Current work

Most news is now published on ( English), and (Dutch) .

Work is currently executed for:
– IEA Annex 72: lifecycle energy,
– research in EROI for different systems ( also in a project for closed cycle agriculture) , and as
– Fellow of the Technical University Eindhoven, Buildings physics department.

Besides working on a second book, several essays on sustainability related topics, lecturing and as invited speaker for several occasions.


COP22 : CO2 budgets and buildings

The past week I could participate in COP22 during Buildings Day, with a presentation on the consequences of the Paris agreement for the buildings and the building sector. We have a maximum budget of 800 GT CO2 that can be emitted before the 2 degree threshold is passed, and what should the building sector do as fair share ( Around 40 % of CO2 emissions is built environment related) . Verder lezen


project advies: energieneutraal – klimaatneutraal – systeemneutraal – (=circulair)

In een recent project is bovenstaande driedeling in ambities  ontwikkeld en uitgewerkt. Vanwege de  nodige vragen hierover,  is er een korte toelichting geschreven.

toelichting e-k-s neutraal – circulair bouwen okt 2016 rorovers

Geïnteresseerd? : Een lezing of workshop met uw medewerkers met vele voorbeelden en keuzedilemmas , om dit verder toe te lichten of uit te werken voor uw organisatie of onderneming. Meer info:


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