Providers from neighbouring countries can genuinely be cheaper – lower wage costs and large purchasing volumes are not tricks. The risks lie not in the nationality, but in the distance to the Swiss system: electrical standards and safety certificate (SiNa), connection requests and incentive applications, warranty across the border and the service case in year 8. Those who check seven points can also buy well across borders – those who skip them buy a ticket to a gap in responsibility. (As of: July 2026)
Key points in brief
- The price advantage is often genuine – the decisive factor is whether it remains after factoring in Swiss obligations (standards, registrations, service).
- Electrical work in Switzerland requires a local installation authorisation and the safety certificate (SiNa) – clarify exactly who will provide this.
- Connection request, Pronovo/EIV, GO, notification procedure, municipal incentives: Swiss administration decides on several thousand francs of your remuneration.
- A warranty is only as valuable as its enforceability – the contract partner, applicable law and place of jurisdiction must be checked.
- The litmus test remains the service case: who will be on your roof and within what timeframe when the inverter is silent?
Why are foreign providers pushing into the Swiss market?
For the same reasons that Swiss customers request them: the price level in this country is attractive, demand is high, and businesses near the border – especially from southern Germany – have installation capacities and purchasing conditions that are impressive. It would be dishonest to portray this as a threat: competition disciplines prices, including our own. The question for you as the client is more sober: do you get the complete Swiss service – or a German system that is missing the Swiss half?
Where the real opportunities lie
- Price: Lower wage and structural costs have a real impact – differences in the double-digit percentage range do occur, compared seriously with the same scope of services.
- Availability: Where local companies have waiting times, teams near the border sometimes install faster.
- Experience: The German market is large; routine in standard installations is abundant.
Anyone who has a simple standard roof and gets the Swiss obligations neatly sorted out can make a good purchase across the border. The rest of this article is about «neatly sorted out».
The Swiss half: why cross-border projects fail
1. Electrical standards and safety certificate (SiNa). Electrical installations in Switzerland are subject to the Low-Voltage Installation Ordinance: a corresponding installation authorisation is required, and after completion, the safety certificate (SiNa). A foreign company must either cover this itself in a legally compliant manner or work with a Swiss electrical partner. The question «Who signs the SiNa?» is the fastest reliability test of the entire project. For comparison: ecoEn GmbH is registered with ESTI with an ESTI installation authorisation (Art. 14 NIV) for photovoltaic systems (no. SOB-284349-1).
2. The administration on which your money depends. Connection request with the grid operator, Pronovo registration for the one-off feed-in incentive, GO registration, notification procedure at the municipality, any municipal incentives: all Swiss procedures with Swiss deadlines. A provider who is not routinely familiar with the local process will quickly cost you more here than their price advantage yields – the EIV alone amounts to around CHF 3,600 for 10 kWp.
3. Warranty across the border. Who is your contract partner – a Swiss company or the foreign parent? Which law applies, where is the place of jurisdiction? More important in everyday life than in a lawsuit: how far away is the nearest service base, and is the journey for a warranty claim in five years still worthwhile for the provider?
4. The silent assumption «provided by the client». Cross-border quotes like to exclude Swiss specifics – scaffolding according to local regulations, meter box adjustment, registrations «by customer». This is not malice, but ignorance with a price effect: The missing items are ultimately paid by you.
The 7-point check for foreign quotes
1. Contract partner: Swiss legal entity with a CH address – or a foreign company? (Commercial Register/zefix.ch) 2. Electrics: Who has the installation authorisation, who signs the SiNa? Name of the partner in the quote? 3. Administration: Connection request, Pronovo, GO, notification procedure expressly included – with the responsible person? 4. Scope of services: complete according to the 12-point checklist – especially scaffolding and meter box? 5. References in Switzerland: systems installed in this country, not just across the border? 6. Service case: Response time, service base, spare parts warehouse – in writing? 7. Final prices: incl. Swiss VAT and all additional costs – no surprises at the border?
If a quote passes all seven points, the origin of the provider is no longer a counterargument. If it fails on two, the same applies as with any provider with red flags: put it aside.
The cross-border cases that land on our desks rarely have an installation problem – the roofs are mostly done properly. What is missing is almost always the Swiss half: the never-submitted Pronovo registration, the missing SiNa that the grid operator wants to see before installing the meter, the municipal incentives whose deadline was before the start of construction. The price advantage was genuine – and was eaten up again by the administration, plus nerves. Our calm conclusion: there is nothing fundamentally wrong with foreign providers. But there is every reason to ask the seven questions before signing – to every provider, including ours.
Frequently asked questions
Is the installation quality of foreign teams worse?
As a blanket statement, no – installation routine is abundant, especially from large markets. The typical problems lie in the knowledge of the Swiss system (standards, procedures, deadlines), not in the craftsmanship.
Does the one-off feed-in incentive (EIV) also apply with a foreign installer?
Yes – the EIV is linked to the system, not the installer. But someone must submit the application correctly and on time; clarify in writing who.
What about the warranty if the provider withdraws from the Swiss market?
The manufacturer warranties on modules and inverters remain in place – but the processing (removal, shipping, reinstallation) will then require a new local partner. This exact scenario belongs in your risk assessment; a Swiss contract partner with its own service structure neutralises it.
Do I as a customer have to pay attention to anything if foreign installers are working at my place?
Compliance with Swiss registration and employment rules is the responsibility of the provider – reputable companies handle this routinely. If a provider does not have a clear answer to this, it is a warning signal like any other.
Is a second Swiss quote worthwhile for comparison?
Always – if only to see the genuine scope of services. We also check foreign quotes free of charge against our checklist; sometimes the conclusion is: solid offer, renegotiate points 2 and 3 – then go for it.
Free initial consultation
Feel free to compare us – across borders.
Swiss contract partner, in-house installation, SiNa and all registrations included: get our quote as a benchmark.
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Swissolar-certified specialist company · ESTI installation authorisation (Art. 14 NIV) · in Zurich since 2017 · over 150 systems completed · a personal answer from the specialist company, no call centre
Sources: Low-Voltage Installation Ordinance (NIV, authorisation and verification obligations) and ESTI directive no. 233 «Photovoltaic power generation systems»; Pronovo AG; empirical values from installation practice in the Zurich region.
Last updated: 9 July 2026 · Author: ecoEn editorial team
