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Bankability June 2026 12 min read

European or Chinese inverter: warranty, data and bankability

Editorial responsibility: Franck Tournier · Report a fix

TL;DR

Swissolar anticipates around 14% solar electricity in 2025 and 17% in 2026, with the market stabilizing after the 2025 decline. This guide shows the elements to check in the quote and contract.

What this changes for your decision

Swissolar anticipates around 14% solar electricity in 2025 and 17% in 2026, with the market stabilizing after the 2025 decline. This guide shows the elements to check in the quote and contract.

For your project, the item “manufacturer risk” should be explained in terms of the building, consumption, grid connection and contract. Ask for the source, date and, for calculated values, the method used.

For your project: Assess exact models and available support. Origin alone does not answer questions about warranty, data, parts or long-term service.

Three checks before signing

1. Exact references

Ask for models, technical data sheets, guarantees and service partner identified in Switzerland.

2. Comparable quotes

Compare identical power, site limits, connection and service level.

3. Supplier risk

Check references, qualifications, available parts and liability after commissioning.

References for “Bankability” for your project

Note the date of consultation and the scope of each source. National information does not replace or local rate or technical validation of your project.

Compare quotes on a solid basis

Ask for a reference variant and a conservative variant. Each must separate investment, self-consumption, injection, aid, schedule and responsibilities. You will see if the result holds with a less favorable hypothesis.

For the item “manufacturer risk”, the quote should state the data to confirm before work starts, who will check it and how changes will be handled.

Your next step

Prepare utility bill, roof information, existing contracts and comparable quotes. Answer in writing to open questions, then compare net price, annual profit and contractual consequences.

Frequently asked questions

How should you check the item “manufacturer risk” before deciding?+

Swissolar anticipates around 14% solar electricity in 2025 and 17% in 2026, with the market stabilizing after the 2025 decline. This guide shows the elements to check in the quote and contract. The period of application, the conditions of the network operator and the assumptions of the estimate must be explicit.

Which references should you consult on the topic “Bankability” for this project?+

Swissolar anticipates around 14% solar electricity in 2025 and 17% in 2026, with the market stabilizing after the 2025 decline. Also check the current information from your municipality, canton or network operator when it applies to the project.

What data should appear in the quote?+

For the item “manufacturer risk”, ask for the assumptions, source and date. The quote should also separate self-consumption, electricity exports, financial support, schedule and responsibilities.

What documents should you prepare before comparing?+

Bring together electricity bill, load profile, roof information, existing contracts and quote variations. Add recent confirmations from the network manager and aid agencies.

Sources & method

Sources 2026/2027: Swissolar, Congress photovoltaïque national 2025.

This content is for information only. For your project, verify prices, grants, timelines, permissions and expected returns with the relevant authorities, grid operator and installer, and check the applicable contracts.

Some pages also invite you to get in touch or highlight services, and may contain other commercial messages from the site operator.

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