If you’re planning a solar panel or battery installation in the UK, understanding your DNO application is very important.
Most people treat the DNO process as simple red tape, but your local DNO (Distribution Network Operator) ultimately decides how much solar you can export, and whether your system will actually deliver the financial returns your expecting.
So what is a DNO application? What does DNO meaning actually refer to? And most importantly, who is my DNO, and how do I find my DNO before installing solar panels or a home battery system?
Your DNO is responsible for managing the local electricity grid, and any solar PV or battery systems capable of exporting energy must be approved by them before installation, in most cases. Getting your DNO electricity connection wrong can lead to export limitations, additional upgrade costs or even forced system redesigns later down the line.
Spirit Energy now offers a standalone DNO application service where we handle the full submission on your behalf, including all communication with your local DNO and interpretation of your connection approval results.
Request a quotation from Spirit Energy: https://www.spiritenergy.co.uk/request-quote-or-advice?
Watch on of our client’s solar journey which shows the process of getting solar from point of enquiry through to the design, survey, modelling, project management, installation, and handover: https://youtube.com/playlist?list=PLYJBYT3S7zDtOfVhCJEy1PFzEuI1g0OXy&si=wqd90WxSw8YrOrXe
00:00 Why the DNO application matters to system performance and payback
00:27 What this video covers and common mistakes to avoid
01:15 What a DNO application is and when it is required
02:06 What the DNO actually assesses (inverter rating and export potential)
02:33 Key thresholds: 3.68 kW per phase and when permission is needed
03:37 Inverter capacity vs export limit explained
04:09 Tip 1: DC-coupled vs AC-coupled systems for larger installs
04:51 How solar export affects grid voltage and why limits exist
05:50 Why grid capacity is effectively first come, first served
06:59 DNO lead times and risks of installing before approval
08:11 Reapplying for more capacity and when it is worth doing
09:53 Tip 2: choosing equipment that allows future expansion
10:51 Conclusion and how Spirit Energy can handle the DNO application
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