Make your home work harder.
Understand your energy efficiency, explore solar potential, and find ways to reduce your bills, all from your postcode.
Know Your EPC Rating
See your current energy efficiency rating, what it means for your bills, and how it compares to nearby homes.
Solar Potential
Find out how much energy solar panels could generate on your roof, based on your location and orientation.
Cut Your Bills
Get personalised improvement recommendations ranked by cost and impact to reduce your annual energy spend.
Live Grid Data
See real-time carbon intensity for your region so you can time energy use for lower emissions and costs.
How Postcode Energy helps homeowners
The platform features that matter most for your situation.
Energy reports
Your home’s complete energy profile — EPC rating, estimated costs, and tailored improvement recommendations that show you where your money goes and how to spend less.
Saved properties
Save your home to your dashboard and revisit your energy data any time. Track changes as you make improvements and see the impact over time.
Property comparison
Basic+Thinking of moving? Compare your current home’s energy costs with properties you’re considering, so energy bills don’t surprise you after the move.
Live grid data
See when your local electricity is cleanest and cheapest — so you can time your washing machine, EV charging, or heating for lower bills and lower carbon.
Solar potential
Find out what solar panels could generate at your location, based on satellite irradiance data for your exact postcode. Understand payback before you invest.
EPC history
Plus+See every EPC certificate your home has ever had — and track how efficiency has improved with each assessment. Proof that your improvements are paying off.
Track improvements over time
Basic+See your full EPC certificate history and how your home's efficiency has changed with each assessment.
Every improvement you make, from loft insulation to a new boiler, shows up in your EPC history. Track your progress and see how your investment is paying off.
See how your costs compare to the area average and what your bills could be if you made the recommended improvements.
Understand your energy costs
EPC-estimated costs broken down by heating, hot water, and lighting so you know where the money goes.
Check your environment
Air quality, grid carbon intensity, and environmental data for your area. The things that affect your home beyond the energy bill.
Combined environmental data from DEFRA, the Environment Agency, and other official sources, all in one place.
Frequently Asked Questions
How can I improve my home's EPC rating?
Common improvements include adding loft or cavity wall insulation, upgrading to a condensing boiler or heat pump, installing double or triple glazing, and adding solar panels. Our reports show you which improvements would have the biggest impact on your specific property.
Is solar worth it for my home?
It depends on your roof orientation, local shading, and electricity usage. Postcode Energy uses PVGIS satellite data to estimate your solar generation potential. South-facing roofs in England typically generate 800-1000 kWh per kWp installed per year.
How accurate are the energy cost estimates?
EPC cost estimates use standardised assumptions about occupancy and heating patterns, so they're best used for comparing properties rather than predicting exact bills. Alongside your EPC rating, we show live energy tariff rates for your region so you can see what typical bills look like today.
Do I need a new EPC?
EPCs are valid for 10 years. You'll need a new one if you're selling or renting, or if you've made significant improvements and want your rating updated. Our reports show when your current certificate expires.