---
title: "DNO Approval: What It Means for You"
description: Discover what DNO approval means for your solar system. Learn why it’s required, how it affects export limits, and what it means for using and selling your energy.
---
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# DNO Approval: What It Means for You
## DNO approval is your official permission to connect solar and batteries to the grid. It sets your export limit, ensures safe connection, and is essential for registering export tariffs
### What is DNO Approval?
Your **DNO approval** is permission from your local **Distribution Network Operator (DNO)** to connect your solar (and battery) system to the electricity grid.
- The DNO manages the local cables, substations, and infrastructure in your area.
- Approval ensures your system won’t overload the network when it exports electricity.
Think of it as your “permission slip” to connect safely.
---
### Why is DNO Approval Needed?
1. **Safety First** – It prevents too much electricity flowing back into the local grid at once.
2. **Legal Requirement** – All grid-connected solar systems in the UK must be registered with the DNO.
3. **Export Control** – It defines how much electricity you’re allowed to export at any one time.
4. **Smooth Connection** – Without it, your system could be limited or even refused export.
---
### Types of DNO Applications
- **G98 (Smaller Systems)**
- Covers most domestic solar installs up to 3.68kW per phase.
- Usually just a **notification** after installation (no prior approval needed).
- **G99 (Larger Systems / Batteries)**
- Required if your system is bigger than 3.68kW per phase or includes a large battery.
- Needs **pre-approval** from the DNO before installation.
---
### What Does DNO Approval Tell You?
Your approval letter/email will confirm:
- Your system has been accepted for connection.
- Your **export limit** (the maximum you can send to the grid).
- Any conditions (e.g., a smart meter required, or system limited at 6kW export).
---
### How Does It Affect You?
- **Usable System Size vs. Export Limit**
- You can still use the full size of your system at home.
- The export limit only controls what flows out to the grid.
- Example: You install an 8kW solar system, but DNO approval sets a 6kW export limit. You can still generate and use all 8kW — only 6kW can be exported.
- **Tariff Eligibility**
- Energy suppliers may ask for proof of DNO approval when registering for export tariffs.
---
### FAQs
**❓ Who applies for DNO approval — me or Apex Doma?**
We handle the DNO application process for you as part of your installation.
**❓ Can export limits be increased later?**
Sometimes. You can request an upgrade from your DNO, but it may depend on local network capacity.
**❓ Does DNO approval affect battery storage too?**
Yes. Batteries that export to the grid are included in the approval.
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