Why a Topupmeter is Perfect for Your Granny Annex

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February 3, 2026
Dominic Clegg

Why a Topupmeter is Perfect for Your Granny Annex

Renting out a granny annex is great, but splitting utility bills fairly can cause headaches. Relying on estimates often leads to disputes or leaves you out of pocket. Installing a Topupmeter solves this instantly.

The Smart Sub-Metering Advantage

Setting up a separate grid connection is notoriously expensive. Topupmeters bypass this by acting as smart sub-meters, installed quickly and cost-effectively directly downstream from your main supply.

Hassle-Free, Fair Billing

  • Pay-As-You-Go: Lodgers pay in advance for exactly what they use via a convenient app—no cash or tokens required.
  • Complete Cost Recovery: Simply set the meter to match your own energy provider's tariff to recover your costs automatically.

Guest Comfort Guaranteed

Built-in safety nets like Friendly Hours (preventing overnight power loss) and Emergency Credit ensure your guests are never suddenly left in the dark, even if they forget to top up.

Ready to simplify your annex billing? Contact the Topupmeters team today to find the perfect prepay solution for your property.