Frequently asked questions

Matthias Gelber is a German-born ESG and sustainability speaker and trainer, now mainly based in the Philippines. He was voted "Greenest Person on the Planet" in 2008, has given talks in 42 countries, and received the FAMAS Prestige Excellence Award in Global Environmental Sustainability in March 2026.

ESG strategy, decarbonisation, the business case for ESG (how sustainability cuts costs and wins sales), circular economy, green buildings and low-carbon materials, employee wellness, and the behaviour change that net-zero targets need.

Corporates, start-ups and entrepreneurs, schools and universities, hotels, hospitals, governments, and webinar audiences. He has worked with organisations in healthcare, manufacturing, construction, energy, tourism and finance.

Send the event date, city (or "virtual"), audience size and the topic you have in mind. Use the contact form, email matthiasgelber@gmail.com or WhatsApp +60 16 263 3828. Matthias replies with his availability and a fee for your format.

A 1-hour keynote or talk, conference chairing and panel moderation, a full-day workshop (8:00 am to 12:00 pm and 2:00 pm to 5:00 pm), and the four-day Certified ESG Innovator (CESGI) training.

Yes. Before each booking Matthias holds a short scoping call, then rebuilds the examples, numbers and exercises around your sector, your audience and what the session has to achieve.

Two to three months ahead gives the best chance of getting your date. Shorter notice is sometimes possible, so ask anyway.

The fee depends on the format, the length of the session and the location, so Matthias quotes for each event. For international events the organiser normally covers travel and accommodation.

Bookings that start with a bureau stay with that bureau. If your client contacts Matthias directly, he sends them back to you.

Yes. He has spoken in 42 countries and works across Asia, the Middle East and Europe. He adapts each talk to the local environmental, cultural and regulatory context.

Yes. He gives virtual keynotes, webinars and online workshops, which suit global audiences and tight budgets.

English and German. For other languages, the organiser can arrange professional interpreters.

A four-day certification that Matthias runs with iTrain Malaysia. It covers ESG frameworks, net-zero strategies, innovation and leadership. Participants who pass the exam receive a certificate and a Credly digital badge. The next intake is 16 to 19 November 2026 (physical), and it is HRD-CORP claimable for Malaysian employees. Register at https://itrain.com.my/certified-esg-innovator/.

Yes. Matthias runs CESGI and his workshops in-house as well as in public intakes. Send your team size and preferred dates through the contact form.

Go to the Book page, enter your name, email address and mobile number, and the download of "The Greenman's Guide to Green Living & Working" starts straight away.