Solar CITIES

06/05/2026

Congratulations to all the finalists with a special shout out to Dominic Kahumbu Wanjihia and Flexi-Biogas! Well done!

Keep on innoventing!

We look forward to revealing the winners on 8 July 2026, live at the Vox, Birmingham, United Kingdom

06/02/2026

We’re excited to share that the Solar C³ITIES Solutions team will be attending Penn State Extension’s upcoming conference on anaerobic digestion and farm-based biogas systems!
If you’ll be attending, please stop by our table display and say hello. We’ll be sharing information about:
• Home-scale and community-scale biodigesters
• Hands-on educational workshops
• DIY biodigester construction resources
• Our book: How to Build a Solar CITIES IBC Tank Biodigester
• Sustainable waste-to-energy education initiatives
• Opportunities for collaboration, sponsorship, and board involvement
Whether you are a farmer, educator, student, sustainability professional, policymaker, nonprofit leader, or simply curious about practical biogas solutions, we would love to connect with you.
At Solar C³ITIES Solutions, we believe small-scale systems can make a big impact by turning organic waste into renewable cooking fuel and nutrient-rich fertilizer while educating and empowering communities.
Come meet our team, see our display, and learn more about how simple, affordable biodigester systems can help build a more sustainable future.
We look forward to seeing you there!
Learn more: https://SolarCITIES.SolutionsCITIES
Conference information: https://extension.psu.edu/anaerobic-digestion-on-the-farm

This multi-day national conference explores on-farm biogas systems through research, policy, and practice, featuring expert presentations, discussions, and tours focused on anaerobic digestion.

05/10/2026

To all the mothering souls…

05/10/2026

Celebrating innovation in action!

Dr. Thomas Henry Culhane, professor and director of the Climate Mitigation and Adaptation concentration at the Patel College of Global Sustainability, has been recognized with the USF Award for Innovation in Online Design and Teaching.

His work goes beyond the classroom—transforming how sustainability is taught by making science engaging, accessible, and yes… fun.

As President Moez Limayem shared during the ceremony, it’s this kind of innovation that strengthens our entire university community.

Congratulations, Dr. Culhane, on this well-deserved recognition and for continuing to inspire the next generation of sustainability leaders. 🌍💚

05/05/2026

04/16/2026

A simple idea — but one with powerful impact.

Recently, The Nairobian (THE STANDARD NEWSPAPER) featured our Pay-As-You-Cook biogas model at Dunga Beach in Kisumu — a solution designed for fish traders, hotels, and small food businesses.

Instead of relying on expensive and traditional fuels, users can now access clean cooking energy and simply pay for what they use.

As our CEO Dominic Wanjihia puts it:
“It works just like airtime — you pay for what you use, and it’s much cheaper and cleaner than traditional fuels.”

This model is not just about energy — it’s about:
• Affordable access to clean cooking
• Supporting small businesses
• Reducing environmental impact
• Building a circular economy around waste

It’s encouraging to see local innovation gaining recognition and showing what practical, scalable solutions can look like.

📖 Read the full article here:
https://www.standardmedia.co.ke/nyanza/article/2001545060/pay-as-you-cook-the-biogas-idea-fuelling-trade-in-kisumu