Make smarter energy decisions

Heating Cost Calculator

Estimate running costs for direct electric heating using UK tariff assumptions.

Solar Savings Calculator

Model solar generation, bill savings, export income, and simple payback.

Grant Checker

Check likely eligibility for national home energy grants and support schemes.

Loft Insulation Calculator

Estimate bill savings from topping up loft insulation using UK-style assumptions.

Energy Bill Breakdown

Understand where energy costs go and spot the biggest saving opportunities.

Carbon Savings Estimator

Estimate household emissions from heating, electricity, and retrofit decisions.

Browse by topic

Find the right section for your project

Move from quick calculators to broader guidance with clean, topic-led hubs covering the most important retrofit decisions.

Topic hub

Heating

Heat pumps, radiators, boilers, and efficient electric heating guidance.

Topic hub

Renewables

Solar PV, batteries, inverters, and low-carbon generation options.

Topic hub

Grants

Funding routes, eligibility checks, and official application pathways.

Topic hub

Energy Saving

Practical efficiency upgrades to reduce bills and improve comfort.

Topic hub

Building Fabric

Insulation, windows, airtightness, and thermal performance guidance.

Topic hub

Commercial

Tools and frameworks for business energy performance planning.