Powering
sustainability

We help communities and companies to reduce CO2 emissions with clean energy.
Summa Energy designs and delivers large-scale renewable energy solutions, including photovoltaic , clean heat and energy storage solutions to utilities, industrial customers and buildings and properties.

Read more about what we do and our contribution to the global fight against climate change.

Total installed capacity

78

MW

AvErage yearly energy production

89900

MWh/Y

co2 emissions eliminated total

19840

tons CO2 avoided

savosolar-who-we-are

Who are we

Summa Energy is a leading provider of large-scale clean energy solutions, for both renewable electricity and heat systems, including photovoltaic, solar thermal, energy storage and smart control technologies. Our international team has extensive know-how and experience in renewable energy for utilities and industrial processes. Our headquarters and heritage are in Finland, and we act globally to ensure the success of our customers, wherever they may be located.

Our References

Jelling Varmeværk

Jelling Varmeværk is a Danish district heating plant in the historical village of Jelling, which is the former home of the Viking Chief Harald Bluetooth. Apart from the 20,125 m² collector field, Jelling Varmeværk produces its energy from a 1 MW wood chip boiler, a 1.5 MW absorption heat pump and 2 gas CHP engines with a total capacity of 8 MW heat and 6 MW electricity.

The first solar system was commissioned in summer 2016 and during its first week of operation, the collector field set a new Danish record by producing nearly 5 kWh/m² in a day.

The collector field in Jelling has double stanchions which allows for two collector rows to connect to one and the same pipe and thereby save costs and thermal losses. The annual solar thermal production is about 11,200 MWh, which covers over 25% of the town’s energy need for heating.

In 2018, Jelling Varmeværk placed a second order with Savosolar for the 4,836 m² extension of the successfully running existing collector field. The extension will be installed in first half of 2019 and it will further grow the fraction of district heating produced with solar energy.

“We chose Savosolar as our collector supplier due to their high efficiency in combination with their innovative solutions. They enable us to have an environmentally friendly, stable and low price for heating over the next 20 years. Collectors have integrated hose connections which means that they disturb the landscape as little as possible in an historic village of Jelling. The collectors can also follow the curvature of the landscape which means that we didn’t have to level out the ground of the field.”

Bjarne Nielsen
Plant Manager, Jelling Varmeværk district heating plant

Voutilakeskus

A Finnish district heating company Elenia Lämpö Oy invested in Savosolar solar thermal system to produce CO2-free energy for their customer, which in this case is a nursing home located in Hämeenlinna. The heat is used for domestic hot water and pool heating.

The installation is the biggest operational solar thermal system in Finland.

Løgumkloster Fjernvarme

Løgumkloster Fjernvarme is a district heating company which annually supplies 35,000 MWh of heat to over 1,500 customers. Heat is produced with a hybrid heating system consisting of a 3 MW pellet boiler, a 1.3 MW hybrid heatpump, a 3 MW absorption heat pump and a solar collector field of 15,300 m2. Additionally, the plant has two gas engines which are capable of producing 7.6 MW of heat and 6 MW of electricity and a 10 MW gas boiler which acts as back-up.

In 2015, Savosolar delivered a 9,700 m2 solar thermal field to Løgumkloster. The second order of 5,600 m2 was delivered and commissioned in the beginning of 2016. The complete field consists of 1030 Savo 15 SG collectors and covers about 20% of the annual thermal energy need of the district heating network. The largest part of the heat demand is covered by the pellet boiler, but Løgumkloster Fjernvarme has plans to change this in the future by extending the solar field and building a large seasonal water storage.

Customer stories

At Summa Energy we help our customers to achieve success in their business and environmental work, while striving for the best possible customer satisfaction. See what Mr Peter Blaser, general manager of Fernwärme Ettenheim GmbH, says about our first delivery to Germany.

Summa Energy on social media

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5 months ago

Solar heat already makes a global difference. 🌍

Every year, solar heating saves over 40 million tonnes of oil and prevents 140 million tonnes of CO₂ emissions.

Meriaura Energy contributes to this growing impact with large-scale projects across Europe — proving that clean heat is not just the future, it’s already here.

Learn more: summaenergy.com/en/home/

#MeriauraEnergy #IndustrialHeat #Decarbonisation #SustainableIndustry #RenewableHeat #solarthermal #Solarthermalenergy #sustainability #globalimpact #cleanheat #industrialprocessheating #cleaninginplace #greenhouses
... See MoreSee Less

Solar heat already makes a global difference. 🌍  Every year, solar heating saves over 40 million tonnes of oil and prevents 140 million tonnes of CO₂ emissions.  Meriaura Energy contributes to this growing impact with large-scale projects across Europe — proving that clean heat is not just the future, it’s already here.  Learn more: https://summaenergy.com/en/home/  #MeriauraEnergy #IndustrialHeat #Decarbonisation #SustainableIndustry #RenewableHeat #solarthermal #Solarthermalenergy #sustainability #globalimpact #cleanheat #industrialprocessheating #cleaninginplace #greenhouses
5 months ago

Solar heat for cities of the future. 🌇

District heating plays a key role in Europe’s clean energy shift — and solar thermal makes it even stronger.

When integrated into low-temperature networks, solar heat provides long-term cost stability, low emissions, and local energy independence.

It’s scalable, sustainable, and ready today. ☀

Learn more: summaenergy.com/en/home/

#MeriauraEnergy #IndustrialHeat #Decarbonisation #SustainableIndustry #RenewableHeat #solarthermal #Solarthermalenergy #sustainability #globalimpact #cleanheat #industrialprocessheating #cleaninginplace
... See MoreSee Less

Solar heat for cities of the future. 🌇  District heating plays a key role in Europe’s clean energy shift — and solar thermal makes it even stronger.  When integrated into low-temperature networks, solar heat provides long-term cost stability, low emissions, and local energy independence.  It’s scalable, sustainable, and ready today. ☀  Learn more: https://summaenergy.com/en/home/  #MeriauraEnergy #IndustrialHeat #Decarbonisation #SustainableIndustry #RenewableHeat #solarthermal #Solarthermalenergy #sustainability #globalimpact #cleanheat #industrialprocessheating #cleaninginplace
5 months ago

Sustainable food starts with sustainable heat. 🌱

Modern greenhouses face rising energy costs and growing sustainability demands.

By switching to solar thermal heating, operators can maintain ideal growing conditions while cutting carbon emissions — supporting cleaner, more resilient food production for the future. 🌍

Learn more: summaenergy.com/en/home/customers/greenhouses/

#meriauraenergy #IndustrialHeat #decarbonisation #SustainableIndustry #RenewableHeat #solarthermal #solarthermalenergy #sustainability #GlobalImpact #cleanheat #industrialprocessheating #cleaninginplace #greenhouses
... See MoreSee Less

Sustainable food starts with sustainable heat. 🌱  Modern greenhouses face rising energy costs and growing sustainability demands.  By switching to solar thermal heating, operators can maintain ideal growing conditions while cutting carbon emissions — supporting cleaner, more resilient food production for the future. 🌍  Learn more: https://summaenergy.com/en/home/customers/greenhouses/  #MeriauraEnergy #IndustrialHeat #Decarbonisation #SustainableIndustry #RenewableHeat #solarthermal #Solarthermalenergy #sustainability #globalimpact #cleanheat #industrialprocessheating #cleaninginplace #greenhouses
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Summa Energy is part of the Summa Defence Group.

Summa Defence Plc is a Finnish defense and security technology group supporting industry growth and strengthening industrial production capacity amid geopolitical change. Summa Defence focuses on dual-use technologies related to security of supply, situational awareness, mobility and defense, which benefit the civilian, security and defense sectors while strengthening comprehensive security, security of supply and crisis management capabilities.

The shares of Summa Defence Plc are listed on the Nasdaq First North Growth Market in Sweden (SUMMAS) and Finland (SUMMA).