Clare Casalis

Senior Energy & Utilities Analyst

Clare joined MSE in September 2021 after a career as a chartered accountant. She started out as a writer on MSE's Money team, exploring everything from student loans to pensions, before moving across to the Energy and Utilities team in November 2022.

As Senior Energy and Utilities Analyst, Clare is responsible for the quarterly Price Cap updates to our guides, and the daily updates to our popular Should I fix my energy? guide, which explains if it's worth fixing your energy tariff, as well showing the current energy deals available. Clare also helps out on the Cheap Energy Club.

Clare has written several new guides, including Heat pumps explained, Is solar battery storage worth it?, How to switch your energy and, most recently, Winter Fuel Payments.

Outside of work, Clare's passionate about travel and embarks on global adventures with her family as often as she can (on a budget of course!). She also loves running and yoga to keep a healthy body and mind.

Latest from Clare Casalis

28 April 2026

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If you're in one of the 65% of homes in England, Scotland or Wales on a standard variable tariff, the price you pay is controlled by the Energy Price Cap. Yet the Cap changes every three months, so it's important to know what's likely to happen in future and how it affects your bill.

28 April 2026

eSims have been around for more than a decade, but it's only recently they've become more widely available in the UK. Yet most UK firms still don't fully support them. Where they really shine is if you're planning a trip abroad. We take you through what an eSim is, how you can get one and whether it'll save you any money below – plus how to install one on an iPhone or Android mobile.

28 April 2026

Average annual energy bills will fall by 7% on 1 July for those on standard price-capped tariffs (most households). But should you stay on the Price Cap, or move to a fixed deal? We've help to decide if fixing is right for you, plus analysis of the tariffs we've spotted...

27 April 2026

23 April 2026

23 April 2026

Energy suppliers are again offering tariffs aimed at electric vehicle owners. If you're one of the million EV owners in the UK, should you go for one? This guide helps you decide if they're worth it.

23 April 2026

Water is the forgotten utility – many think they can't save, but we've seen successes from those who have slashed £100s off their bills by fitting water meters and cutting down on how much they use. Plus there's help for those struggling... we round up all the ways to cut costs in this guide.

21 April 2026

There's lots of financial help available right now due to the cost of living crisis, as well as ongoing support for those on benefits. There's cash available to increase your home's energy efficiency or help you pay your energy bills – hundreds of millions of pounds of it. The key is knowing where to look.

20 April 2026

An Economy 7 tariff gives a cheaper electricity rate at night and a more expensive one in the day. These tariffs are mainly for those who use night time storage heaters to heat their home and water. Done right, it can save you money. Done wrong, it can cost you more.

20 April 2026

Under the Warm Home Discount scheme, you could get £150 off your electricity bill each winter. We've full info below on who qualifies, if you need to apply, and when it's paid.

20 April 2026

Attitudes and behaviours are changing and many are opting to go greener. In normal times, switching to a green energy tariff is easy, and can also save you money. Yet the recent energy market crisis means that very few 'green' tariffs are available right now. What's more, some of the green energy claims made by suppliers are now under scrutiny. This guide explains what green energy is and why it is a hot topic for debate right now.

20 April 2026

There is a potentially unbeatable opportunity everyone aged 40 to 73(ish) needs to consider. If you're missing national insurance credits, you can buy back up to six years. This can be prove very lucrative, as some are on course to make over £50,000 in boosts to their State Pension by following this guide.

14 April 2026

£1 coins lying on top of 'HM Revenue and Customs' headed letters.

14 April 2026

If you've got solar panels, make sure you have a Smart Export Guarantee (SEG) tariff [SHOULD WE IF YOUVE HAD THE MINSTALLED FROM 2020/AFTER JAN 2020?]. It lets you earn money by exporting excess electricity you generate back to the grid. But not all SEG rates are equal – some energy suppliers offer far better rates than others, so it's key you get the best deal.

14 April 2026

While energy costs are down from the horrifying levels we saw during the energy crisis, many are still struggling to pay their bills. Cutting energy use is a one key way to save. We've rounded up a full list of tips to help, including simple changes to your boiler and appliance settings, mixed in with some thrifty crowd-sourced wisdom.

14 April 2026