Study “Development and Commoditization of the Pre-fabricated Modular Bamboo Housing in Asia and Africa”, Tjerk Reijenga, ICBR Beijing 2009.

EAEF Europeaid/119920/C/SV-2004-84 ‘Increasing market awareness for BIPV in Malasia.’

UNDP Study ‘Integration of Solar Heating into Residential Buildings, China’, (UN RPFS519) 2003-04

Feasibility study ‘Sustainable Technical College’ (20,000 m2) at Delft University of Technology, DWA Bodegraven, BEAR Architecten 2003

Feasibility study ‘Urban plan Kwintsheul-Noord Optimization of PV systems’, BEAR Architecten, NOVEM, Gouda/Utrecht 2001.

Universol NNE5/2001/293 ‘Grid-connected PV Systems Integrated and Educational and CulturalL Facilities’

Resurgence NNE5/2001/340 ‘Renewable Energy Systems for Urban Regeneration in Cities of Europe’

Renovation office/laboratorium with PV-system (EU- Thermie SE 115/97 NL/DK) at the Netherlands Energy Research Center (ECN) in Petten 1998-2000.

Study “Sustainable Building for Elementary education”, Tjerk Reijenga, BEAR Architecten, Milieudienst Amsterdam, Gouda 2000.

22 sustainable houses with PV systems and heat pump (EU-Thermie SE 102/95 NL/DE) Dordrecht 1996.

Preliminary study PV-modules in glassroofs and -facades – drs. W.O.J. Böttger, drs. L.E. de Graaf, drs. M. van Schalkwijk, ir. A.J.N. Schoen, ir. T.H. Reijenga, ir. P. Blesgraaf, Ecofys E 263, NOVEM, Utrecht, 1996.

Environmental Education Centre with thermal solar, passive solar and PV system (EU-Thermie SE 104/93 N) ‘De Kleine Aarde’ Boxtel 1995.

Retrofit of roofs with PV-modules – ir. T.H. Reijenga, BEAR Architecten, NOVEM, Gouda, 1994.

Toolbox Sustainable Building for Apartments – Bouw en Woningdienst Amsterdam – ir. E. Hasselaar, ir. T.H. Reijenga, Amsterdam, 1993.

Integration of PV in the build environment – ir. A.J.N. Schoen, drs. T.C.J. van der Weiden, ir. T.H. Reijenga, H. Lieverse, Ecofys E 232 – NOVEM, Utrecht, 1992.

Feasibility study integrated solarcollectors – ir. E. Hasselaar, ir. T.H. Reijenga, drs. C. van der Leun (Ecofys), Gouda, Utrecht, 1991.

EU-demonstration project passive solar energy ‘50 houses with conservatories in Spijkenisse 1990.

Feasibility study Ecological Settlement in Utrecht, ir. T.H. Reijenga, BEAR Architecten, Gouda 1990.

Ecological gardens – Hans Claessens, Tjerk Reijenga, Gouda, 1990.

Preliminary study sustainable building Ecodus location Delft, ir. Chiel Boonstra, ir. Tjerk Reijenga, Woon|Energie Gouda 1989.

Ecological maintenance Romolenpolder Haarlem – ir. Tjerk Reijenga, ir. Jaap Laan, ir. Sybrand Tjallingii, Hans Claessens AvB, ir.Sjoerd Andela, BEAR Architecten, Gouda, 1989.

Environmental issues of building materials – ir. David Annink, ir. T.H. Reijenga, Woon|Energie, Dienst Volkshuisvesting Amsterdam, 1989.

D.I.Y. solar panels – Frits Prins, Tjerk Reijenga, Amsterdam, Gouda, 1988.

EU-demonstration project energy efficiency “Apartment renovation with climatic facades” in Tilburg 1986 (EC-demonstration project EE 85-299).

Ecological Building – Tjerk Reijenga, Gouda, 1986.

EU-demonstration project energy efficiency “Bio-climatic Houses” in Goirle 1984 (EC-demonstration project SE 84-389)