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Free tools · From NERSA’s 2026/27 decision · Northern Cape

How many units for R100 in Ubuntu?

R100 buys 39.9 kWh of prepaid electricity in Ubuntu at the start of the month, VAT included, on Ubuntu’s prepaid tariff for homes, 1. Domestic prepaid. There’s no fixed charge, so all of your money buys units. Units cost more as the month goes on: once you’ve bought 350 kWh, R100 buys 22.1 kWh.

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What R50 to R1,000 buys in Ubuntu

1. Domestic prepaid39.9 kWhfor R100 at the start of the month

Units (kWh) for each amount, VAT included. Start of month: your first units of the month. After 350 kWh: once you’ve bought 350 kWh this month.

You payStart of monthAfter 350 kWh
R5020.011.0
R10039.922.1
R20073.244.1
R300104.366.2
R500166.4110.3
R1,000321.6220.6
Units this monthPrice a unitR100 buys
First 50 kWhR2.5039.9 kWh
50 to 350 kWhR3.2231.1 kWh
350 to 700 kWhR4.5322.1 kWh
700 to 1,000 kWhR5.3418.7 kWh
Above 1,000 kWhNo rate

No fixed charge: all of your money buys units. The decision prints no rate above 1,000 kWh, so amounts that reach there aren’t priced (No rate). The decision doesn’t say whether its tariffs include VAT; 15% added, as municipal tariffs are usually quoted without it. Source: NERSA decision, page 18.

Why the same R100 buys less later in the month

On this tariff, Ubuntu sells electricity in blocks that start again on the first of every month. The first 50 kWh each month cost R2.50 a unit, VAT included, and the price goes up in steps after that, to R5.34 a unit from 700 kWh.

So R100 buys 39.9 kWh at the start of the month, but only 22.1 kWh once you’ve bought 350 kWh that month. Splitting your purchases doesn’t change this: the blocks count every unit you buy in the month, however you buy them.

Elsewhere in the Northern Cape

Units for R100 at the start of the month, VAT included.

Source: NERSA decision, page 18, Ubuntu’s tariffs for 2026/27, from 1 July 2026. Worked out for November 2026. In parts of most municipalities, Eskom supplies homes directly.

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