Scottish and Southern

Millions of SSE customers on its standard tariff will see their energy bills jump from 28 April – the firm's hiking electricity prices by 14.9% and keeping gas prices steady, meaning those on a dual fuel tariff face an average 6.9% rise.

Many of the UK's four million households which prepay for their energy will see prices drop on 1 April when a new price cap comes into force, but savings will vary hugely and at least 200,000 customers will see an increase, new figures obtained by MoneySavingExpert.com reveal.

We've been shouting it till we're blue in the face - if you're on a standard tariff, fixing can save you £100s. For the 66% of you on one with a Big 6 provider it's doubly important you ACT NOW. First, their prices are set to rise. On Monday smaller player Ovo Energy sneaked out a 5% rise starting in Jan - others are likely to follow.

Big six energy firm Scottish and Southern Energy (SSE) is freezing its standard gas and electricity prices until at least April 2017. But if you're on its standard tariff, you can save £100s switching - and with the price of the cheapest deals on the market soaring in recent weeks, now's the time to act.

Customers who move to the cheapest energy tariffs are facing eye-watering price rises once those deals end, research has found. But you can stay one step ahead of these hikes by switching suppliers.

Embattled energy supplier Extra Energy has once again been ranked bottom of the Citizens Advice performance table after receiving a record number of complaints.

Concerns about energy provider SSE's approach to switching its customers – and particularly those in vulnerable situations – onto prepay meter tariffs has sparked an investigation by the energy regulator.

Co-operative Energy has blamed ongoing problems with its new IT system as the reason why it was the most complained about energy provider in the third quarter of the year.

Nottingham City Council has launched "Robin Hood Energy", which it says is the first council-owned, not-for-profit energy company to supply households across England, Scotland and Wales since nationalisation of the industry in 1948. But is it any good?

Co-op Energy was a customer service darling last December, with 63% of its customers rating it great and just 7% rating it poor. But in a staggering turnaround, just six months later over half of its customers (56%) rate its service as poor and just 22% rate it great.