How Long Does It Take to Fit Solar Panels? A Guide to the Installation Process

Switching to solar energy is an exciting step towards sustainability and lower energy bills. However, many homeowners wonder how long the installation process takes and what’s involved. Here’s a comprehensive guide to the timeline and steps to install solar panels on your property.

The Typical Timeline

The time required to fit solar panels can vary depending on factors such as the size of the system, the complexity of the installation, and local planning regulations. On average, the process takes:

  • Pre-Installation Planning: 2–6 weeks (depending on permits and approvals).
  • Actual Installation: 1–3 days.
  • Final Connection and Testing: 1–2 weeks after installation.

In total, you can expect the entire process to take around 4–8 weeks from start to finish..

The Solar Panel Installation Process

1. Initial Consultation and Assessment

The journey begins with an initial consultation. A professional installer will:

  • Assess your energy needs.
  • Evaluate your roof’s suitability, including size, angle, and shading.
  • Provide a detailed quote and system design.

This step ensures the installation is tailored to your home’s unique requirements.

2. Planning and Permissions

In most cases, installing solar panels in the UK does not require planning permission. However, exceptions include:

  • Homes in conservation areas or listed buildings.
  • Ground-mounted systems exceeding height and area limits.

If permission is needed, the process can add a few weeks. During this time, your installer will also handle grid connection approvals.

DNO Permissions and Panel Limits

Before connecting your solar system to the grid, permission must be obtained from your Distribution Network Operator (DNO). This is required to ensure the local grid can safely accommodate the electricity generated by your system. In the UK, most DNOs allow a maximum of 3.68 kW per phase (around 16 amps) without prior approval. This typically equates to around 4-5 standard solar panels, depending on their efficiency and wattage. Systems exceeding this size may require additional permissions, which can extend the timeline by several weeks. Your installer will handle this process, ensuring compliance with regulations while optimising your system’s capacity.

3. Equipment Procurement

Once the design is finalised, the necessary equipment, such as solar panels, inverters, and mounting systems, will be ordered. This step usually takes 1–2 weeks.

4. Installation Day

The installation itself is quick and efficient:

  • Step 1: Roof Preparation
    Mounting structures are secured to your roof to provide a stable base for the panels.
  • Step 2: Panel Installation
    Solar panels are attached to the mounting system and connected to the inverter.
  • Step 3: Electrical Wiring
    Your system is wired to your home’s electrical system, and a new meter may be installed to track energy production.

For most homes, this process takes 1–3 days.

5. Inspection and Connection

Within a week of installation, your system is inspected to ensure it meets safety and regulatory standards. Once approved, the system is connected to the grid, and you can start generating solar power.

Factors That May Affect Installation Time

  1. Roof Condition: Repairs or structural reinforcements may be required for older roofs.
  2. System Size: Larger systems with more panels take longer to install.
  3. Weather: Rain or high winds can delay installation.
  4. Access and Logistics: Difficult-to-access roofs or multi-storey properties may require additional time.

Why Choose Flux Solar Energy?

At Flux Solar Energy, we prioritise efficiency and transparency. Our expert team will guide you through every step of the installation process, ensuring a hassle-free experience.

Get Your Free Quote Today!