--- title: "WhenToPlugIn - Reviews, Revenue and Downloads in United Kingdom | Apple App Store" description: "The app shows you the live carbon intensity forecast in Great Britain, letting you know when the electricity in your home will be cleanest over the next 48 hours to help you plan your electricity usag" --- # WhenToPlugIn — United Kingdom > NationalGrid GB ![WhenToPlugIn App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/48/62/45/486245f3-7dfb-4f51-29b1-25d4fa034cea/AppIcon-1x_U007emarketing-0-5-0-85-220-0.png/434x0w.png) **Developer:** [National Grid](https://apptail.io/developer/national-grid-ifVb) **Category:** Utilities **Rating:** 3.5/5 (38 ratings) **Price:** Free **Bundle ID:** com.nationalgridgb.rn **Store:** Apple App Store **Country:** United Kingdom **Version:** 2.0.11 (released 2024-04-02) **Original Release:** 2021-07-20 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/gb/app/app/id1576815985) **AppTail Page:** [https://apptail.io/app/whentoplugin-BLz/united-kingdom](https://apptail.io/app/whentoplugin-BLz/united-kingdom) ## WhenToPlugIn Description The app shows you the live carbon intensity forecast in Great Britain, letting you know when the electricity in your home will be cleanest over the next 48 hours to help you plan your electricity usage.  The app also offers a full breakdown of the energy sources powering the electricity in your region, shows you about the interconnectors that connect us to the electricity systems of neighbouring countries, and provides live updates as new clean energy records are broken too! It is powered by carbonintensity.org.uk, the carbon intensity forecasting tool built by National Grid ESO, The Environmental Defense Fund Europe, The University of Oxford and WWF, which also powers National Grid’s Green Light Signal bulb. It also draws from electricitymap.org to pull in interconnector information. Helping to get Great Britain to net zero Increasingly, we’re getting more and more of our electricity from renewable sources, which is great news for Great Britain and the planet. But when the wind isn’t blowing and the sun isn’t shining, we rely more on fossil fuels to generate electricity. National Grid wants to get Great Britain to net zero faster, so we created this app to show you in real time when the electricity coming into your home is generated by zero carbon sources such as wind, solar and nuclear. Because the cleaner the energy, the lower the carbon intensity, which is better for the environment. What is carbon intensity? The carbon intensity of electricity is a measure of how much carbon dioxide (CO2) emissions are produced per kilowatt hour (kWh) of electricity consumed. Fossil fuels have a high carbon intensity as they produce more CO2. Renewables such as wind or solar produce no emissions, so their carbon intensity is zero. Use the app often to help guide your energy usage. When your region is being powered by cleaner energy, if you want to charge you electric vehicle or put on a hot wash you can now feel positive that your electricity is powered by clean energy. About National Grid National Grid is the company that owns and maintains the major infrastructure that transports gas and electricity across Great Britain.  You can think of this major infrastructure as the motorways of pipelines and cables (on pylons and underground) that transmit gas and electricity from where it is imported or generated to the local distribution networks. ## WhenToPlugIn Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/e8/ea/98/e8ea98d4-4de6-65f5-8f03-cf1642327b59/8b24bbc6-478e-4460-ba96-c4dd3da20851_screen1.jpg/1242x2688.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/44/e2/19/44e219de-87c9-e2dc-1d4c-49657cce100a/62af2034-1e2d-486d-9bed-432f97cf99a3_screen2.jpg/1242x2688.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource115/v4/29/6d/9d/296d9d43-6c83-5102-fef5-c1b8630100e7/315d2da3-3a36-4171-b1aa-0aa1fb765d6f_screen3.jpg/1242x2688.png) ## WhenToPlugIn Rating Breakdown in United Kingdom - 5 stars: 17 (45%) - 4 stars: 3 (8%) - 3 stars: 8 (21%) - 2 stars: 3 (8%) - 1 stars: 7 (18%) ## WhenToPlugIn Reviews in United Kingdom ### ****- "Nice idea, but different figures in nso app" The figures for East Midlands are slightly different in the two apps,why? -- antiland old jake, 2024-09-24 ### **--- "What happened?" Used to like this - but it has stopped working on my phone (at least). Tried deleting and reinstalling but zilch, nowt, nothing. Just goes round and round in an enigmatic fashion. -- 1s9j5r6, 2024-01-23 ### ***-- "Not "100%" Does not include French nuclear" I am disappointed that the app does not appear to include 100% of generation sources. It appears to include Renewables, Nuclear and Hydrocarbons/Gas, but does not attempt to analyse Imported Electricity. The South East of England and London will get much of their power from the six 900MWe PWR units in Gravelines (Dunkerque), France, just across the Channel. Nuclear generated power is transmitted across the Channel in an interconnector. But the total off-peak power sources are a mysterious +/- 60%. So what happened to the other 40%? Like another reviewer, I find it inconvenient to get up in the middle of the night to put on a fast spin, then again to load the tumble drier, when in fact it is likely there is little gas used if any after 10pm and before 6am weekdays. So I just use my common sense, switch on dishwasher and start the washing machine at 10pm and load the tumble drier at 6am. -- Koeberg1601, 2024-01-06 ### ***-- "Where’s hydro power?" App seems ok, only used briefly so far. Disappointed that hydropower not included in the mix. -- Redbadger6, 2024-01-04 ### ***-- "Good idea, Currently isn’t displaying predictions in SE" Currently isn’t displaying predictions in SE Fix it please 🙏 Be nice if there was a in app feedback form -- Petersbache, 2023-10-20 ### ***** "Great App" Great that we know best times to use our appliances with high footprint -- Douye Victor, 2023-09-16 ### ***** "Two stools" Lovely UI, compared to the NG ESO app. But as another user points out, all one really needs isa widget with the next plug in time ( and possibly a green light for low carbon now ). I’ll stick with that, as it has the link to the detailed forecast, which lets me make granular decisions ie 5% decrease if I run the dishwasher in an hour, even if it’s not low carbon. -- All pigs fed and ready to fly, 2023-09-03 ### **--- "Just when to plug in?" The app works okay, but the people behind it need to do more work on their scheduling. You can set an alert only to find that it’s been moved by anything up to 24 hours from that time: When an alert pops up, I always have to open the app just to check that it’s still valid. Think the guys at National Grid need to invest in some better computers which will predict the times more accurately and consistently! -- 85yekips, 2022-11-19 ### ***-- "Tapping on inter connectors does nothing" Should it? -- Mesgoose, 2022-10-11 ### *---- "I could not run the app past the initial setup pages" I could not run the app past the initial setup pages -- Philguy1919, 2022-10-07 [View all WhenToPlugIn reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## Apps Similar to WhenToPlugIn - [GridCarbon](https://apptail.io/app/gridcarbon-qt/united-kingdom) - [Octopus Energy Watchdog](https://apptail.io/app/octopus-energy-watchdog-tfq/united-kingdom) - [Octopus Watch](https://apptail.io/app/octopus-watch-ILt/united-kingdom) - [Octopus Compare](https://apptail.io/app/octopus-compare-fCx/united-kingdom) - [Gridwatch](https://apptail.io/app/gridwatch-tgy/united-kingdom) - [Grid Status](https://apptail.io/app/grid-status-Gsy/united-kingdom) - [Octopus Labs](https://apptail.io/app/octopus-labs-ZOy/united-kingdom) - [Octo Aid: Energy Insights](https://apptail.io/app/octo-aid-energy-insights-xez/united-kingdom) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. 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