Decision tools
Project File & Marketing Readiness
Run battery storage, PV, and grid connection projects as a project file. The evidence for maturity stages R0–R8 follows the German transmission system operators' maturity procedure and the checklists of banks and buyers. The tool shows the stage reached, the next steps, expiring deadlines, and when the project can be marketed.
Project data
Maturity stages and evidence
R0Site idea
0/303Land parcels and area (ha) identified
05Possible grid connection point with distance and voltage level named
04Exclusion screening: protected areas and planning law (storage: privileged use § 35 (1) no. 11/12 BauGB; PV: development plan required?)
R1Land exclusive
0/203Land register extract without conflicting encumbrances (sections II/III)
03Written exclusivity from the owner, at least 7 months, not terminable for convenience
R2Grid requested
0/305Grid connection inquiry or application filed (date, MW, voltage level)
04Written permitting strategy
06Outline technical concept: system description, site layout approx. 1:1000, schedule to commissioning
R3Grid secured
0/305Binding, dated grid connection commitment or reservation (DSO) or accepted TSO offer with security paid
05Conditions of a flexible connection agreement (ramps, balancing limits) documented – or none apply
03Land rights: lease or easement agreement ≥ 10 years, or notarised option/reservation binding ≥ 12 months
R4Permit applied for
0/204Building or BImSchG permit application filed (PV: resolution to draw up a development plan)
04Reports available: noise, fire and water protection (AwSV), nature and species protection, soil
R5Permitted
0/304Permit granted
05Grid connection agreement signed or ready for signature
03Easement granted, cable route and access secured
R6Ready to build
0/504Permit final and non-appealable, no lawsuits and no conflicting third-party rights
03All land rights secured in rem, term at least operation plus decommissioning
05Construction cost contribution (BKZ) settled (amount and due dates)
09Technical design and CAPEX estimate available
04Construction not yet started
R7Final investment decision / construction
0/409Financing committed, financial model with sensitivities (spread −20 %, degradation +20 %, CAPEX +10 %, grid delay 6–12 months)
07EPC or battery supply agreement and O&M/LTSA signed
07Revenue contract: tolling, PPA, optimiser or EEG award
08Grid fee regime documented (date of investment decision, see note)
R8Commercial operation
0/206Commissioning with acceptance reports
08Registration in the Marktstammdatenregister
Valuation
Benchmark: RTB transactions in H2 2024 were at 45,000–62,500 €/MW (PF Nexus, indicative; more recent market prices are not publicly available).
Data note: All input in this tool stays local in your browser (localStorage) and is not transmitted to any server. “Reset” deletes the stored input.
Suggested next steps
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