The energy library / All guides
Better questions. More confident decisions.
Explore the technology, understand the numbers and prepare for a useful conversation. Start with a topic or search for a specific product.
Plain-English explanations of solar, storage, heating and electricity tariffs.
Source-linked product guides and practical questions to put to an installer.
Interactive tools with visible assumptions and a brief you can take to your next conversation.
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Solar Panels · 3 min
How much could solar panels save? Work through your own numbers
Separate avoided electricity purchases from export income, test a worked example and see which assumptions have the biggest effect.
Read the guideHeat Pumps · 3 min
Heat pump installation costs: how to read a complete quote
Separate the equipment, heating-system changes and grant assumptions so you can compare the real cost of a heat-pump installation.
Read the guideHeat Pumps · 3 min
Heat pump grants: current routes for England, Wales, Scotland and NI
Check the correct funding route for your property, including current Boiler Upgrade Scheme categories and the conditions of the temporary oil/LPG uplift.
Read the guideSolar Panels · 3 min
Choosing the best solar panels for your roof: a UK buying guide
Compare exact panel models, roof fit, warranties and installation design without relying on a generic brand ranking.
Read the guideHeat Pumps · 3 min
Choosing a heat pump: compare the design, model and support
The product questions that matter beyond a brand ranking: heat loss, output at design conditions, flow temperature, noise and aftercare.
Read the guideEnergy Tariffs · 3 min
Solar export tariffs: compare the whole bill before switching
How to compare export payments alongside import prices, standing charges, eligibility and your actual solar generation profile.
Read the guideHeat Pumps · 3 min
Heat pump vs gas boiler: compare running costs using your rates
Work through the same heat demand, understand seasonal efficiency and find the electricity-to-gas price balance that matters.
Read the guideSolar Panels · 3 min
Solar panel costs in the UK: what your installation quote should include
A sourced cost reference, a clear installation checklist and a practical way to compare the value of a solar proposal for your roof.
Read the guideBattery Storage · 3 min
Solar panel battery storage: how the system works together
Follow the energy from your panels to your home, battery and grid, and understand the choices that shape a storage installation.
Read the guideBattery Storage · 3 min
Solar battery storage prices: compare like-for-like UK quotes
A practical way to compare the installed cost of home storage, from usable capacity and inverter scope to backup and aftercare.
Read the guideBattery Storage · 4 min
Home Battery Storage Without Solar Panels: Is It Worth It?
How battery-only storage works, a transparent savings example including energy losses, and the tariff eligibility checks to make before requesting quotes.
Read the guideBattery Storage · 3 min
Home battery grants and VAT relief: what to check in the UK
Separate battery installation VAT relief from grant funding, and find the official routes relevant to your nation and property.
Read the guide