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If your energy supplier changes ownership, your account does not automatically close, your tariff does not automatically change, and you are not necessarily moved to a new supplier. What happens depends on whether the supplier continues trading, stops trading, or enters administration. Read the notice carefully and confirm any account or contract changes directly with the supplier named in it.
First, identify what kind of change has happened
“Supplier changes ownership” can describe different events. An acquisition may leave the licensed supplier trading, while a supplier failure or formal transfer can involve a different supplier taking responsibility for customers. Administration is another distinct process. The notice you received—not the fact that a familiar brand or owner has changed—is the best starting point for determining which applies.
| Situation | What happens to supply and the account | What to look for |
|---|---|---|
| Ownership changes while the supplier continues trading | The sources do not establish a universal account or contract outcome for every acquisition. Check the notice and your contract rather than assuming your account has closed or your tariff has changed. | Whether the same legal supplier is still supplying your premises, and whether the notice says your account, tariff, payment arrangements, or contact details will change. |
| Supplier stops trading and Ofgem appoints a supplier of last resort | Ofgem says household customers continue receiving energy and are moved through its supplier-of-last-resort process. The new supplier or, in some cases, the failed supplier’s administrator deals with balances and debts. | Whether the notice says your supplier has ceased trading and identifies a new supplier. Ofgem’s household guidance for a supplier failure explains the process. |
| Administrator takes over the existing supplier under the Special Administration Regime | The supplier continues operating and supply is not disrupted while the administrator considers options such as rescue, sale, or transferring customers. This is an exceptional process, not the default result of a takeover. | Whether the notice refers to administration or the Special Administration Regime. Ofgem’s business guidance describes this scenario. |
Will your account or tariff change after a takeover?
There is no single outcome established for every UK ownership transaction. A change in the company that owns a supplier does not, by itself, prove that your account has closed, that you have a new contract, or that your tariff has changed. The terms depend on the transaction and your customer contract. Check the notice and the contract for any stated changes, and ask the supplier to confirm unclear points in writing.
Branding can also differ from the identity of the licensed supplier. In Ofgem’s 2018 Spark Energy and OVO example, OVO acquired the Spark brand and operating company; separately, after Spark Energy Supply Ltd ceased being a supplier, Ofgem appointed OVO to take on its customers. Under that arrangement, customers continued to be billed by Spark and contacted by Spark customer-service staff, while their energy was supplied under OVO’s licence. That specific arrangement should not be treated as a rule for other acquisitions. Ofgem’s Spark Energy customer guidance describes the case.
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#1 Best Overall
Watt Meter Power Meter Plug Home Electricity Usage Monitor 7 Modes Display
- Various Monitoring Parameters: The power meter plug can monitor the power (W), energy (kWh), volts, amps, hertz, power factor, cost, minimum and maximum power (W), cumulative days and time of your appliances. By switching 7 display modes, you can easily know the various parameters while the appliance is working. The home energy monitor can also calculate and display how much power your appliance uses and how much electricity bill it cost in cumulative time
- Upgraded LCD Display: With large screen size 2.36 inch x 1.85 inch, clearer monitor backlit, our electrical usage monitor can display the data clearer and more visible no matter day or night. 180°full wide viewing angles is great for reading and recording the data in any angles. No need to stand on the front of the display and bend over to read the numbers
- Adjustable Backlight Time: Our upgraded watt meter has 5 options of backlight time. The default backlight time duration is 10 minutes(bL-0). If you want to change the backlight time, you can press and hold "UP" and "DOWN" button at the same time to enter backlight time setting, then press "UP" and "DOWN" to select the backlight time (bL-0 =10 minutes, bL-1=1 hour, bL-2=4 hours, bL-3=8 hours, bL-4=always on), finally press the "COST" to save the backlight time settings
- Overload protection: When the power of the appliance exceeds the overload power, the LCD will display “OVERLOAD” to warn the user. All the buttons will quit working and can only be workable when you lower or remove the load power. The default overload power is 3680W and is adjustable from 0 to 3680W. In general, you need to set the overload power to 1800W before using. Just press the "function" button for more than 3 seconds to enter the setting
- Data Memory Function: The wattage meter will record your power consumption data when you remove it from socket, or remove appliances from the electricity monitor. You can directly see the last data when you use it next time. This function can also automatically save the data when there is a sudden power failure
What to check in the supplier’s notice
Use the notice and your existing contract to establish who is responsible for your account and whether anything is changing. If any detail is unclear, contact the supplier through a verified channel and request written confirmation.
- Supplier identity: Check the legal supplier name and whether that supplier is still supplying your premises.
- Account access: Look for your account number, any new login instructions, and whether you can still access your existing account.
- Contract and tariff: Ask whether your tariff, contract end date, or other terms are changing, and where any change is set out.
- Payments and balance: Confirm whether your payment mandate or payment instructions are changing, and how any credit, debit, or outstanding balance will be handled.
- Customer service: Note the contact details in the notice and verify them before sharing account or payment information.
Taking and keeping a meter reading can also help preserve a record if you expect to lose access to old account information. Ofgem presents this advice in its supplier-failure guidance; it is a sensible recordkeeping step if access is changing, not a stated requirement whenever ownership changes.
Rank #2
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Upgraded Watt Meter Power Meter Plug Home Energy Monitor 8 Display Modes
- Multi-function power monitor: Our electric usage monitor can monitor the power (W), electricity(kWh), voltage(V), frequency(Hz), current(A), power factor(PF), unit price($/kWh), total cost($) of your appliances. By switching 8 display modes, you can easily know the various parameters while the appliance is working. The “electricity” mode can calculate and display how much power your appliance uses. And the “total cost” mode will show how much electricity bill it cost in cumulative time
- Overload protection: When the loading power of the appliance is over the default overload threshold 1800W, the whole display with backlight and the word “OVERLOAD” will keep flashing to warn the users. Please turn off the appliance for safety concern
- Premium Material: The whole body of our energy meter is made of high-quality ABS material. It makes our home electricity usage monitor more long lasting, fireproof and anti-drop. The standard US socket and plug is suitable for all US standard appliances
- Backlight Display: With white backlight and black words, the LCD display of our home power monitor can display the data clearer and help you to read the data easier no matter day or night. The backlight will only lights up when the device is connected to AC power. If no button is pressed, the backlight turns off automatically after 10 minutes. You can also press the "UP" button to turn off the backlight manually, and press any button to turn on backlight again
- Easy to reset: No reset tool needed, our appliance power usage meter is easy to reset. You can press the “M” button for 5 seconds directly to reset the device. After reset, all cumulative data (electricity quantity, cost) will be cleared, and all settings will be restored to factory settings
Do you need to switch energy supplier?
Not merely because the owner has changed. Whether you want to switch is a separate decision from the ownership change. Check your contract and the applicable switching rules before leaving. Ofgem advises business customers to check notice requirements, exit fees, and switching windows; household customers can compare suppliers and switch using Ofgem’s household switching guidance.
If you are a business customer, review the contract’s notice period, any exit fee, and when a switch is allowed before arranging one. These terms can affect when you can leave and what it may cost.
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Quick Recap
Best Value
Sale
Smart Home Energy Monitor with 16 50A Circuit Level Sensors, Real-Time Power Usage & Electricity Cost Tracking, Ideal for Rental Homes & Shared Apartments, App History, Compatible with Home Assistant
- ⚡ EASY INSTALLATION: Installs in circuit panel of most homes with clamp-on sensors. Supports single-phase up to 240VAC line-neutral; single, split-phase 120/240VAC; and three-phase up to 415Y/240VAC (no Delta). The branch lines can automatically match different phases and have no restrictions in terms of quantity and voltage.Panels with access only to busbars will need flexible sensors available from SEM-Meter.
- ⚡ ENERGY MONITORING ANYTIME, ANYWHERE: Monitor your home's real power anywhere, anytime to prevent costly repairs, conserve energy, and save costs. Monitor solar / net metering. Light commercial 3 phase option available as a separate bundle. Protected by a 1-year warranty.
- ⚡ VARIOUS ELECTRICAL APPLIANCE MONITORING: Comes with 16 50A sensors to accurately monitor your air conditioner, furnace, water heater, washer, dryer, range, etc.
- ⚡ LOWER YOUR ELECTRIC BILL: SEM-Meter measures real-time spending and gets actionable notifications to understand where savings can be made, both to lower your electric bill and to conserve energy and protect the planet’s resources. Be an environmentalist.
- ⚡ REAL-TIME ENERGY DATA: Connect SEM-Meter device via 2.4GHz WiFi to monitor energy usage, with an accuracy range of 1%. View usage in real time through Android/Apple software. Statistics of power usage in now/day/week/month/year format: the validity period of hourly exported data is 90 days, and the exported data of day/month/year data is permanent, available at any time Export from application.
Rank #4
2 Pack Upgraded Watt Meter, Power Meter Plug Electricity Usage Monitor
- Various Monitoring Parameters: The power meter plug can monitor the power (W), energy (kWh), volts, amps, hertz, power factor, cost,minimum and maximum power (W), cumulative days and time of your appliances. By switching 8 display modes, you can easily know the various parameters while the appliance is working. The wattage meter can also calculate and display how much power your appliance uses and how much electricity bill it cost in cumulative time
- Premium Material: The whole body of our power monitor is made of high-quality PC material. It makes our home power consumption monitor more long lasting, heat resistant and fall resistant. The standard US socket and plug is suitable for all US standard appliances
- Overload Protection: When the power of the appliance exceeds the overload power, the word "OVERLOAD" and the LCD display will keep flashing, the buzzer will keep making a bi sound to warn the users. All the buttons will quit working and can only work again when the overload alarm has been cleared by raising the setting value or removing the appliance. The default overload power is 3680W and is adjustable from 0 to 3680W. In general, you need to set the overload power to 1800W before using. Just press the "MODE" button for more than 3 seconds to enter the setting
- KWH Alarm: Our power monitor plug has a upgraded power consumption alarm function. You can set the alarm power consumption for the appliances you monitored. Once the accumulated power consumption reaches the set alarm power consumption, the word "kwh alarm" will be displayed and keep flashing, the LCD will also keep flashing, and the buzzer will keep making a bi sound all the time to warn the users
- Data Memory Function: The watt meter plug in will record your power consumption data when you remove energy meter from socket, or remove appliances from the electricity monitor. All setting data and cumulative data(electricity quantity, cost, unit price, time) will be saved. You can directly see the last data when you use the electric usage meter plug next time(NOT including current, voltage, power, power factors). This function can also automatically save the data when there is a sudden power failure
Rank #3
Emporia Vue 3 Home Energy Monitor - Smart Home Automation Module and Real Time Electricity Usage Monitor, Power Consumption Meter, Solar and Net Metering for UL Certified Safe Energy Monitoring
- SAFETY YOU CAN TRUST WITH UL CERTIFICATION: With Emporia Energy, your home energy monitoring is safe, reliable, and certified. The Emporia Vue is UL Listed, meaning it has met rigorous safety standards for electrical products in the U.S. and Canada. This certification ensures that every component has been thoroughly tested to prevent hazards, such as overheating, short-circuiting, or fire, offering you peace of mind as you manage your home’s energy consumption.
- INSTALLS IN CIRCUIT PANEL of most homes with clamp-on sensors. Supports Single phase, Single-split phase, and 2-wire systems. 3-wire systems; 3-phase, 4-wire Wye systems with earthed (TN or TT) neutral (no-Delta) are supported with an additional 200A sensor (sold separately).
- 24/7 ENERGY MANAGEMENT AND MONITORING: Automate, manage and control your home's real power anywhere, anytime to prevent costly repairs, conserve energy, and save costs. Monitor solar / net metering. PROTECTED BY A 1-YEAR WARRANTY.
- LOWER YOUR ELECTRIC BILL: Configure settings in the Emporia Energy App to automate energy management for time of use, peak demand, excess solar, and rewards programs. You can even see live reporting and invaluable savings opportunities instantly. Gauge real-time spending and get actionable notifications and automated energy management to help you reduce costs.
- REAL-TIME ENERGY DATA: REQUIRES 2.4 GHz WIFI WITH AN INTERNET CONNECTION to monitor energy use with iPhone / Android / Web app. Vue sensors collect energy data and are accurate from ±2%. The Vue is UL and CE Listed for your safety. 1 second data is only available in the app (when actively open) and retained 3 hours. Minute and hour data are retained in the cloud. 1 minute data is retained 7 days, 1 hour data is retained indefinitely. Export cloud data whenever you want in the app.
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