All posts by gfnoffice

Pori Area Wide District Cooling System

Pori Area Wide District Cooling System

Feasibility Review and Pre-engineering of District Cooling System in Pori, Finland; 2012Pori District Cooling

  • District Cooling Network (6 km)
  • Consumer-end Metering Solutions
  • Concept and Capacity Optimization (9 MW)
  • Energy Optimization
  • Investment and O&M Cost Estimates
  • Financial Analysis

Feasibility of District Cooling in Pori for a Large Public Building Complex Area and a Preliminary Business Plan for the Pori Area Wide DC Network; 2011

  • Cooling Demand Assessment
  • Cooling Production Technique Review
  • Concept Design
  • Cost Estimates
  • Preliminary Financial Analysis

Client: Pori Energy Ltd

Pori Energy Ltd is a municipal energy company providing high-quality energy services having more than 100-year history in the energy sector. Pori Energy’s main products are electricity, district heating, industry energy services and contracting and maintenance services.

Espoo Area District Cooling Supply

Espoo Area District Cooling Supply

Pre-Engineering (in cooperation with Helsingin Energia); 2011

  • District Cooling Network (18 km)Chiller_and_Heat_Pump
  • Movable Container Units
  • Consumer-end Metering Solutions
  • Preparation of Permitting Process
  • Centralized District Cooling Plant (30 MWc) and Rock Cavern Accumulator (25 MWc, 17,000 m³)
  • Investment and O&M Cost Estimates

Client: Fortum

Fortum is the biggest power company in Finland. Their operations focus on the Nordic countries, Russia, Poland and Baltic Rim area. Their activities cover the generation, distribution and sales of electricity and heat as well as related expert services. In 2011, Fortum’s sales totaled EUR 6.2 billion and comparable operating profit was EUR 1.8 billion. Fortum’s shares are quoted on NASDAQ OMX Helsinki.

Lahti District Cooling System

Lahti District Cooling System

Pre-feasibility Study; 2010


Client: Lahti Energy Ltd

Lahti Energy Ltd is a versatile energy company whose main business is the production and supply of electricity and heat. Electricity is supplied in the open market to all parts of Finland, while district heat – produced mainly in cogeneration (CHP) plants – is distributed within the region of Lahti and the nearby municipalities.

Marja-Vantaa Area District Cooling System

Marja-Vantaa Area District Cooling System

Feasibility Study; 2009 – 2010
Marja-Vantaa District Cooling

The project was carried out by Greenfield Consulting in cooperation with Vantaa Energy Ltd, which is one of Finland’s largest municipal energy companies. The company is owned by the City of Vantaa (60%) and the City of Helsinki (40%). Vantaa Energy produces and sells electricity and district heating. In addition, it offers natural gas for the needs of industry. The company is responsible for the construction, operation and maintenance of district heating networks in Vantaa. A significant part of the electricity is generated efficiently at the Martinlaakso combined heat and power plant, which uses natural gas and coal as main fuels.

Heat and electricity demands as well as potential energy supply schemes for the new residential and workplace area of Marja-Vantaa were evaluated by Vantaa Energy Ltd.

District cooling has not been assessed before in the area of Vantaa. Currently only two large scale district cooling networks exist in Finland, located in Helsinki and Turku. The target of the project was to evaluate the cooling potential of Marja-Vantaa area, and to find out the most cost-effective district cooling system taking into account the environmental aspects. The study also included comparing centralized district cooling with decentralized cooling production.

To start with, the study reviewed the general global development trends in air conditioning. After establishing the cooling demand at Marja-Vantaa, a concept design was carried out for different cooling alternatives including network design and extent, routing and specific sites. Different cooling production technologies based on absorption process and electrical compressors were assessed as well as all the other components associated with district cooling systems from the cooling production down to customer side were evaluated.

Three district cooling system configurations were formed by comprising absorption chillers, compressor chillers, heat pumps and other components related to a district cooling system. The work included assessing the operational efficiencies, investment and O&M costs for each alternative. Financial analysis included net present value and internal rate of return taking into account all investment and operating costs for each system configurations during the operation of 25 years. Carbon dioxide emissions were calculated and climate effects of refrigerants of the chillers were evaluated.

As a conclusion, the compressor cooling system proved to be more cost-effective compared to either absorption cooling or heat pump system, although margins were not significant. From CO2 emission point of view, the heat pump system would be the most advantageous, saving a total of 1,700 tonnes of CO2 annually. Compressor cooling system would cause annual emissions of 210 tCO2 and absorption cooling system 160 tCO2 respectively.

Client: Vantaa Energy Ltd

Vantaa Energy Ltd is one of Finland’s largest urban energy companies. Vantaa Energy produces and sells electricity and district heating. In addition, it offers natural gas for the requirements of industry.

Heat network projects in the UK

Heat Network Projects in the UK

Greenfield has completed a number of heat network masterplanning and feasibility study projects for various local authorities supported by the Heat Network Delivery Unit of Department of Energy and Climate Change.

Advancement of technical and economic business case for a proposed district heating system at a large and complex MOD facility
Client: Confidential
2016 September – ongoing

Feasibility for District Heating in Swansea
Client: City and County of Swansea
2015 – ongoing

Heat mapping, masterplanning (Wichelstowe and New Eastern Villages) and feasibility study (North Star)
Client: Swindon Borough Council
2016 – ongoing

Heat Mapping and Energy Master Planning in Slough
Client: Slough Borough Council

Energy masterplanning in Cheshire West
Client: Cheshire West and Chester Borough Council
2015 – 2016

Heat Network Mapping for Oxford City (three feasibility studies)
Client: Oxford City Council
2015 – 2016

Energy mapping, masterplanning and full technical economic feasibility study for a proposed district energy network at a large and complex MOD facility
Client: Confidential

Rural Off Gas Grid Heat Network Study in Cheshire Green and Audlem
Client: Cheshire East Council

East Runcorn Energy Network Feasibility Study
Client: Halton Borough Council
2014 – 2015

Leighton West Deep Geothermal Heat Network
Client: Cheshire East Council

Oxford Outline Heat Master Plan
Client: Oxford City Council

Private Energy Market Fund L.P. (PEMF)

Private Energy Market Fund L.P. (PEMF)

private energy market fund

Mr. Lehdonvirta managed the initial strategy development, fund raising and establishment of Private Energy Market Fund L.P. (PEMF), a EUR 26 million private equity fund. He acted as the Managing Director of the Fund Management Company Emerging Power Partners Ltd (EPP) until 2006 when PEMF became fully invested, and again since Nov. 2012 for the final exit phase. PEMF’s equity and quasi-equity investments included biomass, biogas, wind power, ESCO companies (energy efficiency) and combined heat and power, in Asia and in Europe. Responsibilities included:

  • Management and business administration of the Fund Management Company EPP and the Fund Company PEMF
  • Development, structuring, due diligence and closing of PEMF’s investments
  • Hands-on establishment of management and corporate governance practices in portfolio companies
  • Strategic development, supervision and board level management of portfolio companies
  • Negotiating and implementing the exits

Mekong Brahmaputra Clean Development Fund L.P.

Mekong Brahmaputra Clean Development Fund L.P.

The fund invests in the clean energy and environment sectors in selected developing countries in the Greater Mekong Subregion and South Asia. It invests mainly in companies or entities engaged in renewable energy, energy efficiency, and water conservation and waste recycling projects. The fund is managed by Dragon Capital Clean Development Investments Ltd., Vietnam.

Mr. Lehdonvirta is an Investment Committee (IC) member of the fund since its inception in 2010. The tasks of the IC include:

    (i) to provide technical support to invest in companies and projects which use or promote Clean Technology,

    (ii) to ensure that “Triple Bottom Line” principles are applied; to require a positive impact on the environment and contribution to sustainable development, in addition to financial viability, and

    (iii) to carry out investment assessments. Review the investment term sheet presented by the Investment Manager (IM) of the Fund, propose modifications and complementary actions and decide either to continue or discontinue the investment process. Review and approve or disapprove the investment proposals and divestment proposals composed by the IM.

A Feasibility Study on “Renewable Energy for Rural Africa, Phase 1″

A Feasibility Study on “Renewable Energy for Rural Africa, Phase 1″

Greenfield carried out a review and analysis of the operational environment and financing options in Ethiopia, Kenya, Zambia and Mozambique, including the salient features of energy production and use, infrastructure, regulatory framework and main stakeholders. The objective of the work was to define and establish the basis for subsequent formulation of the investment strategy and possible operational set-up for an investment fund or a development company.

Advisory service on Carbon Fund Development

Advisory service on Carbon Fund Development


Advisory Service on Establishing a JVC for Renewable Energy Investments in Ukraine

Advisory Service on Establishing a JVC for Renewable Energy Investments in Ukraine