A Greek solar, wind or battery project ties up money in letters of guarantee long before it earns anything. A 50 MW solar plant with a Final Connection Offer and a place in an ΑΔΜΗΕ priority group, for example, has EUR 5,237,300 lodged: EUR 237,300 for the connection offer and EUR 5,000,000 for priority. Enter your own project below to see what is lodged, what releases or forfeits each guarantee, and what a delay costs. Nothing you type leaves your browser.
Last updated: · Also in Greek: Υπολογιστής εγγυητικών επιστολών: τι διακυβεύεται σε ένα ενεργειακό έργο
| Guarantee | Amount | Release or forfeiture | Provision |
|---|---|---|---|
| Producer certificate | EUR 35,000 per MW | returned when a complete request for a Final Connection Offer is filed | Law 4685/2020, art. 11A |
| Final Connection Offer | 30% of EUR 42, 21, 14 and 7 per kW by band | forfeited if not renewed in time, or if no connection contract takes effect while the offer is valid | Law 4951/2022, arts. 6 and 89A |
| Priority (ΑΔΜΗΕ groups Α, Β, Δ and Π9) | EUR 100,000 per MW | halved on the connection contract, returned on operation | ΥΠΕΝ/ΓΔΕ/84014/7123/2022, art. 6 |
| Bilateral agreement (Group Β) | EUR 100,000 per MW | forfeited if the signed agreement is not filed within 9 months of the offer | same decision, arts. 2 and 7 |
| Proper and timely performance, ΡΑΑΕΥ storage tenders | EUR 250,000, 150,000 or 200,000 per MW | forfeited in full without a connection activation request by 15.12.2026 | Law 5233/2025, art. 43(1), as amended by Law 5338/2026 |
| Standalone storage, 2025 call | EUR 200,000 per MW above 10 MW, EUR 50,000 up to 10 MW | the performance and operation guarantee is halved after 3 years of operation and returned after 6 | ΥΠΕΝ/ΓΔΕ/28255/1143/2025, as amended |
| Total lodged | |||
| Bank fees over the delay | your rate, on the total lodged | ||
| Revenue pushed back by the delay | your revenue estimate | ||
MitOS maps the guarantees per technology: which guarantees, to whom, how much, by when. Contracts, guarantees and invoices sit on the same record as the permits, so an expiring guarantee is a project risk, not a surprise. A rolling 90-day timeline and a live flag feed surface what is due and what is at risk before it costs you the project.
Request a short, focused demo on the real stages of your projects, with every guarantee and deadline in one place.
The scale of art. 6 of Law 4951/2022 gives EUR 791,000, of which 30%, EUR 237,300, is lodged since 31 October 2024.
EUR 100,000 per MW of maximum generation or injection capacity, or EUR 5,000,000 for a 50 MW plant. It is halved when the connection contract takes effect and returned when the plant enters operation.
Yes. The EUR 35,000 per MW is returned when the complete request for a Final Connection Offer is filed.
The calculator is indicative and does not replace legal or financial advice on a specific project. Amounts are those of the provisions cited, as in force on the date at the top.
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