Battery Storage Payback Calculator
Calculate how long a home battery storage system takes to pay back and your lifetime savings
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Energy calculators that help you cut your bills
Solar payback, EV savings, smart meter tariffs, and home energy efficiency.
Boiler Replacement Payback Calculator
Calculate how long a new boiler takes to pay back through energy savings
Business Carbon Footprint Calculator
Calculate your business carbon footprint from energy, travel, and operations
Business Energy Cost Calculator
Estimate UK business electricity and gas costs from kWh usage, unit rates and standing charges
Double Glazing Payback Calculator
Calculate the payback period and annual savings from upgrading to double or triple glazing
Electricity Cost Calculator
Calculate UK appliance electricity running cost from watts, kWh, usage time and unit rate
Energy Bill Calculator
Calculate your estimated gas and electricity bill based on your usage and current rates
Energy Bill Gas and Standing Charge Calculator
Calculate gas-only energy costs and see how standing charges affect your annual bill
Energy Direct Debit Calculator
Check if your energy direct debit is correct and calculate the right amount to avoid debt or credit
Home Energy Audit Calculator
Identify where your home loses energy and calculate the savings from common improvements
Insulation Savings Calculator
Calculate the annual savings and payback period from adding or improving insulation in your home
LED Lighting Savings Calculator
Calculate your annual savings from switching to LED bulbs
Smart Meter Savings Calculator
Calculate how much you could save by switching to a smart meter and time-of-use tariff
Smart Thermostat Savings Calculator
Calculate your annual savings from installing a smart thermostat
Solar Panel Payback Calculator
Calculate how long solar panels take to pay back their cost and your lifetime savings
Solar ROI Calculator
Calculate solar panel return on investment, annualised returns, and 25-year profit
Water Meter Calculator
Find out whether a water meter would save you money compared to unmetered charges
Water Usage Calculator
Calculate your household daily water usage and compare against the UK average
Wind Turbine Payback Calculator
Calculate the payback period and lifetime savings of a small domestic wind turbine
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Consumer guidance on bills, tariffs, suppliers, and support.
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Government information on home energy efficiency support.