First phase operating; 16 MW IT covers the overall facility. SPIE/Lupp delivery roles and the signed Süwag heat agreement are confirmed, with the separate municipal heat-network service target in 2028.
Read overviewmaincubes FRA03 — Schwalbach
Schwalbach am Taunus, Frankfurt region, Germany
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Register interest in updates to planning status, grid position, capacity claims, delivery teams and policy exposure. Every Power Reality Check client receives 60 days of Site Watch on their assessed site when monitoring is available.
3 cited sources · 5 utility and planning categories reviewed.
Review evidence and gapsObtain FRA03 utility import allocation and energisation evidence for each phase.
Open the full checkOverview
First phase operating; 16 MW IT covers the overall facility. SPIE/Lupp delivery roles and the signed Süwag heat agreement are confirmed, with the separate municipal heat-network service target in 2028.
- Developer / applicant
- maincubes
- Owner
- Not verified
- Operator
- maincubes
Planning and delivery status
Operator explicitly labels FRA03 In Operation and identifies June 2026 completion of phase 1. Page is undated; no exact opening day supplied.
Stage source: Publication date unstatedProject intelligence. This record does not establish that the land or facility is available to acquire.
POWER STUDY
Power
What the power evidence establishes
The site-specific connection scope has not been established for this record.
Power classDNo qualifying rung
No same-scope, dated import-MVA rung has document-seen or better verification. Nearby infrastructure, IT MW and marketing claims cannot upgrade the class.
The class describes published documentary evidence at its stated date. It does not prove current contractual rights, transferability or an energisation date.
Class describes evidence maturity. Public records do not prove current contractual rights, transferable capacity or an energisation date. This record has not received a complete power study review.
Read the rules and verification levels01
Capacity ladder and evidence
Each rung is a separate MVA claim for its stated site or phase. A missing rung is unknown.
01
Applied
Unknown
Not established from the public records reviewed.
What applied mva is evidenced for the assessed site scope?02
Offered
Unknown
Not established from the public records reviewed.
What offered mva is evidenced for the assessed site scope?03
Accepted / contracted
Unknown
Not established from the public records reviewed.
What accepted or contracted mva is evidenced for the assessed site scope?04
Energised
Unknown
Not established from the public records reviewed.
What energised mva is evidenced for the assessed site scope?02
Conflicts and scope comparisons
No conflicting pair is recorded. This does not establish that all public statements have been reconciled.
03
Germany grid context
Network publications frame the claim. They do not allocate capacity to this site.
No country context entries have been linked to this site. Applicable policy, capacity information and reinforcement dependencies need review.
04
Derived energisation window
Earliest plausible yearUnknown
Latest plausible yearUnknown
The observed inputs do not establish a bounded delivery range. Open bounds stay unknown.
Rule
Use only a same-scope, dated, document-verified capacity rung and an applicable duration to energisation published by the observed site operator. The named process operator and a named source publisher must match that operator. Earliest year is the maximum of stage date plus minimum duration and each evidenced readiness constraint. Latest year is the maximum of stage date plus maximum duration and each published upper constraint only when every required input is bounded. An offer-processing duration is excluded. A missing required input leaves the affected bound unknown; no padding or contractual delivery promise is inferred.
No observed inputs establish this result.
Dependencies driving the range
- Connection-dependent reinforcement scope and completion dates: unknown.
- Grid-works planning status and programme: unknown.
- Applicable connection-policy conditions and programme: unknown.
What the earliest case requires
- Connection-dependent reinforcement scope and completion dates introduces no later constraint than the earliest case; this remains unverified.
- Grid-works planning status and programme introduces no later constraint than the earliest case; this remains unverified.
- Applicable connection-policy conditions and programme introduces no later constraint than the earliest case; this remains unverified.
Missing inputs leave the range open
- A dated, document-verified import-MVA rung for the assessed scope.
- An applicable duration from the evidenced stage to energisation, published by and matched to the observed site operator, rather than an offer-processing target.
- Connection-dependent reinforcement scope and completion dates
- Grid-works planning status and programme
- Applicable connection-policy conditions and programme
05
Indicative HV and connection capex
Unknown
Rule and scope
Sum each published complete scope quantity multiplied by the matching published benchmark minimum and maximum. Configuration, voltage, route type, unit, country applicability, currency and explicit price base year must match. No assumed route length, transformer count, exchange rate, inflation, fee uplift or partial index is inserted. The result is an indicative benchmark band, not an operator quotation or contractual connection charge.
No observed inputs establish this result.
Scope questions
- Obtain a published complete connection scope with voltage, configuration and measured quantities.
- Establish that every necessary connection-work component is included in the published scope.
- Identify network and customer works, upstream reinforcement, land and wayleaves, taxes, fees, securities, contingency and the price base.
06
Alternatives and policy exposure
Behind-the-meter generation
Unknown
Not established from the public records reviewed.
What behind-the-meter generation is evidenced, and at what scope?Planning / policy requirement
Unknown
Not established from the public records reviewed.
Does the applicable planning or connection policy require behind-the-meter generation?Battery storage
Unknown
Not established from the public records reviewed.
What battery storage is evidenced, and at what scope?Planning / policy requirement
Unknown
Not established from the public records reviewed.
Does the applicable planning or connection policy require battery storage?Private wire
Unknown
Not established from the public records reviewed.
What a private wire is evidenced, and at what scope?Planning / policy requirement
Unknown
Not established from the public records reviewed.
Does the applicable planning or connection policy require a private wire?Gas
Unknown
Not established from the public records reviewed.
What gas supply or generation is evidenced, and at what scope?Planning / policy requirement
Unknown
Not established from the public records reviewed.
Does the applicable planning or connection policy require gas supply or generation?Connection claim against current policy
Unknown
Not established from the public records reviewed.
Does the published connection claim meet the policy applicable to its application date, location and agreement status?07
Open questions for a Reality Check
Generated from unknown fields, missing derivation inputs and unresolved evidence. The questions identify the documents or specialist checks needed next.
60 questions to resolve
- Which TSO or DSO is responsible for this demand connection?
Not established from the public records reviewed.
- What is the operator-confirmed connection substation or circuit?
Not established from the public records reviewed.
- What voltage level is specified for the demand connection?
Not established from the public records reviewed.
- What are the evidenced site and connection-point coordinates, and their calculated straight-line distance?
Not established from the public records reviewed.
- What grid route length is published, and for which circuit?
Not established from the public records reviewed.
- What applied mva is evidenced for the assessed site scope?
Not established from the public records reviewed.
- What is the effective date of the applied connection evidence?
Not established from the public records reviewed.
- Which buildings or phases does the applied connection evidence cover?
Not established from the public records reviewed.
- What evidence level can be supported for capacityLadder.applied?
Verification has not been established.
- What offered mva is evidenced for the assessed site scope?
Not established from the public records reviewed.
- What is the effective date of the offered connection evidence?
Not established from the public records reviewed.
- Which buildings or phases does the offered connection evidence cover?
Not established from the public records reviewed.
- What evidence level can be supported for capacityLadder.offered?
Verification has not been established.
- What accepted or contracted mva is evidenced for the assessed site scope?
Not established from the public records reviewed.
- What is the effective date of the accepted connection evidence?
Not established from the public records reviewed.
- Which buildings or phases does the accepted connection evidence cover?
Not established from the public records reviewed.
- What evidence level can be supported for capacityLadder.accepted?
Verification has not been established.
- What energised mva is evidenced for the assessed site scope?
Not established from the public records reviewed.
- What is the effective date of the energised connection evidence?
Not established from the public records reviewed.
- Which buildings or phases does the energised connection evidence cover?
Not established from the public records reviewed.
- What evidence level can be supported for capacityLadder.energised?
Verification has not been established.
- What connection agreement type and current status are documented?
Not established from the public records reviewed.
- Does the agreement impose phased import-capacity limits?
Not established from the public records reviewed.
- What flexibility or curtailment obligations apply?
Not established from the public records reviewed.
- What on-site generation obligations apply?
Not established from the public records reviewed.
- What securities are required, posted and still valid?
Not established from the public records reviewed.
- What connection longstop or milestone dates apply?
Not established from the public records reviewed.
- What is the published IT load in MW?
Not established from the public records reviewed.
- On what electrical basis is the IT load in MW stated?
Not established from the public records reviewed.
- Which phase or campus does the IT load in MW cover?
Not established from the public records reviewed.
- What is the published facility load in MW?
Not established from the public records reviewed.
- On what electrical basis is the facility load in MW stated?
Not established from the public records reviewed.
- Which phase or campus does the facility load in MW cover?
Not established from the public records reviewed.
- What is the published import capacity in MVA?
Not established from the public records reviewed.
- On what electrical basis is the import capacity in MVA stated?
Not established from the public records reviewed.
- Which phase or campus does the import capacity in MVA cover?
Not established from the public records reviewed.
- What operator-published connection-to-energisation duration applies to this site and connection stage?
An application-to-offer processing target is not an energisation duration.
- Which reinforcements does the connection depend on, and what dates are published?
Not established from the public records reviewed.
- Which grid works require planning, and what is their current consent status and dated programme?
Not established from the public records reviewed.
- Which connection-policy conditions apply, and when could they be satisfied?
Not established from the public records reviewed.
- What complete connection scope is published: bays, stations, voltage, circuits, route lengths and underground or overhead configuration?
Not established from the public records reviewed.
- Is the published connection scope complete enough to match every component to a sourced benchmark?
Not established from the public records reviewed.
- What behind-the-meter generation is evidenced, and at what scope?
Not established from the public records reviewed.
- Does the applicable planning or connection policy require behind-the-meter generation?
Not established from the public records reviewed.
- What battery storage is evidenced, and at what scope?
Not established from the public records reviewed.
- Does the applicable planning or connection policy require battery storage?
Not established from the public records reviewed.
- What a private wire is evidenced, and at what scope?
Not established from the public records reviewed.
- Does the applicable planning or connection policy require a private wire?
Not established from the public records reviewed.
- What gas supply or generation is evidenced, and at what scope?
Not established from the public records reviewed.
- Does the applicable planning or connection policy require gas supply or generation?
Not established from the public records reviewed.
- Does the published connection claim meet the policy applicable to its application date, location and agreement status?
Not established from the public records reviewed.
- Which checked country-grid sources and location-specific constraints apply to this connection?
No country-context relationship has been established for this record.
- Identify network and customer works, upstream reinforcement, land and wayleaves, taxes, fees, securities, contingency and the price base.
Connection-cost scope question.
- Resolve the energisation input: A dated, document-verified import-MVA rung for the assessed scope.
This missing input leaves an energisation bound unknown.
- Resolve the energisation input: An applicable duration from the evidenced stage to energisation, published by and matched to the observed site operator, rather than an offer-processing target.
This missing input leaves an energisation bound unknown.
- Resolve the energisation input: Connection-dependent reinforcement scope and completion dates
This missing input leaves an energisation bound unknown.
- Resolve the energisation input: Grid-works planning status and programme
This missing input leaves an energisation bound unknown.
- Resolve the energisation input: Applicable connection-policy conditions and programme
This missing input leaves an energisation bound unknown.
- Obtain a published complete connection scope with voltage, configuration and measured quantities.
This scope or reference gap prevents a complete indicative connection capex band.
- Establish that every necessary connection-work component is included in the published scope.
This scope or reference gap prevents a complete indicative connection capex band.
Use these questions to scope a Power Reality Check.
Request an assessment of this record and the evidence needed next. Share only public information or documents you are authorised to provide.
Request a Reality CheckEarlier capacity notes and source context
16 MW ITProject capacity
Overall FRA03 facility; phase 1 operating, phase 2 scheduled for 2026/27.
Published claimProject source recordImport rights and connection evidence
SPIE describes a regional renewable-power PPA and electrical/UPS installation. Neither proves FRA03 import entitlement; the 16 MW stated by the contractor is total IT design capacity.
IT load, facility demand, import capacity and equipment ratings retain their stated scope. A published figure does not establish spare or transferable supply.
Planning & utilities
5 of 10 categories contain evidence. Each status applies to its specific claim.
Grid & import rights
Partial evidenceSPIE describes a regional renewable-power PPA and electrical/UPS installation. Neither proves FRA03 import entitlement; the 16 MW stated by the contractor is total IT design capacity.
Sources & next check
Fibre & dark fibre
DocumentedCarrier-neutral facility with separate redundant carrier entry points.
Sources & next check
Land, footprint & access
Partial evidenceOperator gives 17,000 m² plot and 27,000 m² building area; the city places the planned Süwag heat-pump station on maincubes’s plot. Title and station rights remain unverified.
Sources & next check
Water, cooling & heat
DocumentedThe city confirms a signed Süwag/maincubes heat-use contract on 14 April 2026 and planned on-site heat pumps. Network construction was targeted from October 2026, with service in 2028.
Sources & next check
Programme & delivery
DocumentedOperator dates phase-1 completion to June 2026 and phase-2 completion to 2026/27. SPIE’s project announcement establishes technical works with Lupp responsible for building fit-out.
Sources & next check
Not assessed
Planning & decisionsLand-use zoningOwnership & development controlFlood, ground & environmentDemand & location fit
Evidence still needed
- Planning & decisions
A current planning decision, conditions and any appeal or court proceedings still need to be checked.
- Land-use zoning
The site boundary has not been matched to the current adopted zoning map and data-centre use policy.
- Ownership & development control
Legal title, land-owning entity, development-control route and restrictions need verification. A named developer does not establish availability.
- Flood, ground & environment
Flood risk, ground conditions, contamination, ecology, heritage, noise and air-quality constraints have not been fully assessed here.
- Demand & location fit
Customer geography, latency, cloud or exchange nodes and a supported use case need project-specific evidence; national growth alone is insufficient.
Project team
Appointments are limited to the project, phase and scope supported by each source.
Main contractor
Lupp GroupOther projects
FRA03 building fit-out works within the joint delivery arrangement with SPIE; no separate campus-wide contract inferred.
Appointment sourceSpecialists & vendors
SPIE Data Center GmbHOther projects
FRA03 technical installation contractor in a joint delivery arrangement with Lupp: cooling, MEP, BMS, fire systems and ICT; not a design-consultant attribution.
Appointment sourceSüwag Grüne Energien und WasserOther projects
FRA03 waste-heat partner and developer of the planned on-site heat-pump station and district-heat connection, under the April 2026 heat-use agreement.
Appointment sourceUnlisted roles have no project-specific appointment recorded.
Sources
Publication dates are shown where known. Review dates do not establish approval or commissioning.
- maincubes FRA03 — current facility and milestone pagemaincubes.com · Publication date unstated
- SPIE — FRA03 technical works and Lupp joint delivery scopespie.de · 26 Jun 2025
- Schwalbach — signed Süwag/maincubes heat-use contractschwalbach.de · 14 Apr 2026
Original documents and maps retain their rights. Public access does not grant commercial redistribution rights.