General information
Shell is making a substantial investment in constructing a modern and impressive
facility for the central office staff of Exploration and Production: The Shell
International EP Business and Technology Centre. The Rijswijk Shell Campus
offers the space and opportunity to convert the present accommodation into a
modern office complex, meeting the need of this new century. Staff will benefit
from working in pleasant, purpose-built offices, supported by a modern climate
control system, making among others use of environmentally sound climate walls.
This PV Pergola is the first pv system to be realised on a Shell building. SIEP
as the owner of the office building is enthusiastic about the project in general
and the PV project in particular, because the PV Pergola is an important
environmental measure, making at the same time other sustainable building
measures visible to the customers of SIEP but also to other Shell companies. The
architect is enthusiastic about PV because it fits well in the light and
transparent architecture of the refurbished building.
Site information
Rijswijk is a small town (40.000 people) just under the smoke of The Hague, with
principal motorways to The Hague, Rotterdam and Amsterdam. It is close to the
airport of Rotterdam and Amsterdam, and it has a wide choice in national public
transport (and the SIEP Business and Technology Centre is at walking distance
from the railway station. The Plaspoelpolder is an expanding business location
for ambitious new companies. Several major building projects are in progress to
improve the availability of premier office accommodation in the area. In this
challenging environment the redevelopment of the Shell Rijswijk Campus take
place.
The new remodelled complex will provide a bright and attractive "Main
Street" (in the ground plan indicated with the colour purple), running the
full length of the complex. The refurbishment establishes a global home for
Shell's E&P activities. Many visits to the E&P Business and Technology
Centre by partner and host government representatives are foreseen.
The object
The remodelling of the building area (see
ground plan) offers the opportunity to integrate PV in the roof of the
L3-building, the V3-restaurant and in the roof of the (purple) Mainstreet. PV
will also be integrated in the façade of the Mainstreet but this is left out of
consideration in this proposal.
On the roof of the mentioned three buildings,
but mainly on the L3-building a pergola has to be realised in which a
‘technical room’ (for lifts, climate control system etc.) is accommodated. On
top of this pergola a surface of 70 x 13 = 900m2 will be available for PV. Here
the “PV Pergola” will be realised in a roof-integrated construction following
the saw-tooth principle. Between the saw teeth exists a ‘shading’ space with about the same width as the PV panel
size (the artist impression gives a bit a wrong impression!). This space also
handles the drainage of water.
 The
PV Panels will face to the South-east. The tilt angle will be about15 degrees;
in this way the reduction of energy production compared with the optimum
orientation and tilt angle (in the Netherlands: South, 35 degrees) will be as
low as 7%. New and innovative is the integration construction in which it is
possible to merge fluently from a cheep and simple construction on the existing
roof construction with standard PV panels RSM110 to a more sophisticated
construction in which semi-transparent glass/glass laminates can be integrated.
The architect has now the possibility to make a design in which one can look at
these glass/glass panels from the inside of the building. In this way it is
possible to construct an overall cheep construction for PV (roof quality) with
the possibility of having parts with glass covering-over quality, with
transparent modules to be seen from the inside of the building and without
visual impact as seen from the outside. From a market approach point this
innovation is interesting. The market often ask for see-through pv systems as
this is regarded as aesthetically or architecturally interesting. The
disadvantage is that these modules are much more expensive due to the different
materials and due to the different production process. At the same time the
energy production is often less due to the lower density of cells in the
modules. Therefore such a solution is often dismissed in the second phase of the
preparation of a project, leaving an architect and a customer disappointed
behind. Now it is possible to realise the expensive but attractive PV solution
only in those parts of the building skin, where it can be seen from the inside,
and using for the other parts the more rational and cheaper solution, while seen
from the outside it is regarded as only one integration solution.
 The
PV Pergola gives room to about 310 m2 of PV panels following a saw-tooth line-up
and will consist of 216 RSM110 modules and 80 custom-made glass/glass laminates.
The price of a turn-key installed PV system of this size in the roof making use
of standard product and integration methods is anno 2001 more or less the same
as in 2000, about 7 to 9 €/Wp excl. VAT. Larger systems can go a bit lower.
The price per Wp of the 80 glass/glass PV laminates is higher because they are
custom-made (and therefore partly hand-made); they are combined with insulation
glass. The transparency leads to a lower peak power per m2, also leading to a
higher Wp-price. The total costs are already in this demo-project attractive,
but are expected to go down approximately 10%, when the project will be
repeated.
Monitoring of PV production
The project will be monitored following the guidelines of the European
Commission and the constraints by the energy company Eneco. As the project is
the first PV project on a Shell building special attention will be given to the
performance of the PV system. For SIEP it is important to compare the results
with the other PV NORD projects, in order to make it possible to extrapolate the
results to other Shell buildings throughout the world. For that reason
monitoring will be harmonised with the other partners. The Shell Group is
working hard on a more environmental friendly imago, and wants to invest in
environmental sound measures such as PV. Therefore energy production data from
the PV installation will be presented on a display in a public area (in the
Mainstreet).
Additional information on environmental and energy related issues
As the PV Pergola project is not only part of the PV NORD project but also of a
large redevelopment and remodelling programme for the whole Shell Campus in
general and the L3-building and surrounding in particular, many other energy and
environmental measures are taken at the same time. In general this can be
summarised as follows:
-
Efficient use of energy for the construction and the operation of the buildings
following the Building Code or better;
-
The realisation of the so-called Mainstreet-L3, the transparent connection
between the different SIEP buildings, which is supplied with a sophisticated
indoor climate control system.
More specific two solar related issues:
-
The Mainstreet-L3 makes use of climate wall principles, while the partly
covering with PV lowers the heat load and the energy use of the electrical
sunshades;
-
The realisation of one or two other PV systems than the PV Pergola. The other PV
systems will be integrated in the façade and have a total peakpower of 72 kWp,
with an estimated production of about 40 MWh.
Timetable
The remodelling of the area around the L3-building will start in April 2001. The
installation of the PV system will be in fourth quarter of 2002. The total
project will be finished at the end of 2002.
Budget and financing
The total budget for the PV Pergola is approximately 467,605 €. The project is
financed by SIEP B.V. with no other subsidy than from the EU (this PV NORD
application) foreseen: EU-Energie programme 175.474 € SIEP B.V. 292,131 €
Beside the PV Pergola SIEP will invest in one or two PV subsystems integrated in
the façade of the building L3. A cost estimate for these two systems is about
700,000€ for 72 kWp. These PV façades will be financed by Shell, maybe with a
small support from national RD&D programmes.
Partners
The project will be carried within the PV NORD project, co-operating all the PV
NORD partners. The PV Pergola itself will be realised by Shell Solar Energy,
while the installation will subcontracted to a skilled installer.
Contribution to the PV-NORD project
The PV Pergola project will demonstrate how PV can be integrated in
non-residential existing buildings. In large parts of Northern and NW Europe
business area's are now existing for some decennia. In the coming 10 years many
of these area's will be subject to large scale redevelopment programmes. This
offers an unique moment for extra energy/environmental measures such as the
integration of PV. The PV Pergola will contribute to the PV NORD project in
different ways:
-
The most important contribution originates from the common issues dealt with in
the different PV NORD projects. A joint development and a rational dissemination
of results will lead to a synergy which was not possible without PV NORD;
-
Secondly the PV Pergola will be an important pillar to channel lessons learnt
and other results from the successful development of PV in the built-up
environment in the Netherlands to the more Northern countries in the project;
-
Third the sharing of results from other PV NORD projects will improve the
electrical, building and architectural performance of the two façades Shell
will realise in the near future. Shell endorses the new and more rational
approach toward PV in large (non-residential) buildings in general and toward PV
in façades in particular.
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