Kubratovo Wastewater Treatment Methane Capture Carbon Offset

From: $10.00 / year/ tonne

  • Reducing sludge and waste transportation
  • Avoiding diesel fuel usage
  • Repurposing methane emissions for electricity and heat production




The Kubratovo Wastewater Treatment Plant Project is located in Sofia, Bulgaria. It is one of the largest in the Balkans. The aim of the project is to transform the existing low-tech sludge treatment process into a modern advanced treatment process, producing clean, renewable energy from biogas.

The impact of methane gas released in the atmosphere is 20-20% higher than CO2. Waste decomposition from treatment plants naturally decomposes and emits methane into the atmosphere.  To avoid this, methane produced in the Kubratovo wastewater treatment plant is captured in common methane tanks and then supplied to the newly installed CHP gas engines for electricity and heat production, which in turn will substitute both the plant’s electricity purchases from the grid and diesel fuel usage. Excess electricity is then supplied to the grid.

Purchase Type

Monthly Subscription, One-time purchase


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

SKU: 0008 Categories: ,

Contact us

This is not an easy topic. We get it. Please refer to our FAQ section or get in touch if you have questions or wish to learn more. If you are a supplier or project developer in carbon removal or reduction we would also love to hear from you.

© 2022 Azzera, Inc. All rights reserved.

Explore, Assess, Offset, Retire

Are you new to the world of Carbon Offsets? Are you unsure of the true impact that these projects administer? Or afraid of them being mislabeled as ‘greenwashing’? Do you see this as a potential area for impact investments? Join us as we present a window into the world of carbon offsets as we see it.