Blog
Plain-English guides to plug-in solar, battery use, installation, tariffs and realistic energy savings.
Check your home's EPC rating and energy data
Look up your property's Energy Performance Certificate, estimated running costs and recommended efficiency upgrades before you size solar panels or a battery.
Search the EPC registerWhy Our Site Has a New Look
Same name, same team. We've moved from AEG red to our own Plug-In Energy look because we now offer batteries and solar from several brands.
An Update on the AEG Plug-In Battery
We no longer offer the AEG plug-in battery because we can't give a reliable delivery date. Here's what that means if you reserved one, and what you can buy today.
Are Plug-In Batteries Legal in the UK? What You Can Use Today
Charge a battery and power suitable appliances today. Understand the separate rules for household wiring and professional installation.
How to Register Your Plug-In Solar Kit (G98 Guide, 2026)
Free, no permission needed, a few minutes. Where to register an 800W kit, every network operator's G98 page, and what to enter.
Is Plug-In Solar Legal in the UK? (2026)
Yes — plug-in solar kits up to 800W can be used in UK homes. What the rules cover, where you can mount panels, and what to check before you plug in.
How Much Can an 800W Balcony Solar Kit Save?
An 800W plug-in solar kit makes around 680 kWh a year in the UK. See the yearly saving and payback at today's electricity price.
How to Find Your EPC Rating Before Going Solar
Your EPC grades your home A–G, estimates running costs and lists recommended upgrades. Here's how to look yours up in under a minute — and how to use it to size solar and battery storage.
Home Battery Storage Without Solar Panels — Is It Worth It in 2026?
You do not need solar to use battery storage. See how off-peak charging works for direct appliance use and qualifying installed systems.
Ofgem Q3 2026 Price Cap: Why a Home Battery Saves More Than Ever
From 1 July 2026 the electricity unit rate rises to 26.11p/kWh. See exactly what's changing — and how a plug-in battery turns the increase into a bigger annual saving.
Is Your Home Wiring Safe for a Plug-In Battery? 7 Checks Before You Buy
Plug-in batteries are designed for standard UK sockets — but only if those sockets are healthy. The 7 warning signs to check before installing, plus when to call an electrician.
Best Electricity Supplier for Solar Panels UK — Who Pays the Most for Export in 2026?
Every UK Smart Export Guarantee (SEG) tariff compared and ranked by p/kWh. Octopus, EDF, OVO, British Gas, E.ON, ScottishPower, Good Energy, Fuse, UW & more — find out who actually pays the most for your solar.
We Rebuilt Our Octopus Agile Calculator Using Real Half-Hourly Prices
Most Agile calculators average prices into one number. Ours simulates 30+ days of real half-hourly Octopus rates, day by day — and shows you today's actual prices live.
Best Electricity Tariff for Battery Storage UK — Every Supplier Compared
We compare 12 tariffs from 8 UK energy suppliers to find which saves the most with a home battery. Octopus, EDF, E.ON, British Gas, OVO, Scottish Power, UW & Economy 7 ranked.
Best Octopus Tariff for Battery Storage — Which Saves the Most?
We compare all five Octopus tariffs head-to-head: Go, Agile, Flux, Intelligent Go & Cosy. Find out which one delivers the best savings with a home battery.
Octopus Agile Battery Storage — Is It Worth It?
Half-hourly pricing explained: how charging in cheaper slots and using stored energy at peaks is modelled, with calculator-led estimates.
Octopus Flux Battery Savings — Solar + Battery Guide
Flux offers 3 daily price bands plus premium export payments. See how pairing Flux with a home battery maximises your solar and grid savings.
Intelligent Octopus Go — EV + Home Battery Savings
6-hour off-peak window at 7.5p/kWh — charge your EV and your home battery overnight. The ultimate guide for EV owners.
How to Store Excess Solar Energy Without Changing Your System
Already have solar panels? Up to 50% of your generation may not be used at home. Learn how an AC-coupled battery captures excess solar via your smart meter — no rewiring.
Plug-In Solar Panels UK: Government Confirms They'll Be in Shops Within Months
The UK government has announced plug-in solar panels will be available in shops within months. Here's what it means for homeowners — and why pairing them with a battery maximises savings.
Best Home Battery Storage UK 2026: Complete Buyer's Guide
Compare the best home batteries in the UK for 2026. Capacity, chemistry, warranty, price — everything you need to choose the right battery.
Is Home Battery Storage Worth It? UK Costs & Savings Breakdown
An honest, data-driven look at whether home battery storage makes financial sense for UK homeowners in 2026. Real costs, real savings, real payback periods.
LFP vs NMC Batteries: Which Is Safer for Your Home?
Not all lithium batteries are equal. We compare LFP and NMC chemistry for safety, lifespan, and UK climate performance.
How Much Can a Home Battery Save You Per Year?
Real savings calculations for UK homeowners — by tariff type, battery size, and household consumption.
AC-Coupled vs DC-Coupled Batteries: What's the Difference?
AC vs DC coupling explained. Which is better for your setup? Installation cost, efficiency, and flexibility compared side by side.
Already Have Solar? Here's Why a Plug-In Battery Is the Smartest Upgrade You Can Make
Your solar panels are exporting excess electricity for pennies. A plug-in battery captures that free energy and uses it when you actually need it — check the connection route for your model.
AC-Coupled Battery Storage in the UK: How the Government's Energy Security Push Creates Real Savings for Homeowners
The government has unveiled a landmark package to make Britain energy-secure. Here's what it means for homeowners — and why AC-coupled batteries are the smartest move right now.