Permitting design & documentation
for PV, BESS, and Substations
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
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)
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
Building Permit Application:
Substations (SS)
Preliminary Building Inquiry:
Building Permit Application:
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
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
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
If external verifications/expert opinions are to be commissioned and integrated efficiently
If you need to respond to inquiries or additional requirements
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
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
Compilation & consistency check
Handover & coordination loop
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:
Technical depth, comprehensibly prepared:
Technical plausibility from an engineering perspective:
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?
What does permitting design & documentation at greentech include?
Do I absolutely need a preliminary building inquiry before the building permit application?
Can a preliminary building inquiry replace the building permit application?
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?
Does greentech also handle the official submission of the building permit application?
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.
Still have questions?
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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
Johannes Liebich
Head of Engineering & Technical Advisory
Joern Carstensen
Chief Technical Officer (CTO)
In his role, Jörn Carstensen combines the management of all technical areas of the greentech group. As CTO, he is responsible for plant construction, engineering services and technical management. The aim is to create uniform standards and processes across all technical areas at greentech, thereby ensuring company-wide synergies, high quality and the greatest possible transparency.
Jörn Carstensen joined greentech in 2014 as Business Development Manager. In addition to developing various European markets, he built up the Engineering and Technical Advisory division. From 2006 to 2014, he worked for the Conergy Group in various international corporate and business development positions. Prior to that, he worked for a consulting unit of Accenture and supported utility companies in strategic and organisational issues. Jörn Carstensen holds a degree in Industrial Engineering with a specialisation in Energy and Environmental Management from the Universities of Flensburg and Southampton.
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