A new tool for calculating energy saving benefits of screens

The Swedish Solar Shading Organization and the Swedish company EQUA developed a new shading calculation software: ESBO. ESBO offers radically improved functionality compared to earlier tools like Capsol. Helioscreen has participated to ESBO by making the data for our most popular screen fabrics available. 

What is ESBO?

ESBO, the Swedish Early Stage Building Optimization tool allows you to compute the critical energy and power saving benefits of solar shading. You can download it for free or pay for a full version.

All necessary parameters can be put in:

-          Glazing data

-          Solar shading data

-          Climate data

-          Environmental data

-          Customer requested data

The simple room wizard for basic calculations

With the simple room wizard you can select some very basic parameters to start off the further work or make simple simulations. It allows a single-day cooling load study for a rectangular room with a single window.

You can also easily compute the (ISO 15099) standardized performance of the window and shading combination (g-tot).

You can find a case study we made here.

Or you can ask us for a simulation by sending an e-mail to marketing@helioscreen.com.

How does the wizard work?

Let's see how you can make a simple calculation with Sergé for The Netherlands:

Once you have downloaded ESBO, you will see an icon on your desktop. Double click it to open the program.

 ESBO icon

 A starting screen appears:

 Starting screen ESBO

 Below "Start" click on "New office room (simple room)"

 The user interface will appear:

 ESBO user interface


First select your location: if you want a location outside Sweden, choose "download":

Download location


Choose your location from the list of countries and cities:

Choose location from list


ESBO will ask you if you want to download the climate file: click yes, then OK:

Confirm download

OK download

Close the download window

On the top right side of the interface you can choose for which case you want to make a calculation: the cooling load, the overheating or the heating load (in winter). In this example we will calculate the cooling load in summer:

Sizing case

For the zone and materials (floors and walls) you can choose the standard construction, but also a light, medium or heavy envelope:

Zone and materials

To see what each type of envelope consists of you can click on the link Envelope in the wizard:

 Light Envelope

Heavy Envelope

Standard construction

Next you can select the parameters for the window and the shading. You can make the window smaller or larger by adjusting the m2 or leave it at the default value:

Window area

Select the shading type

Select shading type


Next you can select the shading material. To find Sergé go to the hyperlink Shading:

Hyperlink shading

A pop-up window will open:

pop-up exterior screen


Click on the arrow next to "Generic screen shade material" and select load from database:

Load screen from database

A list of materials will appear. Scroll through it, to find Sergé and other Helioscreen fabrics;

Then click on the fabric of your choice:

Choose Serge from database

Click to select and then click on OK.

Confirm Sergé

Now click on OK in the pop-up:

OK Sergé for exterior


Next you can select the glazing type. You can choose the glazing types A, B, C and D from the norm EN14501. Most used as a standard glazing type for calculation is glazing C.

Select glazing type


You can already calculate the g value for the system by clicking this button:

g for system

The result is displayed like this and can be saved or copied:

Result g for system


 Next you can select the orientation of the window:

Orientation window

Click on the drop-down button to show the possibilities.

Next you can adjust thermal loads and operation or leave those at the default values.

Thermal loads and operation

Click Start Simulation

Start simulation


A pop-up window will appear showing the progress of the calculation. Then the final report will show:

Simulation report

The graph will show the temperature in and outside the room on the hottest day of the year for your location

Temperature graph

 You will also see the cooling energy needed on the hottest day of the year for your location:

Zone cooling power

And a summary of the window performance on that same day:

Window performance

 You can also make a more detailed calculation by clicking "Give more input data"

More input data

To compare several scenario's (with and without shading, with and without cooling etc.) you have to start a new simulation (unless you purchase the full version of ESBO).

If you would like to make more detailed calculations and reports we advise you to download the full manual for ESBO.