ESCo models – General
IEA-SHC INFO SHEET 45.C.2.1
April 2015 - PDF 0.39MB
ESCos are companies that provide a full range of energy services with repayment in generated savings. They offer a complete package, from design, finance and installation to operation, including maintenance and fuel supply. Energy service companies (ESCos) could be a way to increase the uptake rate of large scale solar heat projects in larger buildings in the public and private sector.

ESCo models – General
IEA-SHC TECH SHEET 45.C.2.1
April 2015 - PDF 0.74MB
ESCos are companies that provide a full range of energy services with repayment in generated savings. They offer a complete package, from design, finance and installation to operation, including maintenance and fuel supply. Energy service companies (ESCos) could be a way to increase the uptake rate of large scale solar heat projects in larger buildings in the public and private sector. Since the type of ESCo for delivering renewables is relatively rare, this approach is poorly understood. Thus, the project will analyze issues central to ESCo establishment, such as investment models, contracts and other relevant issues with regard to which information is limited and dispersed in the EU and worldwide. This work will also deepen our understanding of the hurdles which ESCos are faced with and will provide information on ways of overcoming such hurdles in practice. At the moment, the perceived risks and uncertainty decrease the prospect for switching to sustainable methods of either generating or using renewable energy. It is envisaged that by managing these risks, the ESCos of this kind will bring about a change in the perceptions of potential recipients.

ESCo services, best practise example: Caixa Geral de Depósitos, Lisbon, Portugal
IEA-SHC TECH SHEET 45.C.2.2A
April 2015 - PDF 0.68MB
In Lisbon a large office building of the bank Caixa Geral de Depósitos (CGD) are supported by solar heat and cold. The collector area is installed in roof of the office building. The office building has 17 floors with an office space of 100,000 m². During the working time 6,000 employed persons are permanently in the building. The generated energy is used to power an absorption chiller. Furthermore, the energy is used for the reheating system of the ventilation appliances as well as contributing to the heating of hot water.

ESCo services, best practise example: Wasserwerk Andritz, Graz, Austria
IEA-SHC TECH SHEET 45.C.2.2B
April 2015 - PDF 0.74MB
Solar.nahwaerme Energiecontracting Gmbh is a subsidiary company of nahwaerme.at Energiecontracting GmbH, which is an Energy services company. It was established and operates in collaboration with local partners, systems based on renewable energy sources. In the project “Wasserwerk Andritz” a large scale solar thermal plant was erected on the ground of the local water supplier. The system supports the local heating system (LH) of the office buildings of the local water utility. The surplus heat is fed into the district heating grid (DH) from the city of Graz. With the installed high temperature (HT) flat plate collectors, the necessary temperatures for district heating supply can be achieved. On the local water conservation area, enough open space was available for construction of the plant.

Template for ESCo contract – extended version
IEA-SHC TECH SHEET 45.C.2.3
December 2014 - PDF 1.21MB
Example template (extended) for an “Energy Performance Contract”, here named “Solar Energy Provision Agreement” for services done by an “Energy Service Company” (ESCo.)

Template for ESCo contract – short version
IEA-SHC INFO SHEET 45.C.2.3
December 2014 - PDF 0.36MB
Example template (short) for “Energy Performance Contract” for services done by an “Energy Service Company” (ESCo.)

ESCo GUIDE - Models for ESCo Services
October 2011 - PDF 2.08MB

IEA Task 45, Subtask C, deliverable 4 focuses on a relatively new approach, energy service companies (ESCos) emerging as a way to increase the uptake rate of large scale solar heat projects in larger buildings in the public and private sector. ESCos are companies that provide a full range of energy services with repayment in generated savings. They offer a complete package, from design, finance and installation to operation, including maintenance and fuel supply.

ESCo tool - Excel Calculation Tool for Assessing Customer’s Profitability of Investment with ESCO Company
October 2011 - XLS 0.06MB

Manual for ESCo tool
October 2011 - PDF 0.08MB

The project "Expanding biomass and solar heating in public and private buildings via the energy services approach (Bio-Sol-ESCo)" is supported by the European Commission through the IEE program (contract no. IEE/07/264). The sole responsibility for the content of this report lies with the authors. It does not represent the opinion of the European Communities. The European Commission or the authors are not responsible for any use that may be made of the information contained therein.