Module 7: Permits, Grid Connection, and Regulatory Compliance
RETIE, grid connection with the Distribution Network Operator, registration with CREG and UPME, net-billing under CREG Resolution 174, and supplementary environmental permits.
5 hours Phase 2 · Build
By the end of this module
The participant will be able to:
- Describe the Colombian regulatory framework applicable to a community solar energy project (RETIE, CREG, UPME).
- Explain the registration and connection process with the Distribution Network Operator (OR) and its technical and documentary requirements.
- Differentiate the net-billing tariff schemes under CREG Resolution 174 of 2021 according to project size.
- Map the complete permit pathway for a 100 kWp rooftop solar project, from design through commissioning.
- Anticipate the most common obstacles in grid connection for Colombian community projects and propose mitigation strategies.
Session topics
Expand each topic to see the full content
1. RETIE: the electrical safety standard no project can bypass
RETIE (Reglamento Tecnico de Instalaciones Electricas) is the Colombian standard that establishes minimum technical safety requirements for all electrical installations in the country, including solar photovoltaic systems. No community energy project, regardless of size or social purpose, can legally connect to the grid without meeting RETIE, and non-compliance creates not only a risk of penalties but, more importantly, a real risk of fire, electrocution, and equipment damage.
RETIE requires that installations be certified by an accredited certification body and that the design, materials, and installation be carried out by qualified personnel (certified electricians with a professional license or certified technicians, depending on the risk level of the installation).
For a community leader without a technical background, the key point is not memorizing the detailed content of RETIE, but understanding that this certification is a non-negotiable requirement and must be budgeted from the start, both in time (weeks of processing) and in cost (certification body fees and any technical adjustments they may require). Hiring uncertified installers to save money is one of the most common causes of delays and cost overruns in community projects, because the work frequently has to be redone to meet the standard.
2. Connection with the Distribution Network Operator (OR): the actor that decides whether your project connects
The Distribution Network Operator (OR) is the company that manages the electricity distribution infrastructure in a given geographic area (for example, in many regions of Colombia, companies such as Air-e, Afinia, EPM, Enel-Codensa, or CEDENAR, depending on the location).
Before installing any self-generation system -- including a community solar project -- it is mandatory to request and obtain approval from the OR to connect to their grid. This process includes: assessing the grid capacity at that specific point (can the local grid absorb the energy the project will inject?), reviewing the electrical studies included in the application, and finally installing a bidirectional meter that records both energy consumption and injection.
This process can take anywhere from several weeks to several months depending on the OR, the region, and the project's installed capacity, and it is one of the stages where Colombian community projects face the most delays, partly because the OR's procedures are not always designed with community projects in mind (they tend to be built for large generators or small individual residential systems).
It is essential that the cooperative initiate this process as early as possible in the project timeline, rather than leaving it until the end, since it frequently becomes the bottleneck that determines the actual commissioning date.
3. Registration with CREG and UPME: who needs to know your project exists
Every power generation project in Colombia, including small-scale self-generation, has registration obligations with national entities.
CREG (Comision de Regulacion de Energia y Gas) defines the regulatory framework under which the project operates, and it is the entity that established, through Resolution 101 072 and subsequent refinements such as Resolution 174 of 2021, the rules for the small-scale self-generation and net-billing scheme.
UPME (Unidad de Planeacion Minero-Energetica) maintains a national registry of generation projects, and depending on the project's installed capacity, registration in this registry may be mandatory as part of national energy planning.
These registrations are not mere bureaucratic formalities: they serve the purpose of giving the national electricity system visibility into how much distributed generation exists in the country, which is relevant for grid planning. Eventually, proper registration also enables the project to access the tax benefits associated with Ley 1715 of 2014 (VAT exemption, income tax deduction, accelerated depreciation), which generally require the project to be duly registered and certified.
4. Net-billing under CREG Resolution 174: how the cooperative gets paid for its surplus energy
CREG Resolution 174 of 2021 established the net-billing scheme for small-scale self-generation in Colombia, defining how surplus energy injected into the grid by a self-generation project is valued when it produces more than it consumes at a given time.
Under this scheme, the injected surplus is credited on the generator's electricity bill at a rate that is generally lower than the end-user retail tariff, but significantly higher than under previous pure "distributed generation" schemes, making the model more financially attractive for collective self-consumption community projects.
It is important that cooperative leaders understand the difference between the collective self-consumption model (where several members share the benefits of the same generation system, each crediting their proportional share on their own electricity bill) and the centralized generation model with direct sale through a PPA. The CREG net-billing scheme is designed primarily for the former, and its correct application depends on the member registry and their participation shares (see Module 5) being well structured and communicated to the Distribution Network Operator.
5. Environmental assessment and other supplementary permits
Depending on the project's size and location, an environmental assessment or license may be required from ANLA (Autoridad Nacional de Licencias Ambientales) or the corresponding CAR (Corporacion Autonoma Regional). However, for community-scale rooftop solar projects (tens to a few hundred kWp), a full environmental license is generally not required; in some cases, a simplified process or even no additional obligation beyond municipal building and land-use regulations applies.
It is the project's technical team's responsibility to verify with the specific regional environmental authority what the applicable requirement is, as these vary depending on geographic location and type of terrain (rooftop versus ground-mount, for example).
Additionally, municipal building permits (urban planning office) may be required if the installation involves significant structural modifications, and in some cases, permits for the use of public or communal space may be needed if the project is installed on shared infrastructure (for example, the roof of a community hall or a school).
Mapping all these permits from the start, rather than discovering them along the way, is what distinguishes a well-planned project from one that faces constant delays.
International reference
What worked in another context and what is transferable to Colombia
Real-world grid connection challenges in Colombian community projects
A community organization in a rural municipality in a Colombian department sought to install an 80 kWp collective self-consumption solar system on the roof of an agricultural collection center, benefiting 15 farming families nearby.
The technical design and RETIE certification were completed without major issues in two months. However, the grid connection application to the Distribution Network Operator took more than seven months, primarily because the application form did not clearly accommodate the case of "multiple beneficiary users" under a single connection point, and the operator requested additional electrical studies to verify the capacity of the local transformer, generating costs that had not been budgeted initially.
The project was ultimately connected, but the delay meant seven additional months without generating income or savings for the participating families.
Discussion questions
- What actions could the organization have taken from the start of the project to reduce the risk of this delay?
- How could a community cooperative anticipate whether the local transformer has sufficient capacity before investing in the full project design?
- What role could cooperative federations or regional associations play in pressing Distribution Network Operators to standardize and streamline processes for collective self-consumption community projects?
Module deliverable
The output of this exercise feeds the cooperative's portfolio
Permit pathway mapping for a 100 kWp solar project
In working groups, participants build a flowchart (on paper, a digital whiteboard, or a provided template) that maps, in chronological order, all the steps needed to take a 100 kWp rooftop solar project from concept to operation, including:
- Preliminary technical design.
- Grid connection study with the OR.
- RETIE certification.
- UPME registration (if applicable based on capacity).
- Net-billing application with the OR under CREG Resolution 174.
- Municipal/environmental permits if applicable.
- Physical installation, final inspection, and commissioning.
For each step, the group must estimate: expected timeframe, responsible party (internal or external), and approximate cost.
Permit pathway map (diagram) adapted to the participant's own project, with actual progress status: which steps have already been completed, which are in progress, and which have not been started, with estimated dates.
Module rubric
The "Proficient" level is the minimum required for the graduation portfolio
| Criterion | Insufficient | Basic | Proficient | Outstanding |
|---|---|---|---|---|
| Permit pathway map for the participant's own project | The pathway map omits essential steps (e.g., does not include OR connection or RETIE) or lacks a logical sequence. | The map includes all major steps but without realistic time estimates or responsible parties, or with a sequence that does not reflect actual dependencies between procedures. | The map includes all steps, with reasonable time estimates and responsible parties, and correctly reflects dependencies (e.g., that the OR connection process must be initiated early due to its duration). | In addition to the Proficient level, the participant identifies the critical risk points for delay in their specific project and proposes concrete mitigation actions with a responsible party and timeline. |
Further reading
- RETIE -- Reglamento Tecnico de Instalaciones Electricas, Ministry of Mines and Energy
- CREG, Resolution 174 of 2021 -- Net-billing scheme for small-scale self-generation
- CREG, Resolution 101 072 -- Registration of minor plants and self-generators
- UPME -- Guide to generation project registration
- Ley 1715 of 2014 -- Tax benefits for renewable energy projects
Links point to the official website of the entity that issues each regulation or document, not to a specific file. Course-specific materials (templates, fact sheets, protocols, and translated guides) are not public: they are delivered within the program's LMS and during in-person sessions.