Lämpösi Oy is a development and consultant company. The company sells energy expert services to customers. We can also establish new companies with our customers and partners.
The company was established in 2010 as Telemec Capital Oy with auxiliary name Lämpösi Oy. In 2013 Petri Heinonen and Markku Miettinen bougt the shares of the company. The name of the company was changed to Lämpösi Oy.
In 2013 Lämpösi Oy was a minority shareholder and expert partner when establishing a new DH company Kuuhankalämpö Oy. Lämpösi Oy was responsible of developing a woodchip and pellet heating plant and a DH system in Hankasalmi municipality for Kuuhankalämpö Oy.
In 2014 Lämpösi established the energy company EKO Energiapalvelut ETK Oy with four other partners. The company built a woodchip heating plant and a DH network in Konginkangas area in the city of Äänekoski. The project was developed and carried out by Lämpösi Oy.
In 2018 Lämpösi Oy started developing a new logistic system for small scale woodchip and pellet heating plant based on mobile heating units and pneumatic blowing technology.

Vast and versatile experience and work history in energy sector

Heat production, sales and marketing:

Project development, customer service, business development

Small and medium size heat production and business models:

Planning energy solutions, technology evaluation, project development, organizing heating plant operation.

Solid biofuels, bio-oil:

Organizing the supply of energy wood, pneumatic transport of woodchips and pellets (pneumatic blowing technology).

New energy production solutions:

Converting from oil to bioenergy, small scale CHP, energy efficiency.

Energy companies:

Etelä-Pohjanmaan Voima Oy, Pohjolan Voima Oy, Teollisuuden Voima Oy, Voimavasu Oy, Vaskiluodon Voima Oy, Mäntän Energia Oy, Jyväskylän Voima Oy, Kuuhankalämpö Oy, EKO Energiapalvelut ETK Oy.

Acquisitions and contract management:

Forssan Energia Oy, Voimavasu Oy, Lieksan Lämpö Oy, Tohman Lämpö Oy.

Waste to energy projects:

Hämeenkyrö, Hyvinkää, Lohja.

Development projects:

Business strategy and business plans, utilizing bio-oil in replacing heating oil with pyrolysis oil, mobile woodchip heating units and pneumatic woodchip logistic system for small scale heating plants.

Strong partnership network and contract management skills.


Petri Heinonen

M.Sc Petri Heinonen, Jyväskylä, Finland. Mobile phone +358 400 340 319, email:

  • EKO Energiapalvelut ETK Oy, managing director
  • Kuuhankalämpö Oy, managing director 2013 – 2016
  • Lämpösi Oy, partner, managing director
  • Sähkösi Oy, partner, managing director
  • Vapo Heat & Power, Business unit director
  • More than 20 years’ experience in several positions in energy production and electricity market in power companies Etelä-Pohjanmaan Voima Oy, Vastiluodon Voima Oy and Etelä-Pohjanmaan Alueverkko Oy in managing and expert activities.
Markku Miettinen

M.Sc Markku Miettinen, Jyväskylä, Finland. Mobile phone +358 400 342 853, email:

  • EKO Energiapalvelut ETK Oy, board member
  • Lämpösi Oy, partner, chairman of the board
  • Sähkösi Oy, partner, chairman of the board
  • Vapo Oy, R&D activities. Last position in Vapo Oy project manager in the Forest BtL biodiesel project
  • Vapo Heat & Power business unit, R&D director
  • Manager of the Heat and Power business - 2013
  • Establisher of the Vapo Oy Heat business activities in early 1990’s
  • Technical Research Centre of Finland (VTT) in, Jyväskylä. Project manager and team leader in combustion technology and energy economy studies.


Lämpösi Oy is holding a minority share in the energy company EKO Energiapalvelut ETK Oy. We are an expert partner in the company and in responsible of project development and carrying out heating system projects for EKO Energiapalvelut ETK Oy.
    • EKO Energiapalvelut ETK Oy was established in 2014 to supply heating services by renewable energy sources in Finland.
    • EKO Energiapalvelut ETK Oy offers and carries out turn-key heating solutions for municipalities, industry and large buildings. The first DH project was in Konginkangas, City of Äänekoski.
    • The services provided by the company
  • Developing energy projects
  • Investing and financing heating system projects
  • Organizing the operation of heat production
  • Planning and construction of DH networks related to heat production
Lämpösi Oy has partners in designing, manufacturing and marketing woodchip blowers
  • Mertala Innovations Oy
  • Rautaseiska Oy