Solar District Heating

Greening rural and urban heating grids

Solar District Heating feeds heat from solar thermal collectors into existing or new district heating grids. Solar district heating solutions were already implemented from small villages up to cities with several hundred thousand inhabitants. Innovative concepts of SOLID include storage and load management, yielding the highest solar fraction and lowest energy rate.

Shutting off the boiler in summer months

With a large scale solar thermal plant and heat storage like in Mürzzuschlag, there is no need for low load summer time operation of large boilers

Solar district heating is the major opportunity to increase the overall renewable heat supply and energy efficiency in urban and rural areas. It reduces carbon emissions and air pollution.

„Traditional“ Solar District Heating works with diurnal heat storages and delivers heat mainly in summer months and shoulder seasons.

Innovative BigSolar solutions from SOLID work with seasonal storages and deliver heat to the grid and the customers all year round, see here.

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„Being a utility, sustainable and secure heat supply is very important for us. In SOLID we found an enthusiastic partner with the right know-how with whom we could implement our project according to our desires.“

Reinhard Welser & Hubert Neureuter
CEOs of utility
Stadtwerke Mürzzuschlag

What is Solar District Heating (SDH)?

What is Solar District Heating (SDH)?

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SDH is the most cost-effective path to cleaner air

SDH is the most cost-effective path to cleaner air

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Smart Cities use solar heat

Smart Cities use solar heat

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Success Stories

SOLID installed solar cooling energy systems around the globe. Here is a list of similar projects. Or you can click here to get back to our Success Story Overview.

Success Stories

Housing Estate Berliner Ring

At the time of construction, Berliner Ring was the biggest solar plant in Austria.

SOLID Products

Solar Hot Water & Heating
Solar District Heating

Liggeringen

Previously heated by expensive fuel oil, the houses of Liggeringen now benefit from clean heat ...

SOLID Products

Solar District Heating

Mürzzuschlag

In Mürzzuschlag is Austria’s second largest solar thermal system

SOLID Products

Solar District Heating

Franziskus Hospital Harderberg

The perfect energy mix for hospitals: The solar thermal plant supports the energy supply of domestic hot water system, heating system, air-conditioning system (via absorption...

SOLID Products

Solar Cooling
Solar Hot Water & Heating
Solar District Heating

Water Works Andritz

In 2009 another large solar system was installed in Graz to feed into the district heating network. The system was installed at the grounds of the water supply utility. Besid...

SOLID Products

Solar Hot Water & Heating
Solar District Heating

Stadium Liebenau

On the roof of the skating hall of the Stadium in Graz Liebenau, a solar thermal system with 1407 m² collector surface was built on an ESCo basis. This system feeds the gener...

SOLID Products

Solar District Heating

Eibiswald District Heating

High-efficiency performance of district heating grids via solar thermal: A solar thermal plant combined with heat storage can increase the overall energy efficiency of th...

SOLID Products

Solar District Heating

Vransko District Heating
The first of its kind solar district heating system in Slovenia feeds in the district heating network of Vransko, a a community of 800 inhabitants in the north of the country...
SOLID Products
Solar District Heating

District Heating Central, Graz

District Heating Central, Graz
The world's largest field test for solar thermal collectors - this solar district heating plant was constructed for both, research and economic operation
SOLID Products
Solar District Heating