Flex Family Happy Gas
Estimated bill
≈ €155.16 / month
Taxes included
Supplier share: €75.81/month, before taxes
€1,861.89 / year
At 1,400 Smc/year
≈ 0.5812 €/Smc using average PSV 0.5012
Markup on the market price
Standing charge
Fixed supply charge
Annual usage × unit price + supplier standing charge + network charges, levies and taxes. For variable offers we use a shared PSV reference of 0.501205 €/Smc (12-month average, 2025-10/2026-09), which may differ from the contract’s index. Monthly spending is the annual estimate divided by 12, not a winter bill.
Estimates include network charges, system levies, excise and VAT. Supplier unit prices and standing charges are shown before these additions.
Availability & signup
Check availability at your supply address.
Check whether your activation or supplier change is eligible.
Confirm local availability, eligibility and activation terms with the seller.
Payment: Bank direct debit, Card direct debit, Postal direct debit, Pre-filled payment slip, Other methods
Signup channel: All channels
Sign up by Nov 25, 2026; this is not the price expiry date.
Offer terms
Full offer text
Offer for residential customers who hold a natural gas supply site.
Free activation
Source & dates
Source accessed on Oct 31, 2026.
Offers current as of Nov 2, 2026.
Offer code: 041219GSVML01XX000000000000HAPPY
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