Permitting design & documentation
for PV, BESS, and Substations
We prepare and structure the technical documents for preliminary building inquiries (preliminary decisions) and building permit applications – enabling you to clarify approval issues early and prepare your projects for approval.
Permitting design & documentation by greentech
Technical documents for the approval process – completely and coherently prepared
We support you in the approval process for a PV, BESS, or substation project by providing the necessary technical documents for your preliminary building inquiry and/or building permit application.
We structure these documents in a comprehensible, consistent manner, aligned with the planning regulations at the site.
This provides authorities and design professionals with the technical basis for a verifiable review – from site plans and design to construction and operating descriptions, and a structured compilation of plans, data sheets, and other appendices.
Services at a glance
A preliminary building inquiry (preliminary decision) typically aims to clarify individual approval questions early on.
The documents are focused accordingly and tailored to the specific question.
For a building permit application, the entire project is submitted ready for approval.
The documents for this must be complete, consistent, and verifiable.
Photovoltaics (PV)
Preliminary Building Inquiry:
Simplified site plan (in Germany scale 1:500) and preliminary plant design (arrangement, paths, fence, stations)
Site plan (analogous to development plan procedure), if required for undeveloped areas (in Germany §35 BauGB) or site-specific
Simplified construction and operating description including development, operation, and dismantling (short form)
Component/Key Data Overview (Main Components)
Depending on the question: initial classification/reference to glare, environmental, or fire protection issues
Building Permit Application:
Building permit layout design according to project specifications (incl. distances, building heights, GRZ/sealing as required)
Construction and operating description (complete) including operation-relevant aspects (e.g., green space maintenance, dismantling)
Site plan/plans and necessary sections/views (as required)
Data sheet/drawing appendix
Battery Energy Storage Systems (BESS) and PV expansion with BESS for co-location
Preliminary Building Inquiry:
Simplified site plan (in Germany scale 1:500) and preliminary design (containers, distances, access)
Site plan (analogous to development plan procedure), if required for undeveloped areas (in Germany §35 BauGB) or site-specific
Simplified construction and operating description (short form)
Component/Key Data Overview
Depending on the question: reference to fire protection and noise protection issues or existing concept statuses
Building Permit Application:
Layout/Area concept including necessary representations of distances, development, and fire department requirements (as required)
Construction and operating description (complete) including operating concept and dismantling
Plans (site plan, possibly sections/views) + data sheet appendix
Optional: technical integration of external contributions (e.g., fire, noise)
Substations (SS)
Preliminary Building Inquiry:
Simplified site plan and preliminary design/arrangement concept (transformer, switchgear, operating building, portal/connection)
Simplified construction and operating description (short form)
Component/Key Data Overview
Depending on the question: sketches/schematics for connection and development
Building Permit Application:
Arrangement/Area and height concept including required plan documents
Construction and operating description (complete)
Site plan/plans, possibly sections/views (as required)
Data sheet/drawing appendix
When should you commission greentech to compile the technical documents for a preliminary building inquiry or building permit application?
If you want to address approval issues technically soundly at an early stage
We prepare the documents for a preliminary building inquiry in such a way that the essential points are verifiably presented – focused on the specific questions that need to be clarified in advance.
If you need to create a consistent, well-prepared document package from many individual statuses
Especially during project development, technical information is often scattered across multiple documents, versions and stakeholders (plans, component data, concepts, expert reports). We bring everything together in a structured package, ensure clear revision status, and compile all attachments in a way that is easy to review.
If your project is to be brought to building permit readiness
For the building permit application, plans, construction and operating descriptions, and appendices must be available in an approval-ready, consistent form. We handle the technical preparation and structuring of the package.
If you are expanding your PV project with a BESS (Co-Location)
The expansion of a PV system with a BESS usually also requires approval from the building authority. We create the necessary design for the BESS or consolidate existing designs so that the overall project is coherently presented. Based on this, we fully compile the technical documents for preliminary building inquiries and/or building permit applications and coordinate the required appendices.
If a substation is being newly planned or expanded
We assist with the technical representation of arrangement, space requirements, building heights, development, and interfaces – as a basis for preliminary building inquiries or building permit applications.
If external verifications/expert opinions are to be commissioned and integrated efficiently
Based on clear documents, expert opinions (e.g., fire, noise, glare, soil, environment) can be prepared in a targeted manner and later cleanly integrated into the overall package.
If you need to respond to inquiries or additional requirements
We supplement the necessary detailed representations, update plan statuses, and keep descriptions and attachments consistent – so you can quickly provide follow-up information.
This creates a verifiable document package
Official communication and submission are handled by the authorized design professional. We provide technical content support and deliver the documents in a structured manner.
Kick-off & requirements clarification
Preliminary building inquiry or building permit application, specific questions, planning requirements
Input check
Development plan/§35, cadastre, development, specifications, existing design statuses
Design adoption or creation
PV, BESS, or substation as engineering basis
Creation of description and plans
Construction and operating description, site plan/drawings, appendices
Compilation & consistency check
Plan statuses, cross-references, attachment structure
Handover & coordination loop
Revisions for inquiries/additional requirements
Engineering from Project practice – for approval-ready documents
Experience from our own projects:
We know the requirements from project development not just "on paper," but from practical application in our own PV, BESS, and substation projects.
Interface competence:
We consider design/layout, construction and operating descriptions, and appendices together – so that documents remain internally coherent.
Technical depth, comprehensibly prepared:
We translate technical content into a verifiable structure that is comprehensible to authorities and design professionals.
Technical plausibility from an engineering perspective:
We check documents for internal consistency (e.g., space requirements, distances, building heights, development) and prepare them so that they are technically comprehensible and suitable for approval.
Questions & Answers
Frequently asked questions about building permit planning and the technical documents for preliminary building inquiries and building permit applications.
For which project types does greentech handle permitting design & documentation?
We support PV, BESS, and substation projects – including co-location or BESS expansions. Depending on the project status, we create and structure the technical documents for preliminary building inquiries (preliminary decisions) and/or building permit applications.
What does permitting design & documentation at greentech include?
We create and structure the technical documents for preliminary building inquiries and/or building permit applications – including plan documents, construction and operating descriptions, and the compilation of appendices. Official submission is carried out by an authorized design professional.
Do I absolutely need a preliminary building inquiry before the building permit application?
Not necessarily. A preliminary building inquiry is often used to clarify individual approval issues early on. Whether it is useful for your project depends on the location, the specific questions, and official requirements.
Can a preliminary building inquiry replace the building permit application?
Generally not. The preliminary building inquiry aims to address individual questions (preliminary decision), while the building permit application submits the entire project for approval.
What documents are typically required for preliminary building inquiries and building permit applications?
Often, they involve similar document types (plans, design, construction and operating descriptions, appendices). For a preliminary building inquiry, they are usually more focused and simplified; for a building permit application, they must be complete, consistent, and ready for approval.
What is a "site plan analogous to development plan procedure" – and when is it needed?
This refers to a site-specific planning document in Germany that represents the project using a standardized planning logic. It may be required, especially for privileged areas in undeveloped regions according to §35 German BauGB or depending on official requirements.
Can you represent PV and BESS (co-location) together in one document package?
Yes. We create the necessary design/layout planning for the BESS or consolidate existing designs and compile the technical documents so that the overall project is coherently presented.
Does greentech also handle the official submission of the building permit application?
No. Official submission and signing are carried out by authorized design professionals. We provide the technical document package and assist with technical contributions.
Can expert opinions (e.g., fire, noise, glare, soil, environment) be coordinated through greentech?
Yes, if desired. We support the technical integration and coordinate contributions to ensure that documents and appendices are consistently matched.
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Engineering & Technical Advisory
Here you can download an overview of our Engineering & Technical Advisory services:
Why work with greentech?
Years of experience
Employees active in 6 European countries
Projects in the development pipeline
Ground-mounted PV systems built
in technical consulting
in operational management
Your specialists for permitting design & documentation at greentech
Viola Hoffmann
Commercial Head of Engineering
As Commercial Head of Engineering at greentech, Viola Hoffmann is responsible for the commercial management of the engineering department. In her role, she connects technical project requirements with economic implementation – from offer and project costing to the further development of suitable commercial services within the engineering context. Viola Hoffmann has been active in the solar industry since 2017. She studied European Studies as well as International Business Administration and Politics (among others in the Netherlands and Copenhagen) and also brings experience from entrepreneurship and working in young, dynamic companies.
Johannes Liebich
Head of Engineering & Technical Advisory
Johannes Liebich ist Leiter des Teams „Engineering & Technical Advisory“ bei greentech. Er ist verantwortlich für die Planung und Umsetzung von Projekten, sowie die Entwicklung neuer Leistungen in der technischen Anlagenberatung. Johannes Liebich studierte Environmental Engineering mit dem Schwerpunkt Photovoltaik und ist seit 2011 in der Solarbranche tätig. Als erfahrener Technical Advisor liegt sein Schwerpunkt vor allem im Bereich Anlagenbau und -betrieb.
Jörn Carstensen
Chief Technical Officer (CTO)
In seiner Rolle als CTO bündelt Jörn Carstensen die Leitung aller technischen Bereiche der greentech Gruppe. Er ist verantwortlich für Anlagenbau, Engineering Services und Technisches Management. Ziel ist es, einheitliche Standards und Prozesse in allen technischen Bereichen bei greentech zu schaffen und so unternehmensweite Synergien, hohe Qualität und größtmögliche Transparenz sicherzustellen.
Jörn Carstensen kam 2014 als Business Development Manager zu greentech. Neben der Erschließung verschiedener europäischer Märkte baute er den Bereich Engineering & Technical Advisory auf. Von 2006 bis 2014 war er für die Conergy Group in verschiedenen internationalen Funktionen im Corporate und Business Development tätig. Zuvor arbeitete er für eine Beratungseinheit von Accenture und unterstützte Versorgungsunternehmen bei strategischen und organisatorischen Fragestellungen. Jörn Carstensen hat Wirtschaftsingenieurwesen mit Schwerpunkt Energie- und Umweltmanagement an den Universitäten Flensburg und Southampton studiert.
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