Energy — United Kingdom
Compare energy quantities, installed capacity and cash flows separately. Supplier tariffs, local design conditions and confirmed incentives belong in separate inputs; electricity used and electricity exported need not have the same value. This directory groups energy tools for United Kingdom; individual pages state their supported inputs and limitations.
Start with these tools
Solar Savings Calculator — United Kingdom
Estimate the financial effect of a specified rooftop solar scenario, with exported electricity valued separately from electricity used in the home. GBP planning view; stated limitations apply.
Heat Pump Sizing Calculator — United Kingdom
Translate an already assessed design load into a manufacturer-rating requirement at the local cold-weather performance point. GBP planning view; stated limitations apply.
Insulation Upgrade Calculator — United Kingdom
Estimate the effect of an explicitly specified resistance upgrade on a building surface. GBP planning view; stated limitations apply.
Solar Panel Sizing Calculator — United Kingdom
Translate a site-specific annual energy target into a rounded panel count and a transparent material-cost scenario. GBP planning view; stated limitations apply.
Solar Battery Sizing Calculator — United Kingdom
Size an energy reserve for an explicitly selected critical load, rather than assume that the battery can supply every household circuit. GBP planning view; stated limitations apply.
Open a tool, check the displayed formula and enter values from the same period and measurement system. Currency defaults to GBP. Where a form offers metric and imperial units, changing the selector converts the entered measurements rather than relabeling the same number. Dated reference components are shown with their sources; unverified rules and prices are not silently treated as current local facts. Save distinct assumptions as separate scenarios and compare their inputs before their outputs. Shared links can disclose the input values they contain. The implemented expansion is still subject to its published scope-acceptance checks, including missing regional datasets and production-browser verification.
solar
Solar Savings Calculator — United Kingdom
Estimate the financial effect of a specified rooftop solar scenario, with exported electricity valued separately from electricity used in the home. GBP planning view; stated limitations apply.
Solar Panel Sizing Calculator — United Kingdom
Translate a site-specific annual energy target into a rounded panel count and a transparent material-cost scenario. GBP planning view; stated limitations apply.
Solar Battery Sizing Calculator — United Kingdom
Size an energy reserve for an explicitly selected critical load, rather than assume that the battery can supply every household circuit. GBP planning view; stated limitations apply.
Solar Payback Calculator — United Kingdom
Compare a simple first-year payback with a discounted cash-flow model that explicitly includes replacement and declining generation. GBP planning view; stated limitations apply.
Home Battery Economics Calculator — United Kingdom
Value stored electricity after charging losses and the opportunity cost of the charging energy. GBP planning view; stated limitations apply.
heating cooling
Heat Pump Sizing Calculator — United Kingdom
Translate an already assessed design load into a manufacturer-rating requirement at the local cold-weather performance point. GBP planning view; stated limitations apply.
Heating Cost Comparison Calculator — United Kingdom
Put electricity and the comparison fuel on the same delivered-heat basis instead of comparing unlike fuel units. GBP planning view; stated limitations apply.
Furnace Replacement Calculator — United Kingdom
Compare the fuel-cost consequence of two seasonal efficiencies at the same useful heating load. GBP planning view; stated limitations apply.
Electric Radiant Floor Calculator — United Kingdom
Calculate the connected load and a scheduled-use energy scenario for electric resistance floor heating. GBP planning view; stated limitations apply.
Room Heat Loss Calculator — United Kingdom
Estimate steady-state room heat loss from entered fabric properties, air exchange and a local outdoor design temperature. GBP planning view; stated limitations apply.
insulation sub
Insulation Upgrade Calculator — United Kingdom
Estimate the effect of an explicitly specified resistance upgrade on a building surface. GBP planning view; stated limitations apply.
Attic Insulation Calculator — United Kingdom
Estimate attic insulation quantity and heating savings while keeping moisture, ventilation and local resistance requirements outside the arithmetic. GBP planning view; stated limitations apply.
energy costs
Frequently asked questions
Does this directory imply full local-rule coverage?
No. Each calculator states its scope. An implemented mathematical worksheet is not the same as a fully researched statutory calculator.
Where do the amounts come from?
Either your inputs or an explicitly named and dated reference component. Illustrative defaults are not supplier quotes or market averages.
Can I compare assumptions?
Use the individual calculator’s scenario controls. Read its formula, period, units and limitations before comparing results.