Simon Hans

@g__j What about why you lied in your response to @MoneySavingExp saying in April you only passed on the govt saving when you actually raised the base rate on iog vari as well, meaning you raised it then and now again 3 weeks later? Your iog raise meant a net discount of 1.2p not 3.5

Thank you YouGov for finally clearing this up. It’s one of the most common questions I get asked

@MoneySavingExp @g__j lied in his response there saying they didn’t increase IOg prices in April. They DID raise the base rate of IOG in April which is why it only got a net discount of 1.2p rather than the 3.5p/kwh discount from the government - because they raised the rate.

Affected Octopus customers have expressed their confusion and frustration at the situation. Here's what happened: moneysavingexpert.com/news/2026/04/o…

@MartinSLewis Firstly octopus only passed on less than half of the govt discount because they hiked prices in April at the same time. Now 2.5 weeks later they hike prices again extraordinarily with 10 days notice not 30 days like they’re supposed to. @g__j needs to be sacked.

Doesn't sound great, but just to be technical. Octopus Go is not a price capped tariff so it didn't move due to drop in Price Cap. It dropped due to the removal of some govt policy costs from energy bills (which is the same reason the cap moved but still they're separate). As its not priced capped and it is a variable tariff it is allowed to move the price as long as adequate notice is given. I'm afraid the only option is to ditch and switch elsewhere :(

@OctopusEnergy @FreddyFrost Octopus explain how you came to the conclusion that 10 days is reasonable notice

@FreddyFrost Hey there - for tariff changes we (and other suppliers) need to give reasonable notice, which doesn't have a specified timeframe.

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@OctopusEnergy @broomy_23 10 days is reasonable notice to you?

@broomy_23 Hey Jack, the rules on this have changed slightly - us and other suppliers now need to give reasonable notice for tariff changes rather than to a specific timeframe.

@g__j @OctopusEnergy we have received 10 days’ notice before price rises take effect. I don’t think that is reasonable notice under your Ts&Cs and I’m pretty sure condition 23 of OFGEM’s supply licence mandates 30 days’ notice rises. Understand the circs, but feels unfair tbh :(

@g__j why does @OctopusEnergy think it’s above @ofgem rules and not giving the required 30 days notice of changes to tariffs that leave customers worse off.

@sarah_go_green @OctopusEnergy Scumbag company . Under ofgem rules aren’t they supposed to give 30 days notice of such changes as well and they haven’t done that.

Intelligent @OctopusEnergy Go rates are back up to almost 7p. Still really cheap EV charging BUT the fixed is available still at 8p per kWh offpeak! No one knows what prices will be on 1st July or 1st October.

@octopusenergy @g__j what happened to the 30 days notice you’re supposed to give customers of tariff changes? You’ve broken your own rules

Add to the fact they’re bringing in the 6 hour cap whilst also throttling chargers they sold and installed so you can’t charge full speed in those 6 hours, how many more ways can @OctopusEnergy @g__j brazenly rip us off

So @OctopusEnergy @g__j firstly wouldn’t pass on the whole government discount to IOG customers but what they did pass on lasted a whole MONTH before jacking the off peak price back up again? @ofgem needs to investigate these scammers

Enormously happy to see @Costco @CostcoUK have brought back the Kirkland men’s heavyweight tees. It was a rare misstep to swap them for those godawful thin low gsm ones. Let’s hope they see sense and never get rid of them again. The GOAT of men’s basic cotton tees.

@g__j I think octopus need to trial a new ceo because you keep massively ripping off customers and not even trying to hide it anymore. Jacking up iog to 11.5p in order to drop it to 8p keeping the government saving for yourself. Worse than club card prices that

Octopus have long pushed for reforms to give people cheap electricity rather than *paying wind farms to switch off* so I’m pleased to see this but… trials are hugely ineffective. Permanent changes would mean you could buy an electric car, or a heat pump or batteries to use power when it’s cheap. Or build a data center, or hydrogen electrolysers or kilns or…. (Of course it’s not windy all the time but average elec costs would be much lower) These would all shift demand far more effectively than we will see in any trial. Indeed, trials could be pretty ineffective without this. The rejection of zonal was to favour generators but giving them certainty. Trials do the exact opposite for users. No certainty so consumers of electricity can’t invest. Which is a shame because an energy transition would see 6x more investment on the consumption side than the generation side, but that side bears far more uncertainty than generators, grids and networks. So - great to see all this “zonal by the back door” stuff - but why not make it permanent immediately so we can have confidence in investing in electrification, and why not go the whole hog and do zonal properly

So the government gives a 3.5p/kwh discount and @OctopusEnergy @g__j only pass on 1.8p/kwh of it. There is no way this can be legal @ofgem . Literally stealing from customers

@g__j @abzpaul @OctopusEnergy @g__j you’re an outright scammer. Hiking the iog prices just before the govt savings come in to keep more for yourself. Disgusting behaviour and you’re not even trying to hide the scummy behaviour anymore.

During price change periods a team of people work astonishingly long hours, trying to keep prices as low as possible (I know - I send them back time and again to deliver the best value possible). It’s hard enough at the best of times but right now costs are very high - and swinging wildy. Even if we wanted to time stuff to be sneaky we couldn’t. Reality is it’s a load of people brutalising themselves to try to give customers the best we can against the backdrop of a maelstrom

Very crafty by @OctopusEnergy to increase their Fixed rate deals for IOG before they email their Variable Rate customers of their new rates. I asked them about fixing the other day (5.45p) and was told to wait for my variable deal. It came through at 5.2p but fixed is now 8p!

So @OctopusEnergy jacked up the off peak iog rate from 7p to 11.5p/kwh days before April so that they can say they’ve given the govt discount bringing it ‘down’ to 8p/kwh. Scammers @g__j isn’t even trying to hide the scam anymore. @ofgem @MartinSLewis this needs investigating

@g__j What is horseshit is how you ramped up your tariff prices by 2p just before announcing in the government 3.5p discount to secure more of it for yourself rather than customers you scammer

Gas boilers are not 95% efficient (in the real world they’re lucky to be 85)… Great to see the reception to our unique transparent dashboard showing the real world performance of all Octopus Cosy Heat Pumps installed in customers’ homes. Of course, some people who like burning stuff are always looking for “gotchas”. One of the most common is the assertion that “modern gas boilers are 95% efficient” This is horseshit. Just like cars hardly ever deliver the official miles per gallon figures, so boilers underperform too. Whilst an A rating boiler does indeed achieve 92% in lab tests, in the real world 80-83% efficiency is the norm for an “efficient” gas boiler (and older ones are much worse. Like 70-80%). There’s surprisingly little investigation into this - but here’s an official field study assets.publishing.service.gov.uk/media/5a75149b… If you’re interested - a condensing boiler typically needs to be set to 50 degrees - it then needs a return temperature of 30 degrees to ensure proper condensing - and needs to be running long enough to get into condensing mode —> characteristics pretty similar to a traditional heat pump in its most efficient mode! For which heat pumps are slammed by fossil fuel lovers. - it also needs thermostats set correctly and to be right-sized for a property whilst most are oversized Of course, if any boiler manufacturer wants to put their full fleet online so we see the real world data, we could compare to Octopus’s Cosy Heat Pumps. Being generous to boilers, if they have a typical efficiency of 0.85 and a real world Cosy has efficiency of 3.7, an Octopus heat pump is 4.35 times more efficient. With electricity being about 4.3 times more expensive than gas after April, this makes a heat pump cheaper to run. But a heat pump can use smart tariffs to access cheaper electricity, so it’s typically quite a lot cheaper to run - the real world data says someone on a heat pump has electricity at a 3.7 multiple per unit vs gas - so will be paying 17% less on average to use a heat pump than they would a gas boiler. Even more so if you can terminate the gas supply and save the standing charge (once you have a heat pump, you can get an induction hob and ditch the gas hob..) - another £130 annual saving from using a heat pump. Octopus’s huge investments in R&D and manufacturing are bringing costs down all the time, and you can see why the fossil industry is scared. Like canal owners looking at trains in the 19th century… Of course - Scandinavia’s already there. Norway is a huge gas producer but heat pumps are their dominant heating, whilst only 5% of homes have gas.

@sarah_go_green Octopus raise price by 2p just before announcing the government cut locking more in for themselves. Shameful scamming they need to be investigated

Standby those who took the IOG fixed at the same time as me last week. Tom's rate has gone down to 4.5p per kWh for the offpeak. It sounds like emails are coming out. Standby and it would be cool to hear what you've got.

I think @OctopusEnergy and @g__j need investigating by @ofgem for hiking up the prices such as IOG by 2p immediately before announcing a 3p cut for govt savings, locking more of it in for them and not the customer. Shameful scamming

@JimHigham @OctopusEnergy @ernmander Octopus iog

@Superhands132 @OctopusEnergy @ernmander Mine hasn’t gone up by 7%. Are you with octopus energy or another company. What specific tariff?

Mmm just fixed my prices with @OctopusEnergy and the fixed price is more expensive than my last fixed price with them. I won’t see a drop but a raise in prices

@OctopusEnergy @ernmander This doesn’t address the fact you raised your prices by 7% just before the government lower prices by 7%. You’ve taken all the savings for yourself.

@ernmander Hey there, everyone will benefit from the policy cuts in April. Our CEO, Greg explains more here: youtube.com/watch?v=Cejna2…