# Tariffs & Terms

All about our electricity tariffs, prices, contract period and more.

## SimplyFair

All about the SimplyFair tariff – a variable electricity tariff with transparent pricing, no minimum contract period, and a 2-week termination notice.

- [What is SimplyFair and how is my electricity price calculated?](https://support.ostrom.de/en/articles/7019564-what-is-simplyfair-and-how-is-my-electricity-price-calculated)
- [Is there an electricity price guarantee?](https://support.ostrom.de/en/articles/7019576-is-there-an-electricity-price-guarantee)
- [How is the monthly deposit calculated in the SimplyFair tariff?](https://support.ostrom.de/en/articles/7019586-how-is-the-monthly-deposit-calculated-in-the-simplyfair-tariff)
- [How and when is electricity billed in SimplyFair?](https://support.ostrom.de/en/articles/11656005-how-and-when-is-electricity-billed-in-simplyfair)

## SimplyFair12

Everything you need to know about your 12-month tariff with stable prices!

- [SimplyFair12 - Everything you need to know](https://support.ostrom.de/en/articles/13045177-simplyfair12-everything-you-need-to-know)
- [What is the difference between SimplyFair and SimplyFair12?](https://support.ostrom.de/en/articles/13045185-what-is-the-difference-between-simplyfair-and-simplyfair12)

## SimplyFair24

Everything you need to know about your 24-month tariff with guaranteed prices!

- [SimplyFair24 - Everything you need to know](https://support.ostrom.de/en/articles/15013577-simplyfair24-everything-you-need-to-know)
- [What the difference between SimplyFair and SimplyFair24?](https://support.ostrom.de/en/articles/15013515-what-the-difference-between-simplyfair-and-simplyfair24)

## SimplyDynamicMonthly

Dynamic electricity prices – your transition tariff, even without a smart meter!

- [What's the difference between SimplyDynamic Monthly and SimplyDynamic?](https://support.ostrom.de/en/articles/15554650-what-s-the-difference-between-simplydynamic-monthly-and-simplydynamic)
- [What is the SimplyDynamic Monthly tariff?](https://support.ostrom.de/en/articles/13543958-what-is-the-simplydynamic-monthly-tariff)

## SimplyDynamic

Everything you need to know about the SimplyDynamic tariff: hourly prices from the electricity exchange, requirements, and how billing works.

- [What's the dynamic SimplyDynamic tariff?](https://support.ostrom.de/en/articles/8100429-what-s-the-dynamic-simplydynamic-tariff)
- [Where can I find the spot market price?](https://support.ostrom.de/en/articles/8238892-where-can-i-find-the-spot-market-price)
- [What are the terms (prices) for the SimplyDynamic tariff?](https://support.ostrom.de/en/articles/9805818-what-are-the-terms-prices-for-the-simplydynamic-tariff)
- [What’s the difference between the SimplyFair and SimplyDynamic tariff?](https://support.ostrom.de/en/articles/8238744-what-s-the-difference-between-the-simplyfair-and-simplydynamic-tariff)
- [When will I receive my SimplyDynamic invoice?](https://support.ostrom.de/en/articles/11651355-when-will-i-receive-my-simplydynamic-invoice)