Decarbonisation and Circularity
From theory to real business cases in a good company of fellow professionals.

You don’t need another course.
You don’t need another qualification.
You don’t need to be convinced this work matters.
Ongoing, practical support and discussion to make defensible decisions in real-world constraints.

This community is to help you:

  • Translate concepts into practical implementation
  • Learn from real cases, real constraints, and real decisions
  • Get direct feedback so you’re not working alone 
  • Build confidence and credibility through doing, not just studying
This community is run by
  • Julia Mariasova
    Udemy Instructor Partner specialising in climate and sustainability. Helped 20,000+ students through her educational courses.

    LinkedIn
  • Oksana Zheleznova
    Business development and marketing expert specialising in sustainability and carbon markets
    LinkedIn
Some reviews on Julia's Udemy courses
“This course is perfect for leaders and professionals aiming to develop and justify sustainability strategies within their organizations. It covers essential topics like CSR, TBL, ROI, and ESG, offering practical tools to make a compelling case for sustainability initiatives. Highly recommended for those looking to integrate sustainability into their business strategies effectively.”
- Safi
“I really enjoyed the course. After a few courses on ESG which were very theoretical, finally a course with a practical approach. I eventually got a lot of insights and useful links to resources in order to set up a real ESG system. I appreciated the tests and the assignments, which helped me a lot to understand the topics.”
- Paolo
“This decarbonization course is well-structured and stands out for its focus on practical, real-world applications and insights that are often hard to find elsewhere. This makes it a truly valuable learning experience.”
- Deepak
“I have to say, this is one of the most genuinely satisfying learning experiences I’ve had in a long time. The content is outstanding. Every topic was covered with real clarity: climate change, renewables, carbon capture (CCUS), grid flexibility, energy storage, hydrogen, bioenergy, demand-side management, even nuclear and critical minerals for the energy transition. Nothing felt superficial.
The narration and flow were excellent — complex ideas like power sector decarbonisation, emerging business models, and long-duration storage were explained in a way that is easy to follow but still technically meaningful for industry professionals.”
- Purnendu
“This is one of the best digital, self-based courses I have ever taken in my career. I like how the learning experience clarified climate change terminology, described the root causes and origination of the problem, and walked us through a wide range of case studies.”
- Anupam Samanta
“The course provides a great overview of key regulations for GHG reporting and dives into carbon accounting concepts, data requirements, and calculation methods. If you find this topic complex, this course explains it in an easy way.

Mainly focusing on the Greenhouse Gas Protocol, the course also discusses criticisms and the E-Liability accounting method proposed by Harvard and Oxford academics.

If you're a procurement professional (but not only) interested in sustainability, give it a try!”
- Lucian
You’re in the right place, if any of this sounds familiar:


You know what decarbonisation or circularity is — but struggle with what to do next or how 

You’re trying to apply good ideas in contexts with limited resources or buy-in

You keep learning, but progress feels slow, fragmented, or hard to defend

You don’t have a safe place to discuss your ideas and brainstorm solutions for your business
Everything you need to close the gap between knowing and doing
Inside our community, you'll get:
  • A dedicated Ask-a-Question space for real, applied problems
  • Regular Group Calls and Goal Sharing
  • Hot Seats & Member Spotlights for deep, focused feedback
  • Guest Expert Workshops & Panels with practitioners, not theorists
  • A growing Video Replay Library of applied discussions and work
  • Informal Social Chat for members connection and exchange
Are you ready to level up inside?
Our membership has everything you need to achieve confidence, credibility, or traction in your work. We can’t wait to support you!
  • Ask-a-Question Space

    A dedicated place to bring specific, real problems you’re facing:


    ✔ real dilemmas

    ✔ prioritisation questions

    ✔ draft ideas

    ✔ “Is this a bad idea?” moments


    You get input from peers facing similar constraints — not abstract answers.

  • Group Calls and Goals Sharing

    Live, facilitated sessions focused on discussion, application, and shared learning:


    ✔ Member introductions: What they’re working on, What progress looks like for them, Where they’re stuck

    ✔ Real problems brought by members

    ✔ Collective sense-making

    ✔ Open Q&A

    ✔ Exploration of how tools and standards are actually used


    These are working and social sessions, not lectures.

  • Guest Expert Workshops & Panels

    Practitioners and experts share how decarbonisation and circularity work in practice across sectors. Topics may include:


    ✔ Case studies and implementation realities

    ✔ Career paths and market insights

    ✔ Persuasion and organisational buy-in


    Always grounded, never purely theoretical.

  • Hot Seats & Member Spotlights

    Focused sessions where one member presents a challenge, idea, or project — and gets collective feedback. Ideal for:


    ✔ Knowledge/experience sharing

    ✔ Lessons learned from real attempts — including what didn’t work

    ✔ Practical insights you won’t find in polished case studies

    ✔ Validating an approach, presenting a challenge, project, or decision

    ✔ Improving clarity before presenting to others

    ✔ Gaining confidence through peer review and feedback


    This is one of the strongest confidence- and credibility-builders in the community.

  • Video Replay Library

    All sessions are recorded and organised so you can:


    ✔ Learn at your own pace

    ✔ Revisit complex topics

    ✔ Catch up without falling behind


    Perfect for busy professionals and career shifters alike.

  • Social Chat

    Not everything needs to be formal.

    The social space allows us to stay connected.


    ✔ Quick exchanges

    ✔ Sharing articles, tools, or ideas

    ✔ Informal peer support

    ✔ Job leads

    ✔ Collaboration opportunities

    ✔ Projects, pilots, and partnerships

    ✔ Live events


    It’s where community trust and momentum build over time.

Join the Membership
Decarbonisation and Circularity Community

$19 per month
Get your assess
🤔 You might be wondering…

Is this a place to sell more courses?

No, this isn’t it. This is a place for ongoing support, peer support and applied learning.

Who is this community for?

This community is for anyone who:

  • already works in or alongside decarbonisation, circularity, or sustainability
  • wants help applying knowledge in real contexts
  • wants to share practical challenges, knowledge, experience
  • values feedback and peer-to-peer support in a safe environment
  • prefers practice over theory
We have already brought sustainability experts to our courses. Now we can bring more experts to speak live in our community.
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