A social tariff is a discounted rate for energy services to eligible vulnerable consumers.

  • Criteria for eligibility is established and energy companies are required to provide the special tariff to consumers who meet the eligibility criteria.

  • The tariff can be designed around usage levels or other criteria like a percentage of the consumer’s income. The latter approach may vary if the consumer is a single person household, or the account holder for a large household.

  • While sometimes complicated for governments and energy companies to administer as they are restricted to a sub-set of vulnerable consumers, they are less distortionary than subsidising or capping tariffs for all consumers.

  • The level of a social tariff is sometimes set by an independent regulator or directly by a government.

  • Options include a discount against a standard tariff or a hard cap on what the vulnerable consumer can be charged based on estimated prices and usage.
Case study - Portugal

Extraordinary Social Support for the Energy Consumer (ESSEC) is a discount on an electricity or gas bill directly applied by the government to bills of eligible consumers. Eligible customers must make an application with their energy supplier to receive the ESSEC discount and the company checks the application with the relevant government agency.

Those customers eligible for the discounted tariff from their suppliers are:

  • The elderly, the unemployed, children and people with disabilities.

  • People receiving government social benefits or with an income below a legislated minimum.

  • Citizens with a contracted energy use of up to 4.6 KV of electricity and an annual threshold of gas usage per year.

In 2016, the number of Portuguese consumers receiving the tariff was estimated to be 630,000 with the discounts applied to the standard tariff amounting to 33.8% for electricity and 31.2% for gas.

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