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Ferrara, the city of "green" heat

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Ferrara, the city of "green" heat

What's Ferrara's green secret? It's underground, where a geothermal basin feeds its district heating system. The result? 87% of the thermal energy distributed in the city is "clean" and we avoid about 22 thousand tonnes of CO 2 emissions.

A treasure is hiding under the soil of Ferrara. Not a chest full of gold coins nor a vault containing hidden works of art. It is a gift that nature gave this city. About two thousand metres under the Casaglia hamlet, there is a geothermal deposit from which water is drawn at around 100 °C. It is one of the world' s largest geothermal sources and a completely clean and renewable source of energy. 

This natural treasure makes Ferrara's district heating one of the most advanced geothermal plants in Europe. This reservoir, in fact, supplies 43% of the thermal energy to a 160 km long network that serves about 25 thousand housing units. Thanks to geothermal energy, combined with the recovery of the heat generated by the Via Diana waste-to-energy plant, 87% of the heat we distribute in Ferrara is "green". This result is confirmed by the recent Carbon Footprint certification validated by SGS, according to which Hera district heating helps the city of Ferrara to save 22 thousand tonnes of CO2 emissions per year. 

The Hera Group, partnered with Enel Green Power in a specially created temporary grouping of companies, has been managing this treasure trove of clean energy since the end of 2019. We began this process in 2017, when we obtained the concession to exploit the geothermal reservoir in the Ferrara subsoil, and we recently completed it by acquiring the Casaglia geothermal power plant. Thanks to this operation, we expect to increase the Ferrara district heating system's use of geothermal energy by a further 23% by 2023, compared to the 2016-2019 average. 

In recent years, our strategy has had a single objective: to boost district heating in the city and create an advantage in both the residential and production markets. For example, under an agreement with the Municipality of Ferrara, customers who convert their systems, installing a district heating controller, already receive an 80% discount on the installation. 

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04/08/2020
Circular Economy
Water Project
Innovation

Wastewater "gets beautiful" with ultrasound treatment

Wastewater "gets beautiful" with ultrasound treatment Wastewater is all the water that, after having been used in domestic, agricultural, and industrial activities, must be treated before being returned to the environment. This water contains a solid part – sludge – which is removed during treatment. But, in addition to giving a new life to wastewater, can we also make the sludge life cycle circular, by reducing the amount to be disposed of? Back in 2017, we started research to answer these questions, and, once again, we decided to invest in new technologies to lighten the impact on the environment and be more virtuous. In November 2019, our efforts became a reality, thanks to the ultrasound sludge hydrolysis system, installed at the Forlì treatment plant. In this system, part of the sludge from the wastewater treatment process is subjected to sound waves. The waves, in contact with the liquid matrix to be treated, biodegrade more volatile solids, increasing biogas production, and reducing the final dry matter in the sludge. All this makes it possible to significantly reduce the volume of sludge to be disposed of and opens up new scenarios for the use of the biogas obtained thanks to the ultrasound system. During 2020 the initial results will be reported and we look forward to sharing the successes of this new adventure with you. 110_150_depurazione.1597408821.jpg no
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04/08/2020
Innovation
Circular Economy

Bus fuel from trash: Hera's pilot project with "START"

Bus fuel from trash: Hera's pilot project with "START" _PG_9554.1555590488.jpg To obtain clean energy to power Ravenna's buses by decomposing waste in landfills. We are not talking about the future, but about what has already come true, thanks to an innovative waste treatment plant in Ravenna. It adds another important element in the effort to reduce environmental impact and optimise waste management. The project is funded by the Emilia-Romagna Regional Administration and the European Commission, and is designed to highlight the advantages of using green natural gas. Which ones? It can contribute to replacing fossil energy sources with renewable energy sources; it can be used in the transport sector by contributing to achieving the 10% share of biofuels; it can provide logistics savings thanks to the extensive Italian natural gas network; and can be integrated with other renewable energy sources. The biomethane is collected from networks inside the landfill, and from there it is channelled into a container where it is "purified" by removing the carbon dioxide and other gases in it. From there, it reaches a tank and is used for refuelling. For now, the biomethane produced by the plant will power the buses of "Start Romagna" (Romagna's public transport company), and the pilot project will last about two years. But this is just the beginning. For the Hera Group, this is the second biomethane production facility, after the one in Sant'Agata Bolognese, which produces green energy by treating mowing, pruning and organic waste from separate waste collection. Landfill in Ravenna no http://ha.gruppohera.it/plants/composting/biometano_project/082.html

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A source of clean energy from sewers and wet waste: Biomethane

An investment of Euro 37 million. A plant that disposes of 100 thousand tonnes of organic waste produced by separate waste collection and another 35 thousand tonnes coming from green waste and pruning material. 
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Biodiesel has been developed also from used food oil

Fuel may also be extracted from vegetable oils. Used domestic vegetable oil (such as frying oil) which is recovered by multiutility services via roadside containers and drop-off points, is transformed into biodiesel, which in turn is used to fuel the vehicles used for urban waste collection.
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Bus fuel from trash: Hera's pilot project with "START"

To obtain clean energy to power Ravenna's buses by decomposing waste in landfills. 
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Data, the key to a smart future

From city to "smart city" thanks to data: with our detection systems we can monitor traffic trends, air quality and consumption of public parks. 
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Dialogue with the urban context for new energy: the Borgo Panigale cogeneration plant

District heating is already in itself a "sustainable" and environment-friendly solution, because it can guarantee better performance than traditional domestic boilers. In addition, the plant located in Borgo Panigale ensures lower emissions into the environment, more reliability and greater availability of energy. The system can heat the equivalent of 8,000 residential units. Currently, the turbines can produce 35,000 MWh of energy per year, almost twice as much as in the past.
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Ferrara, the city of "green" heat

What's Ferrara's green secret? It's underground, where a geothermal basin feeds its district heating system. The result? 87% of the thermal energy distributed in the city is "clean" and we avoid about 22 thousand tonnes of CO 2 emissions.
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Hera and General Electric together for energy recovery

We have installed a turbo expander at the R&M stations of Ducati's factory in Bologna. The goal is to recover electricity from the decompression process of methane gas. 
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Hergo Reti: the smart approach to emergency service and maintenance

More than 130 thousand emergency response reports involving 1,500 employees in 2019. More than 50 thousand emergency response operations in the first six months of 2020, in a local area that includes Emilia-Romagna, Triveneto and Marche.
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Hergoambiente, waste bin speaking

Our 300,000 waste bins are talking. How? Thanks to a "tag" that always tells us where they are, how they are working and if they have been emptied. Find out more about the projects of HergoAmbiente, Hera Group's "smart" system to support waste management services.
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Innovation takes flight and offers a variety of perspectives

Hera Group's drones are alternative and supplemental investigation tools to provide quality services to the areas we serve.
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The consolidated economic results at 31 December 2023 and the 2023 sustainability report were approved by the Board of Directors of the Hera Group on 26 March 2024
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2023 sustainability report

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