields while reducing harmful chemical residue, enhancing sustainability and opening new export opportunities
8. Devera
Devera’s AI-powered Life Cycle Assessment platform enables companies to assess product carbon footprints using full cradle-to-grave methodology. It identifies hotspots and suggests improvements for environmental impact across entire supply chains.
Cleaner Supply Chains Through LCA Insights
A Valencian cosmetics company used Devera’s platform to compare several product designs. By identifying hotspots in packaging and transport, it reduced lifecycle emissions by over 20% and improved consumer sustainability claims.
9. iPronics
iPronics develops photonics technologies that use light instead of electricity for data transfer and computing. By improving energy efficiency in computing systems, it contributes to lower energy demand in data centers and AI infrastructure.
Reducing Computing Energy Use With Photonics
A cloud services provider piloted iPronics’ photonic chips and saw significant reductions in energy use per computational task. This has real implications for data centers looking to cut emissions linked to digital growth.
10. Novapedra
Novapedra creates circular economy materials by transforming organic waste such as orange peels and coffee grounds into sustainable bioceramics. These materials reduce the need for high-energy manufacturing processes common in traditional ceramics.
Turning Waste Into Building Materials
Novapedra supplied bioceramic panels made from agricultural waste for a Barcelona building renovation. The project reduced construction emissions and showcased how waste can become a high-value material in sustainable building
Why These Startups Matter
Spain’s climate and ESG startups illustrate a broad and powerful response to environmental challenges. From carbon capture and solar access to sustainable agriculture and energy optimization, these companies are not only reducing emissions but also creating new economic opportunities and reshaping traditional industries. As climate threats intensify, the role of bold innovation in engineering, data, and clean infrastructure becomes essential. Spanish startups at the intersection of technology and sustainability offer a model for how entrepreneurship can generate meaningful environmental impact.