FAQs

Your Energy Questions Answered: Expert Guidance from Kilowatt Energy

At Kilowatt Energy, we’re dedicated to demystifying the UK energy market. This FAQ section answers the most common questions about electricity suppliers, tariffs, switching, and energy efficiency drawing on our expertise as trusted energy consultants.

From comparing providers to understanding your bills and reducing consumption, you’ll find clear, practical answers to help you make informed energy decisions. If you need personalised advice, our team is here to help. Get in touch for a free consultation.

The risk of a supply squeeze due to Middle East instability is real, but the 2026 market is different than 2022. While tensions can cause ‘knee-jerk’ spikes in daily rates, many suppliers have already priced this risk into their long-term offers. As your industrial energy consultant UK, we advise against panic-buying. Instead, we use wholesale market intelligence to look for ‘calm windows’ in the market. We help you implement a ‘hedging’ strategy securing a portion of your energy now to protect against a war-driven spike, while keeping the rest flexible so you can benefit if the situation de-escalates.

Total blackouts are unlikely, but ‘Demand Side Response’ is becoming a huge topic. In times of global supply strain, the grid actually pays businesses to reduce their usage during peak hours. We help you prepare for this by mapping your ‘Digital Twin’ identifying exactly which parts of your production can be powered down for short bursts without losing money. This turns a global crisis into a local revenue stream, as you get paid to help balance the UK grid while prices are volatile.

Yes, from December 19, 2024, small businesses can use the Energy Ombudsman for electricity disputes if they have fewer than 50 employees or full-time equivalent, with annual turnover of at most £6.5 million or balance sheet total of £5.0 million, or annual electricity consumption of not more than 200,000 kWh Resolver. This is a significant expansion of consumer protections for business electricity customers. You must wait 8 weeks after using your energy supplier’s complaints process or receive a deadlock letter before approaching the Ombudsman Energy Ombudsman. The Energy Ombudsman service for business electricity disputes is free and can order suppliers to fix problems, explain issues, apologize, or pay compensation. This levels the playing field for smaller businesses previously without affordable dispute resolution for electricity complaints.

To complain about your commercial electricity supplier, first contact their customer service department using the complaints procedure detailed on their website or bills. Document all issues with dates, reference numbers, and evidence such as bills and meter readings. Most business electricity suppliers must acknowledge complaints within 2 business days and resolve them within 8 weeks. If unresolved after 8 weeks or if you receive a deadlock letter, small businesses and micro businesses can escalate to the Energy Ombudsman Energy OmbudsmanEnergy Ombudsman. Keep records of all correspondence including emails, letters, and chat transcripts for your electricity complaint. Kilowatt Energy can assist with managing complex business electricity complaints and ensuring suppliers meet their obligations.

Commercial electricity brokers are intermediaries who negotiate electricity contracts with suppliers on behalf of businesses. Unlike domestic customers who can compare electricity easily online, business electricity markets are complex with bespoke pricing, varied contract terms, and significant price differences between suppliers. A good electricity broker saves businesses time and money by accessing wholesale rates, negotiating terms, and managing renewals. Brokers typically earn commission from suppliers, so their service appears “free,” though this is built into rates. The key question is whether they pass savings to you or pocket maximum commission. Kilowatt Energy operates transparently—we disclose all commission and focus on securing the lowest possible electricity rates for clients, typically 15-30% below market rates. For businesses using 50,000+ kWh of electricity annually, professional procurement is essential.

If you’re outside a fixed-term contract or within the last 49 days of your contract, you can switch freely without exit fees. Check your contract end date on your bill or by contacting your supplier. If you’re mid-contract on a fixed deal, exit fees typically range from £30-£60 per fuel. However, if switching saves you more than the exit fee, it may still be worthwhile. Some suppliers waive exit fees for customers facing financial hardship. Always calculate the total cost including any fees before switching.

The standard switching process takes 17-21 days from the date you sign up with your new supplier, as regulated by Ofgem. During this time, your electricity supply continues uninterrupted—you won’t experience any outages or service changes. The new supplier handles all communication with your old supplier, though you should provide an accurate meter reading on the switch date. In some cases, if there are complications with your meter or account, the switch may take slightly longer, but your current supply remains active throughout

If you owe less than £500 for electricity (or £1,000 for dual fuel), you can still switch to most suppliers, though they may require you to repay the debt or set up a repayment plan. If you owe more, your options are limited, but some suppliers will still accept you with a payment plan. Prepayment customers can usually switch regardless of debt. The best approach is to contact your current supplier to arrange a manageable repayment plan, then explore switching once the debt is under control. We can advise on the best suppliers for your specific situation.

Most suppliers offer flexible tariffs suitable for renters, including Octopus Energy, Bulb, OVO Energy, and Utilita. Look for tariffs with no exit fees or short contract terms (monthly rolling contracts). Prepayment meters are also popular with renters as they offer complete flexibility with no credit checks or contracts. Some suppliers like Octopus offer monthly rolling contracts on their variable tariffs. Always inform your landlord before switching suppliers, though legally you have the right to choose your own energy supplier if you pay the bills directly.

Heating and hot water are the biggest contributors to electricity bills, accounting for around 40-50% of consumption if you use electric heating. Electric showers, tumble dryers, and electric cookers are also major consumers. Continuously running appliances like refrigerators, freezers, and always-on devices (TVs on standby, broadband routers, game consoles) add up significantly over time. Air conditioning in summer and electric space heaters in winter can dramatically increase bills. Understanding your specific usage pattern through a smart meter can identify your biggest energy drains.

The most common causes are inefficient electric heating systems, poorly insulated homes requiring more heating, old inefficient appliances (especially fridges and freezers over 10 years old), and behavioural factors like leaving devices on standby or running appliances at peak times. Faulty appliances can also draw excessive power. Sometimes high bills result from estimated rather than actual meter readings, incorrect tariffs, or billing errors. If your bill has suddenly increased without explanation, check for meter reading accuracy, compare unit rates to previous bills, and consider whether you have a faulty appliance drawing excess power.

A smart meter with an in-home display shows real-time usage, allowing you to turn appliances on/off to see their impact immediately. Alternatively, use a plug-in energy monitor (£15-30) to measure individual appliances. Systematically check usage: turn everything off except one appliance, note the consumption, then move to the next. High constant baseline consumption when “everything’s off” suggests appliances on standby or a fault. Smart plugs with energy monitoring provide ongoing tracking. For comprehensive analysis, Kilowatt Energy can arrange professional energy audits identifying all major consumption sources and efficiency opportunities.

Most major suppliers including EDF, British Gas, E.ON, Scottish Power, and Octopus Energy offer fixed-rate tariffs lasting 12-24 months. Fixed plans protect you from price increases during the contract period but may have early exit fees. In the current market, fixed rates are sometimes higher than variable rates capped by Ofgem, so careful analysis is needed. The decision between fixed and variable depends on your risk tolerance and market predictions. We can model different scenarios to help you decide the best approach.

Common electricity waste includes appliances left on standby (TVs, computers, phone chargers, microwaves), which can account for 10% of your bill; running appliances at inefficient times or settings (half-empty washing machines, overfilled kettles); old inefficient light bulbs; leaving lights on in empty rooms; and overheating rooms. Phantom loads from devices constantly drawing power even when “off” waste significant energy cumulatively. Poor insulation causing heating systems to work harder is another major source of waste. Simple behaviour changes—using power strips to fully switch off devices, filling kettles appropriately, and upgrading to LED bulbs—can reduce waste by 15-20%.

High bills when away suggest constantly running appliances, devices on standby, or a fault. Check your refrigerator and freezer are working efficiently (not icing up or running constantly). Heating systems with timers may still be activating, immersion heaters might have switched on, or security systems and broadband routers draw continuous power. If you have an electric boiler or water heater, it may be maintaining temperature even when unnecessary. Take a meter reading before leaving, another on return, and calculate actual usage to verify the bill is accurate. An unexpectedly high reading when the house is empty could indicate a meter fault or electricity theft.

Standard meters show a row of black numbers (ignore red numbers)—read from left to right. Digital meters display the reading on an LCD screen, sometimes requiring a button press to cycle through displays. Economy 7 meters show two readings: one for day rate (normal), one for night rate (low). Smart meters automatically send readings to your supplier, but you can view them on the in-home display. Always photograph your meter reading for records, and submit readings monthly to avoid estimated bills. Your bill shows kilowatt-hours (kWh) used—multiply this by your unit rate to verify charges.

All major UK energy suppliers are required to offer free smart meter installation, including British Gas, EDF, E.ON, Octopus Energy, OVO Energy, Scottish Power, and SSE. Smart meters (SMETS2 is the current standard) automatically send readings to your supplier and come with an in-home display showing real-time usage and costs. Installation takes 1-2 hours and is completely free. Some suppliers prioritize smart meter rollout better than others—Octopus Energy and British Gas have particularly efficient installation services. Contact your supplier to book installation, or switch to a supplier offering prompt smart meter appointments.

Contact your electricity supplier to request a prepayment meter—installation is usually free, though some suppliers charge if you’re switching from credit to prepayment by choice rather than necessity. Installation takes 1-2 hours. You’ll receive a key or card to top up at local shops, Post Offices, or online. Prepayment meters suit those wanting complete control over spending or those with poor credit history. However, prepayment rates are typically slightly higher than direct debit rates. Since 2020, smart prepayment meters allow remote top-up without visiting shops, and emergency credit prevents disconnection outside normal hours.

Signs of a faulty electricity meter include unexpectedly high bills, the electricity meter running even when all power is switched off, unusual noises, visible damage, or the display not working. To test your electricity meter, turn off all appliances and check if the meter still shows electricity consumption. Compare actual electricity readings against estimated bills to spot irregularities. If you suspect your electricity meter fault, contact your supplier to arrange a meter accuracy test—you can request an independent electricity meter test from an Ofgem-approved engineer (free if the electricity meter is faulty, around £120 if it’s working correctly). Never attempt to inspect or repair your electricity meter yourself.

Faulty electricity meter indicators include bills dramatically higher or lower than usual without explanation, the electricity meter wheel spinning or digital display changing constantly even with all appliances off, physical damage or burnt smell around the electricity meter, flickering or non-functioning display, or the meter “running backwards.” Inconsistent electricity readings—jumping forward significantly between readings without corresponding usage—also suggest electricity meter problems. If neighbours with similar properties have vastly different electricity consumption, investigate your electricity meter further. Request your supplier conduct an electricity meter accuracy test. In rare cases, an extremely low electricity reading might indicate the meter has stopped registering consumption, which will eventually result in back-billing.

Smart electricity meters provide accurate automatic readings (no more estimates or manual electricity submissions), real-time electricity usage visibility helping reduce consumption by 10-15%, easier electricity supplier switching, and no need for meter reader visits. The in-home display shows electricity spending in pounds and pence, making budgeting easier. Time-of-use electricity tariffs (cheaper overnight electricity) require smart meters. They help identify faulty appliances quickly and support better customer service as electricity suppliers see actual consumption patterns. Smart prepayment electricity meters offer emergency credit and remote top-up. There’s no cost to you—smart electricity meter installation is free and the meters are maintained by your supplier.

Economy 7 tariffs charge lower rates for seven hours overnight (typically 11pm-8am or midnight-7am) and higher rates during the day. They’re designed for homes with electric storage heaters, immersion heaters, or EV charging. Standard tariffs charge one rate 24/7. Economy 7 saves money only if you use at least 40% of your electricity during the cheaper night hours. You need a special Economy 7 meter showing two readings. Most modern homes don’t benefit from Economy 7 unless they have significant nighttime usage. Octopus Energy’s Agile tariff offers a more sophisticated alternative with pricing varying by hour.

Standard tariffs are better for most households as Economy 7 only saves money if you genuinely use 40%+ of electricity overnight. If you have electric storage heaters, run dishwashers/washing machines overnight, or charge an EV at home, Economy 7 could save £150-300 annually. However, the daytime rate is significantly higher (often 30-40% more than standard rates), so daytime-heavy users pay more overall. Calculate your day/night usage split before deciding. For EV owners, consider Octopus Energy’s EV tariff (Intelligent Octopus Go) offering super-cheap overnight rates specifically for charging. Most households without electric heating are better on standard tariffs.

Students should look for flexible tariffs with no exit fees, online account management, and no credit check requirements. Many students benefit from inclusive bills in student accommodation. For those in private housing, Octopus Energy, Utilita, and OVO Energy offer student-friendly options with flexible terms. Prepayment meters work well for shared houses as they prevent debt build-up and allow fair splitting of costs. Some suppliers offer student discounts or referral bonuses. The key priorities are no fixed contracts (allowing movement during holidays), low deposits, and transparent pricing. We can advise on bill-splitting arrangements for shared student properties.

Contact your electricity supplier by phone, online account, or app to set up direct debit. You’ll need your bank account details (sort code and account number). Most suppliers offer several payment dates throughout the month—choose one a few days after your regular income arrives. Direct debit is the cheapest payment method, typically 5-7% cheaper than prepayment or payment on receipt of bill. You can choose monthly fixed payments (smoothing costs year-round) or monthly variable payments (paying for actual usage). Direct Debit Guarantee protects you against incorrect payments. You can cancel anytime, though you’ll lose the discount and may need to switch payment methods.

Several suppliers offer loyalty rewards: Octopus Energy provides “Octopoints” for referrals and community engagement (redeemable against bills); OVO Energy offers “OVO Beyond” with rewards for reducing peak-time usage; British Gas offers rewards through its British Gas Rewards app for various activities. Some cashback sites like TopCashback and Quidco offer switching bonuses (£30-80) when you switch through their links. Credit card companies sometimes partner with energy suppliers for cashback. However, don’t let rewards distract from the core question: is this the cheapest tariff overall? A 2% reward on an expensive tariff is worse than a cheaper tariff without rewards.

A fixed-rate tariff locks in your unit rates and standing charge for a set period (typically 12-24 months), protecting you from price increases during that time. You’ll pay the same per kWh regardless of wholesale market fluctuations. Fixed tariffs usually include exit fees (£30-60) if you leave early, though these are waived in the final 49 days. While fixed tariffs provide budget certainty, they’re not always cheaper—sometimes the variable price-capped tariff offers better value. Fixed rates are most valuable when prices are expected to rise. Consider fixing when wholesale prices are low or when you value payment predictability over potential savings.

In November 2025, this depends on market conditions and your risk tolerance. Variable tariffs (capped by Ofgem) currently offer flexibility and are sometimes cheaper than fixed deals, but they change quarterly with the price cap. Fixed tariffs provide certainty but may cost more and include exit fees. Choose fixed if you prioritize budget predictability, expect prices to rise, or have tight finances where unexpected increases cause hardship. Choose variable if you want flexibility, believe prices will fall, or want to switch suppliers easily. Review fixed deals every 3-6 months—if prices fall, it might be worth paying exit fees to switch. Our consultants monitor market trends and can advise on optimal timing.

Call 105 (free from mobiles and landlines) to report power cuts and get information—you’ll be automatically connected to your local network operator. Check your network operator’s website or app (find your operator by postcode on nationalgrid.com). Most operators have live power cut maps showing affected areas and estimated restoration times. Check if neighbors have power—if they do, the problem is likely your property, not the network. Social media (Twitter/X) often has real-time updates from network operators. For non-emergency supply issues, contact your electricity supplier. Save 105 in your phone for quick access during emergencies.

Call 105 or check your Distribution Network Operator’s (DNO) website power cut map for restoration estimates. Most network operators provide regular updates via text or phone if you register your details. Estimated restoration times are given as soon as engineers assess the fault, typically within 1-2 hours of the outage starting. Simple faults (like blown fuses) may be fixed within 2-3 hours, while major damage (like storms damaging multiple substations) can take 24-48 hours. Network operators must provide regular updates and compensation if you’re off supply beyond certain thresholds (12-24 hours depending on circumstances).

Under Ofgem regulations, your Distribution Network Operator must restore power within 18 hours for standard situations, or 24 hours during severe weather. If they fail to meet these standards, you’re entitled to compensation—£80 for failure to restore within standard times, with additional payments for every 12 hours beyond that. Vulnerable customers on the Priority Services Register receive higher compensation. However, during exceptional circumstances (major storms, widespread damage), these timelines may be extended. Network operators must provide regular updates, alternative arrangements (like generators for critical needs), and welfare support for extended outages. If off supply beyond standard times, compensation is automatic—contact your supplier to claim if not received.

Call 105 for all power cut emergencies—this free number automatically connects you to your local electricity network operator who manages the physical infrastructure. Do not call your energy supplier for power cuts as they only handle billing, not network operations. Your network operator (companies like UK Power Networks, Electricity North West, or Scottish and Southern Electricity Networks) is responsible for restoring power. You can also find your network operator at powercut105.com or by checking your electricity bill. For life-threatening emergencies involving electricity, call 999. For non-urgent billing or account issues, contact your energy supplier’s customer service number.

For power cuts and network faults, your Distribution Network Operator provides 24/7 emergency services—call 105. However, for electrical faults within your property (like faulty wiring, broken sockets, or tripping circuits), you need a qualified electrician. Some electricity suppliers offer emergency electrician services or have partnerships with approved contractors—British Gas, E.ON, and Scottish Power offer emergency cover as part of home care packages. Private options include trusted electrician services like Pimlico Plumbers, Local Heroes, or find registered electricians through NICEIC or ELECSA databases. For life-threatening electrical emergencies, always call 999 first, then 105 if it involves the external network.

Renewable electricity suppliers reduce your carbon footprint—the average home switching to 100% renewable electricity saves approximately 1.5 tonnes of CO2 annually, equivalent to 3,000 miles of driving. Many green suppliers invest in new renewable infrastructure rather than just purchasing certificates. You support the UK’s transition to clean energy and often benefit from fixed prices as renewable energy costs are more stable than fossil fuels. Some green suppliers offer innovative tariffs like Octopus’s Agile tariff, using smart technology to optimize consumption. There’s often no price premium—many 100% renewable tariffs are competitively priced. However, verify credentials as “green” marketing varies significantly in authenticity.

Wind power (both onshore and offshore) is currently the cheapest renewable electricity source in the UK, with offshore wind farms producing electricity at record-low costs—cheaper than new gas power stations. Solar power is the second cheapest, particularly large-scale solar farms. For consumers, “cheapest renewable electricity” means finding suppliers offering competitive tariffs while sourcing from renewables. Good Energy, Octopus Energy, and Ecotricity offer 100% renewable electricity at competitive prices. The cheapest depends on your usage and location. Renewable energy is increasingly cost-effective as technology improves and fossil fuel prices fluctuate. We can compare renewable tariffs against standard ones to show potential savings.

Not necessarily—in 2025, many 100% renewable electricity tariffs are priced competitively with standard tariffs. Some are even cheaper due to the declining cost of renewable energy and stable pricing unaffected by volatile fossil fuel markets. However, premium green tariffs from suppliers investing heavily in new renewable infrastructure may cost slightly more. The price difference, if any, is typically £20-50 annually. When comparing, look beyond unit rates to standing charges and payment method discounts. Green tariffs may offer better long-term value as fossil fuel prices are more volatile. Check comparison sites filtering specifically for renewable tariffs to see current pricing relative to standard options.

Check if your supplier is genuinely purchasing renewable electricity or just buying Renewable Energy Guarantees of Origin (REGOs) certificates, which is less impactful. Truly green suppliers like Good Energy, Ecotricity, and Green Energy UK invest directly in renewable generation. Look for independent verification—Uswitch and Which? publish guides on genuinely green suppliers. Check suppliers’ fuel mix disclosure statements (legally required) showing what percentage comes from renewables. Ofgem’s Renewables and CHP Register lists accredited generators. Be wary of vague “green” marketing—ask specifically: “Do you purchase renewable electricity directly or just REGOs?” and “Do you invest in new renewable infrastructure?” Kilowatt Energy can verify suppliers’ green credentials and identify genuinely sustainable options.

Leading solar panel installers include Octopus Energy (offering integrated solar + battery + supply), British Gas (through its installation service), E.ON (offering solar as part of energy packages), and specialist installers like Project Solar UK, Spirit Energy, and Solarplicity. Choose MCS-certified installers for quality assurance and government scheme eligibility. Some suppliers offer integrated packages where your solar generation, battery storage, and electricity supply are managed together, optimizing when you export to the grid versus use stored power. Octopus Energy’s export tariffs (like Outgoing Octopus) pay well for surplus generation. Kilowatt Energy can recommend installers and help navigate the complex options around solar + supply integration.

Business electricity isn’t protected by the Ofgem price cap, meaning prices fluctuate more freely based on wholesale markets and negotiation. Business rates are typically charged at different (often lower) unit rates but may have higher standing charges. Contracts are more complex with varying lengths (1-5 years common), and early termination fees are substantial. Business consumption is usually higher, making economies of scale possible. VAT is charged at 20% for businesses versus 5% for domestic properties. Businesses can access time-of-use tariffs and demand-based pricing. Importantly, businesses must proactively renew contracts—if you don’t, you’ll roll onto expensive out-of-contract rates, often 30-50% higher than negotiated contracts.

Still Have Questions About Your Energy Supply?

We understand that every home and business has unique energy needs. While we've covered the most common questions here, your situation may require personalized advice.

At Kilowatt Energy, our expert consultants are ready to help you:

  • ✓ Find the cheapest electricity tariff for your exact usage
  • ✓ Negotiate better rates with suppliers on your behalf
  • ✓ Switch suppliers hassle-free with no hidden fees
  • ✓ Reduce your energy bills through smart consumption strategies
  • ✓ Navigate complex business energy contracts
  • ✓ Access exclusive rates not available to the public

Don’t leave money on the table- get expert guidance today.