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Estimated Annual Bill FAQs

What is an EAB?

EAB stands for "Estimated Annual Bill". It is a simple indicator that customers can use to compare and contrast tariffs from the same Supplier or between different Supplier tariffs. In a nutshell, it allows customers to compare “apples with apples”.



Is the Estimated Annual Bill calculated at a Customer Level or a tariff level?

The EAB is calculated at a tariff level. In PrepayPower we have 5 different tariffs and subsequently each has its own EAB. The EAB is not a calculation of your specific usage or usage history.



Is the Estimated Annual Bill exactly what I will pay for a year in energy costs?

No, as the name suggests, it is an estimated value based on the CRU’s typical annual consumption figures for gas and electricity. You may pay more or less than this typical rate depending on your energy use.



How does PrepayPower Calculate the Estimated Annual Bill?

(a) For electricity we calculate as follows:

The estimated annual bill for Nightsaver tariffs is calculated assuming 62% of electricity is consumed during the day and 38% is consumed at night.

(Unit Rate x CRU typical annual electricity consumption value) + (Standing Charge + Service Charge + PSO) x 365



24 H Unit Rate 

Day Unit Rate

Night Unit Rate

Peak Unit Rate

CRU Typical Annual Elec Consumption Value 

 Standing Charge

Service Charge 




24 Hr Urban Standard  38.11c          4,200 kwh   €1.0117   45.04c -41.64c  €2,001.11 €2,181.21
24 Hr Rural Standard  38.11c          4,200 kwh    €1.3221   45.04c -41.64c  €2,105.05 €2,294.51
Urban Nightsaver Standard    42.20c 20.84c      4,200 kwh    €1.3471   45.04c -41.64c  €1,944.33  €2,119.32
Rural Nightsaver Standard   42.20c 20.84c      4,200 kwh    €1.5942   45.04c -41.64c  €2,027.10  €2,209.54
Urban Time of Use Day/Night/Peak   42.16c 21.86c 47.38c    4,200 kwh   €1.0117   45.04c -41.64c  €2,003.62  €2,183.94
Rural Time of Use Day/Night/Peak   42.16c 21.86c 47.38c    4,200 kwh    €1.3221   45.04c -41.64c  €2,009.39  €2,190.23

Where price includes VAT, above, this is calucated at 9%. *The current daily standing charge reflects the Public Service Obligation (PSO) Levy refund of €89.10. Customers will be refunded through a reduced daily standing charge from March 1st until the end of the current Tariff year on September 30th, 2023.  The daily charge for the 2023-24 Tariff year (starting October 1st) will be set in July when the Commission for Regulation of Utilities (CRU) determines whether to restore the PSO Levy or issue another PSO refund. 


(b) For gas we calculate as follows:

((Unit Rate + Carbon Tax) x (CRU typical annual electricity consumption value)) + (Standing Charge + Service Charge) x 365

Tariff Unit Rate* Carbon Tax* CRU Typical Annual Gas Consumption Value Standing Charge* Service Charge* EAB (incl. VAT*) EAB (ex. VAT)
PrepayGas  14.27c   0.96c  11,000 kwh  43.00c  19.42c €1,744.62 €1,902.03

* Price includes VAT at 9%


What is the CRU published Typical Annual Electricity Consumption Values for gas and electricity?

Year  Gas Elec
2017/2018 11,000 kWh 4,200 kWh

All Participants (suppliers) in the Electricity and gas industry will use these industry indicative values to calculate their EAB.