ETG provides independent advice on the development, financing and operation of sustainable energy projects in the built environment and industry. See some of our projects below.

Pijnacker, Zuid-Holland

VV Oliveo with 290 solar panels on their way to a fully sustainable energy supply

ETG is carrying out a program for the KNVB to analyze the current energy use of soccer clubs and to provide roadmaps for a gas-free and energy neutral operation in the long term.

For VV Oliveo from Pijnacker, ETG has carried out an ‘energy scan’ and developed two alternative ‘roadmaps’ to beome 100% sustainable, while realizing significant savings on the energy costs.

ETG also supported the first step of the implementation plan, under which 290 solar panels will be placed on the ‘sporthal’. The installation will supply 110,000 kWh/year of electricity. This not only covers the current electricity consumption, but also the additional electricity consumption of electric heat pumps when installed at a later stage.

Leek, Groningen

The ‘KleinsteSoepFabriek’ on the way to a sustainable operation with solar collectors and heat recovery

The KleinsteSoepFabriek (KSF) from Leek makes soup the way you make it at home, but in a larger soup kettle: with real organic ingredients, powerful herbs and spices. Without E numbers or unnatural seasonings.

KSF already has solar panels on the roof, but now also wants to make the production process more sustainable by using solar collectors and by recovering heat from the production process. In collaboration with Aqua-Area-Water-Systems, ETG carries out an analysis of the current energy system and the options to achieve radical savings on the use of natural gas.

Delft, Zuid-Holland

Feasibility analysis of a large-scale solar roof system with the RABLE mounting system

RABLE produces a self-supporting, ballast-free mounting system for solar panels. This innovative solution makes it possible to install solar panels on all flat roofs, even when the roof construction is very weak. Almost 50% of the roof surfaces in the Netherlands are considered “unsuitable” for solar energy due to structural limitations. This solution can therefore make a major contribution to the energy transition..

ETG is a partner in the RABLE pilot project to test the prototype self-supporting mounting system for solar panels in practice. This pilot is being carried out with a subsidy from RVO under the DEI+ scheme. ETG is investigating the feasibility of installing a large-scale PV installation with the RABLE mounting system on the buildings of the former NKF factory on the Schieweg in Delft.

Haarlem, Noord-Holland

Establishment of regional project office and umbrella energy cooperative Kennemer Energie

ETG partner Guus Jansen is co-founder of Stichting Kennemer Energie and Coöperatie Kennemer Energie (now Kennemer Kracht) and has held various board positions in both organisations. Prior to this, ETG developed the business plan for a large-scale roll-out of collectively financed solar roofs in the Kennemerland region.

ETG supplies the LEAP-PV Feasibility Analysis software to Kennemer Energie, used to design and evaluate new solar energy projects, both technically and economically.

DRIFT instituut Erasmus Universiteit, Rotterdam

Masterclasses Acceleration of the Energy Transition

The DRIFT institute (Dutch Research Institute For Transitions) was founded in 2004 under the umbrella of the Erasmus University in Rotterdam.

DRIFT investigates how sustainability transitions are influenced and accelerated and organizes master classes in which the major social transition processes are discussed with policymakers and ‘frontrunners’ in the field.

On behalf of ETG, Guus Jansen has given several lectures as a guest speaker on the ‘Acceleration of the Energy Transition’.

Haarzuilens, Utrecht

Development of solar power roofs for energy cooperative Haarse Zon

Energy cooperative Haarse Zon from Haarzuilens wants to fully meet its own electricity needs with the sustainable energy generated in and around the village. 1588 solar panels have now been installed on three buildings on Thematerweg, covering approximately 75% of the electricity requirement.

ETG supervised the establishment of EC Haarse Zon; the business cases have been drawn up for the various roofs based on the postcode rose scheme; carried out the project management for the realization of the solar roofs and supported the meetings with the residents as an ‘outside expert’.

Woerden, Utrecht

Roadmap for the energy transition of business park De Putkop

Commissioned by the municipality of Woerden, ETG has drawn up a roadmap for the energy transition of business park De Putkop. To clarify the starting point, an inventory was made of all buildings and the energy consumption and per building. Additional estimates were made where consumption data were lacking. Under an ‘All Electric’ scenario, the business park can be made energy neutral on an annual basis. With additional measures, the Putkop can also become energy-neutral on a daily basis.

To link theory to practice, two additional programs have been implemented. Under the first programme, an energy scan was carried out for thirteen companies, to determine their energy performance and provide advice on possible energy saving measures. Informal energy advice has been given for seven other locations. Under the second programme, the possibilities for establishing roof based solar power installations for 21 companies (at 25 locations).

Eindhoven, Brabant

Business case and TRL assessment for TNO/Solliance for the production of tailor-made thin-film, flexible solar panels

Building Integrated Photovoltaic (BIPV) offers a more aesthetic appearance than conventional Building Applied PV (BAPV) solutions, but the cost level is still too high for widespread application. A prototype developed by TNO/Solliance for the production of tailor-made thin-film PV elements can change this.

The technical and economic feasibility of this new production technology has been investigated. The various market segments were mapped out and used to establish a phased go-to-market strategy. The business case for the operational development and market launch has been developed to prepare for the production of an investment memorandum.

Haarlem, Noord-Holland

High Level Business Case Energy Cooperative DE Ramplaan

For the municipality of Haarlem, ETG has carried out an integral and quantitative study into the technical and financial feasibility of the transition to a sustainable and fully self-sufficient energy system for the Ramplaan quarter in Haarlem. The possible adjustments to the homes (insulation, low-temperature space heating, heat pump in combination with a closed ATES, solar PV & solar boiler) and possible design of a central district infrastructure (solar PV, wind turbine(s), horticultural greenhouses, biomass and energy recovery from waste and sewage flows by means of high-pressure anaerobic biodigestion and thermal/catalytic cracking) have been evaluated jointly, both technically and economically.

Two main scenarios have been evaluated in detail. In the ‘All electric’ scenario, the total energy demand, including space heating and hot tap water, is met by electricity, which is sustainably generated in the region. In the ‘Maximum sustainability’ scenario, both electricity and heat are generated sustainably in the neighbourhood. This study is a first step on the route to a sustainable, local energy supply in the region. It provides recommendations for the next steps and recommendations for each technology to assure security of supply and manage implementation risks.