Quick calculator - NetZeroDad Energy Upgrade Modeller

About your home

Estimates are fine

Name this home

What kind of home is it?

Bedrooms

People living there

What are the ground floors like?

Where is it?

Insulation and heating

What insulation does it have? (Tick everything the home already has.)

Double glazing Basic loft insulation (around 100mm) Modern loft insulation (around 300mm) Cavity wall insulation Extra internal or external wall insulation Triple glazing/Passivhaus-type measures

How do you heat it?

What type of hob do you have?

Is anyone in during the day?

Upgrades you already have

If you already have a heat pump, choose it on the previous page. Skip anything you don't have.

Solar panels

Home battery

Your current energy

I know roughly what we spend each month

We'll estimate it from the size of your home.

Electricity per month£ Gas per month£

Who supplies your electricity?

What kind of tariff?

Check or change the rates (optional: use your latest bill)

We start from typical figures. Your bill shows the real ones: look for the unit rate (pence per kWh) and the standing charge (pence per day).

Electricity standing chargep/day Electricity pricep/kWh Cheap-period pricep/kWh Peak price (evening)p/kWh Gas standing chargep/day Gas pricep/kWh Solar export pricep/kWh

Now and with your plan

Try some upgrades

What it could mean

Cost by month

Shown to the nearest £10. Winter months cost more because of heating; solar and a heat pump change the shape.

These are rough, rounded estimates for planning, not quotes. Prices and rates change, and a survey or installer quote will give you the real figures.