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One1 offers to its customers


  • Intelligens Hybrid Systems
  • Customized facilities
  • District Cooling Solutions
  • Technology Surveys
  • Networks and customer equipment


  • Heat pumps
  • Bio boilers and plants
  • Solar collectors and panels
  • Micro-CHP plants


  • Energy sales
  • Operation and maintenance services
  • Investment and financing
  • Exhaust air heat pump desing and implementation services
  • Energy efficient district heating and consumer systems interface solutions

One1 implement renewable energy and energy efficiency services and solutions for energy companies, municipalities, and communities, as well as developers and property owners. Common to the provision of sustainable development priciples, as well as new technologies such as heat pumps, solar and biotechnologies creative combinations.

One1 identify to the customer's needs and provides the right energy services and implementations in each target and situation. Our services include the sale of energy as details of the settlement and the desing and implementation of projects - and overall management.

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One1 Energy System


Lappeenrannan Energia