c/o Loveren 6, 5563 AD Westerhoven, Netherlands    
M: +31 6 2787 9118 or +44 74 5238 3664

Advisory Services on Climate, Energy and Development Issues

Welcome to my website!

ASCENDIS is an independent office, founded in 2004 by Ir. Jan VAN DEN AKKER, providing consultancy services on sustainable energy and climate change in a development context.

ASCENDIS  offers services in Africa, Europe neighbourhood, Asia & Pacific and Latin America & Caribbean from offices in Netherlands and in Lima, Peru, to international development agencies and their local partners.
What can ASCENDIS do for you?


I am a technology management scientist with a Master's degree from Eindhoven University of Technology (Netherlands) and have been working for almost 25 years in the area of clean technology, energy efficiency, renewable energy, energy access and climate change. I am fluent in English and Spanish with working knowledge of French.

In the nineties, I worked for for Dutch consulting offices and as programme and advisor for a number of UN organizations. As independent consultant I have provided services to UNDP, UNEP, UNIDO and NGOs and consulting firms (e.g. Practical Action, Winrock, MottMcDonald, GFA, NTU) in projects funded by these organisations, GEF, bilateral donors and the EU.

I have carried out assignments in over 55 developing and emergent economies
Focus areas

ASCENDIS provides strategic and practical advice on sustainable energy, striving after an intergral approach to energy, environment and development issues and options.


Publication: Overview of costs of sustainable  technologies. Energy production: on-grid, mini-grid and off-grid power generation and supply and heat applications (2017)
Country background: Rural and renewable energy in Myanmar (2019) ; South Africa: 1. energy efficiency, and 2. wind energy (2019)
Case studies: CDI Thailand wind power development (2018)
CDI Geothermal energy Kenya (2018)
Malawi clean rural energy and mini-grids (2019; draft only)
Experience V.D. AKKER
Peru selva Peru Uros Gambia woodfuels Nicaragua hydro Nicaragua - PUE India Tamil nadu Cambodia battery charging Peru Cusco night Afghanistan - hydro Lesotho PV Guyana PV Guyana - PUE Samoa - transport India - biomethanation Peru Lima traffic Egypt electric bus