Working on sustainable living

Projects & plans: 10 future-proof building programmes

May 22, 2017

1. A testing ground with ‘Green Tenants’

For the renovation of 60 apartments and 14 houses in the Aireywijk Genderdal neighbourhood of Eindhoven, the housing corporation Woonbedrijf required sustainable innovations. Heijmans won the contract by, among other things, re-using demolition materials, installing a hybrid air heat pump, and fitting a solar power roof system in collaboration with the start-up company AERspire. The project proved that comfort, aesthetics and saving on household bills can be effectively combined.

2. Back to zero

Heijmans recently started the NOM renovation of 38 houses belonging to the TBV Wonen housing corporation in Tilburg. NOM stands for Nul-op-de-Meter (Zero on the meter). Fitting these rental properties with insulation, heat recovery systems and power generation elements such as solar panels creates an energy-neutral balance. For the residents, that means very low energy bills or even none at all.

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3. Ambitions for Culemborg

The Parijsch neighbourhood of Culemborg is a suburb where Heijmans has been active in building and development for some years now. For part of the neighbourhood, we are investigating with the municipality whether houses can be connected to a heating grid or other sustainable energy sources.

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Homes built earlier in Parijsch, Culemborg

4. A solar park on sludge field RWZI

Heijmans is developing a solar park for the Rivierenland Water Board. The water board will use the energy that it generates to make its electricity consumption more sustainable. The solar park will be built on a ‘sludge field’ belonging to the Gorinchem-Oost wastewater treatment (rioolwaterzuivering, RWZI) plant and will be in operation at the end of this year.

The solar park will consist of more than 3,000 solar panels that will generate 750,000 kWh of electricity a year – enough for 250 households. Three quarters of the solar power will be used to make the electricity consumption of the wastewater treatment plant more sustainable. The RWZI Gorinchem-Oost will become entirely energy-neutral. Surplus solar-generated electricity will be supplied to the electricity grid.

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Constructing the solar park is part of the plans drawn up by the Municipality of Gorinchem, Heijmans and the Rivierenland Water Board to make the region more sustainable. Within this framework, Heijmans saw an opportunity to develop this solar park on land that would otherwise remain unused in the years to come.

5. Residual heat from the RWZI wastewater treatment plant


Can the residual heat from a nearby wastewater treatment plant be used for heating a new housing estate? Heijmans is investigating whether this can be done in combination with a heat pump in the neighbourhoods of Zevenhuizen-Zuid in the Zuidplaspolder and in the next new build part of Hoog Dalem in Gorinchem. Part of the electricity needed for this must be supplied by solar panels.

Heijmans is opting for a collective, sustainable electricity supply because the home owner will then have no costs other than standing charges and consumption. For example, he will not need to carry out maintenance or replace the installation.

6. As many solar panels as possible

When developing new owner-occupied homes, it is not always possible to include solar panels in the closing costs. This often means that house buyers do not opt for them because they have other priorities, which is why Heijmans is offering buyers the opportunity to lease them.

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Homes at Groene Oever in Lent

7. Local thermal storage

Heijmans has been maintaining the sustainable energy supply in the new Buurtstede neighbourhood in Veenendaal-Oost for 30 years. Thanks to the energy system, the residents of the 1,241 homes have been saving at least 15% on their electricity bills. In Buurtstede, instead of connecting homes to the national gas grid, it was decided to install a local thermal storage system.

8. Innovative ventilation

For the Woonbedrijf housing corporation, Heijmans is building 105 new sheltered homes for the Den Haagacker residential care complex in Valkenswaard. All the homes will have a hybrid ventilation system based on the so-called Monicair recommendations.

9. Car-sharing

In Rotterdam’s Timmerhuis building, users are sharing electric cars. In order to find a solution to the scarcity of parking space, Heijmans and the client turned to car-sharing. Both residents and civil servants working in the building have access to three electric BMWs and one Mini. Electricity for the cars is supplied by 27 solar panels on the roof of both towers. Software ensures that the electricity that they generate is first used to recharge the cars.


If no cars are charging, the electricity is stored in the batteries of the charging point. When both the cars and the charging point are 100% charged, the surplus electricity is used to power the office’s technical installations.

10. Energy data from Grijpskerke

No net energy consumption for 10 years. That’s what Heijmans and project management agency Marsaki guarantee in the energy performance contract with residents of the ‘Woonecohuizen’ in Grijpskerke. In exchange for their energy data, residents have been guaranteed that, for 10 years, their electricity bills will show 0 kWh electricity consumption.