The percentage of the population that has access to electricity ranges from 18 per cent in PNG to 100 per cent in Samoa (Figure 9.4). A larger proportion of hydro power, for example in Fiji, is likely to reduce the electricity tariff, whereas a country that relies mostly on fossil fuels, such as Kiribati or Tuvalu, is more vulnerable to increasing oil prices. Another factor affecting the residential electricity tariff is whether it is subsidised through the Government budget, for example in Fiji, or using a cross subsidy from larger users of electricity, for example in Vanuatu. Each power utility in each country determines its tariffs differently.