Core service
A battery is not a given. Only when the numbers work.
In Switzerland, 47% of all new PV systems are already installed with battery storage, with a total installed capacity of 896 MWh — enough to supply 100,000 households for a full day. The question is not whether a battery is technically feasible, but whether it makes economic sense for your building, your consumption profile and your tariffs. LFP technology has replaced NMC as the standard: 6,000–10,000 cycles, 15–20 years of service life, payback 10–14 years residential, 4–6 years commercial. Vigorek does not sell standard batteries — we compare variants and show transparently when the investment pays off.
In short
47% of new Swiss PV systems are installed with battery storage today — we show transparently when LFP batteries (CHF 650–1'000/kWh, 15–20 years) pay off and when they do not. Self-consumption rises from 25–35% (PV-only) to 50–65% with battery and EMS.
No standard price – every roof is different. The estimate takes about 2 minutes and is non-binding.
Project profile
Typical use case
Households with an EV and heat pump where PV surplus charging saves CHF 500–1,500 per year compared to grid consumption.
Coverage
Planning and installation of photovoltaics in the Zurich region, Limmat Valley and eastern Aargau. Electrical work by a partner with an installation licence.
Contact
Service in detail
What you can expect from us.
From planning to handover: the scope, the standards behind it and the projects this service is made for.
Scope of work
What we concretely handle.
From substructure to handover, every step is defined before the first material reaches the roof.
What’s included
- Variant comparison of PV-only, PV + battery (LFP), PV + wallbox and combined expansion stages — with realistic payback ranges instead of a standard recommendation.
- Coordination of charging power (11 kW vs. 22 kW), grid connection, load management and PV surplus charging to the actual daily and evening consumption profile.
- Integration of an energy management system (EMS/SolarManager) to prioritise heat pump, battery, wallbox and grid feed-in — with open interfaces (Modbus, OCPP) and no vendor lock-in.
- Backup power capability (CHF 15,000–20,000 for critical loads) only where a concrete risk profile exists — not as a standard build.
Why this is chosen
How you recognise clean work.
It is not the result alone that counts, but ownership, compliance and a traceable process.
Dependable standards
- No blanket battery recommendation without analysing consumption profile, evening load and tariffs: self-consumption rates without battery 25–35%, with battery 50–65%.
- LFP technology (CHF 650–1,000/kWh) with 6,000–10,000 cycles and 15–20 years of service life — we show as a scenario with ranges when the investment pays off: commercial 4–6 years, residential 10–14 years.
- Wallbox integration with open interfaces (Modbus, OCPP): no proprietary ecosystem that restricts future expansions or product changes.
- Load management prevents overloading the grid connection when running heat pump (15 kW) and wallbox (11–22 kW) simultaneously — invisible in daily use, but technically decisive.
Typical application
Where this service makes the difference.
Not every roof needs the same depth – these projects benefit the most.
Especially fits
- Households with an EV and heat pump where PV surplus charging saves CHF 500–1,500 per year compared to grid consumption.
- Owners who want to increase their self-consumption rate from 25–35% (PV-only) to 50–65% (with battery) — calculated economically, not just promised.
- Commercial operations with high daytime consumption where EMS and battery storage can increase self-consumption.
The Founders
Engineering depth. Financial structure.
You know before signing who calculates your project and who builds it: two founders, one for engineering, one for finance. A solar system only works long-term when both fit together from the start.
Christian Freiberger
CFA · former KPMG Senior Manager
Co-Founder · Strategy & Finance
Independent management consultant since 2015, previously Senior Manager at KPMG. Most recently Interim Treasury Manager at an energy storage manufacturer. Christian brings the financial structure: liquidity planning, transparent calculations and no project whose numbers don’t add up.
Marc Hammerschmidt
B.Eng. Mechanical Engineering
Co-Founder · Engineering & Planning
Marc handles the technical side: planning, structural analysis and system integration. He has helped install systems on roofs himself and plans so that nothing has to be improvised on the roof.
Regional Expertise
Based in Oberengstringen, rules for your region.
Every region has its own regulations, subsidies, and grid operators. We know the local conditions and support your project perfectly tailored to your location.