Background
#PV contracting in Obwalden means, under the EWO model, that the utility builds and operates the system on your company’s roof while you purchase the generated solar power at the contractually agreed fixed price.
In the standard model, the term is 15 to 25 years depending on project scope and system size; afterwards, ownership transfers to you free of charge. EWO names a minimum system size, sufficient offtake capacity and a suitable roof as basic requirements. One important exception to any blanket assumption is the private-home case: the current contracting page explicitly describes company roofs, so homeowners must clarify availability directly with EWO.
For your roof
What does a system on your roof cost?
With your address we calculate price range, incentives and payback for your roof from federal data. We email the report straight away.
Free and non-binding · no unsolicited calls
Rather talk directly? +41 78 615 90 58
What drives the economics
#The investment logic is the first difference from owning a PV system: EWO builds and operates the system at its own cost and risk, while the company purchases the solar power at a fixed price. The contract therefore shifts capital commitment, but does not remove the need to match the roof and electricity demand technically.
The contract term affects the total price: EWO states 15 to 25 years depending on project scope and system size. A fixed price can therefore only be compared together with the term, expected solar output and the rules for roof work, operational interruption or early exit.
The price is not a published uniform tariff: EWO states that the electricity price is based on system size, investment costs and the contracting term. The economic calculation therefore needs the specific quote and a comparison with the expected grid-electricity price, not just the label “fixed price”.
Ownership has two defined moments: after the agreed 15- to 25-year term, the system passes into the company’s ownership free of charge. Before then, a buyback is possible if the residual value defined in the contract for that year is accepted.
The roof and load situation determine whether the project can proceed: EWO names a minimum system size, offtake capacity and suitable roof area as basic requirements. A large, shaded or structurally unsuitable roof is therefore not a contracting project merely because the owner does not want to invest directly.
Additional components must be read separately: depending on the project, EWO can include batteries or optimisers, but does not promise them for every contracting arrangement. The quote should therefore show the system, storage, optimisation, operation and any additional costs as separate items.
The process in six steps
#Tick off for your project
Define the use case
record whether the roof belongs to a company, who would purchase the solar power and which loads occur during the day. The current EWO contracting description targets companies; for a private home, product availability must be clarified first.
Pre-check the roof and basic requirements
compile roof area, roof condition, shading, planned renovations and expected offtake capacity. EWO names a minimum system size, offtake capacity and a suitable roof area as conditions for implementation.
Obtain an EWO pre-assessment and system concept
have a tailored system planned with modules, mounting structure and, where appropriate, storage or optimisers. The key questions are how much PV capacity the roof can support and how much the company can consume itself.
Review the contracting offer on a like-for-like basis
compare the fixed price, 15- to 25-year term, expected solar output, operation and maintenance, ownership during the term and rules for roof work and downtime. Compare the offer with owning the same system directly.
Record buyback and transfer in writing
check that free transfer at the end, annual buyback values and responsibility for removal or replacement if the contract ends early are clearly regulated in the draft. EWO’s product sheet names the buyback-price list as a contract annex.
Coordinate technical and contractual implementation
before installation, system scope, fixed price, term, ownership, operation, additional components and the property-specific grid and permit steps must align. After commissioning, EWO services the system during the term according to its published contracting description.
Checked for your roof, not just read up on
What does a system on your roof cost?
With your address we calculate price range, incentives and payback for your roof from federal data. We email the report straight away.
Free and non-binding · no unsolicited calls
Rather talk directly? +41 78 615 90 58
Frequently asked questions
#Sources
#The responsible authorities are decisive. Always verify binding details – amounts, deadlines and conditions – for your specific property against the current status of the respective authority.