Project development

Helion ist Switzerland's EPC company

Many power plants around the world are developed and built by so-called EPC companies. Helion offers this service for photovoltaic power plants throughout Switzerland.

What does "EPC" mean?

  • E – Engineering: initial planning, tendering, implementation planning, approvals, construction support, inspections
  • P – Procurement: components and services
  • C – Construction: DC generators, AC network connection, scaffolding, underground work, construction site logistics, etc.

We supply turnkey solar power plants

We hand over the turnkey photovoltaic power plant to you, in one of the following project phases depending on your preference:


  • Sale of the project after the approvals have been granted
  • Sale of the project after the start of construction
  • Sale of the project after commissioning



You invest, we build.

Our process

  • Property search

    We actively look for roof or infrastructure areas in Switzerland that are suitable for the installation of photovoltaic power plants. Our specialists check the potential properties remotely or on site and carry out a feasibility analysis. As soon as a site is economically viable, we enter into negotiations with the property owners and conclude an easement agreement (also known as a roof usage contract), which provides long-term security for all parties involved.

  • Project development

    Once the easement agreement is signed, the actual project development begins. Our experienced project developers internally determine and fix the capital expenditures (CAPEX) and the operating expenses (OPEX). We also analyse the proportion of self-consumption using a load profile and simulate the future energy output.


    We conduct negotiations with the energy suppliers and thus ensure optimal energy supply contracts (e.g. PPA = power purchase agreement). Depending on the size and type of project, we choose the appropriate subsidy system and register the project with the federal government. If there are future tender procedures in Switzerland, we will also take care of this process.


    Finally, all these parameters are mapped in software specially developed for renewable power plants which we use to simulate the business case. The final results indicate the internal rate of return (IRR) of the project, which inform the liquidity planning and the cash flow.

  • Construction

    When the target output is reached, the project is passed on to the Construction Department and the implementation planning stage is initiated. This includes, for example, carrying out the various approval procedures (planning application, application for technical connection to the distribution grid operator, planning approval procedure with the Federal Inspectorate for Heavy Current Installations and notification of installation) and the procurement of materials and subcontractors. This planning phase takes three to six months, followed by the construction of the photovoltaic power plant, which takes another two to three months.

  • Commissioning and transfer to the operational phase

    Finally, the power plant is put into operation, an internal inspection (by our experienced inspectors) and an external audit are carried out. Furthermore, the project is handed over to our Service Department, which then takes care of monitoring the power plant, regular maintenance and any troubleshooting.

  • Result

    The photovoltaic power plant is now ready to generate “clean” and reliable returns for 30 years.