Understanding Net Metering in the UK (Smart Export Guarantee Explained)
The UK does not use traditional net metering. Instead, homeowners with solar panels are paid for excess electricity through the Smart Export Guarantee (SEG).
It works differently from net metering — but it still helps you earn money from unused solar power.
What Is “Net Metering” (And Why It’s Different in the UK)?
In countries like the US, net metering lets homeowners send excess solar energy to the grid and receive bill credits at the same rate they pay for electricity.
In the UK, this system was replaced.
Instead, we use the Smart Export Guarantee (SEG).
What Is the Smart Export Guarantee (SEG)?
SEG allows UK homeowners to:
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Export unused solar electricity to the grid
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Get paid per unit (kWh) they export
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Receive payments from their energy supplier
You don’t “bank” electricity — you sell it.
How SEG Works
1. Your Solar Panels Generate Electricity
Your home uses solar power first.
2. Extra Energy Is Exported
If your system produces more electricity than you need, the surplus flows to the grid.
3. You Get Paid for Exports
Your smart meter records exported electricity.
Your supplier pays you based on their SEG rate.
Payments are usually:
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Quarterly
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Paid in cash or bill credit
How Is SEG Different from Net Metering?
Net metering (not UK):
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Credits offset your electricity bill
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Same rate as import electricity
SEG (UK system):
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Paid separately for exports
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Export rate is usually lower than import rate
This makes self-using solar energy more valuable than exporting it.
Why SEG Still Matters
1. Reduces Overall Energy Costs
Even modest export payments improve solar returns.
2. Increases Solar ROI
SEG adds income on top of bill savings.
3. Encourages Smart Energy Use
Using power during the day or adding a battery increases value.
Who Can Get SEG?
To qualify, you usually need:
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Solar panels installed by an MCS-certified installer
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A smart meter
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Registration with an SEG-paying supplier
Most major UK suppliers offer SEG tariffs.
Should You Rely on SEG for Savings?
No — and this is important.
SEG is a bonus, not the main benefit of solar.
Most savings come from:
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Using your own electricity
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Reducing grid imports
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Adding battery storage
Export payments improve payback but shouldn’t drive the decision alone.
Final Verdict
The UK doesn’t have net metering — but SEG still rewards solar owners.
The best strategy is:
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Use as much solar energy as possible
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Export what you don’t need
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Get paid for the excess
Key Takeaway
In the UK, solar savings come from using your own energy first
SEG simply makes the surplus worthwhile.
