Skip to content
Energicore

A retrofit plan for every home you manage.

Get started
Choose a home
Interwar semi in section, front on the left, rear on the right. Proposed works drawn: add solar panels, fill the cavity, insulate the solid floor and top up the loft to 270 mm.

Cavity walls, unfilled · Pitched roof, 100 mm loft insulation · Double glazing, gas boiler

  • Proposed work
  • Heat loss

How the engine rates each part

Walls
Good (changed by the works)
Roof
Very good (changed by the works)
Floor
Good (changed by the works)
Windows
Average
Main heating
Average
Controls
Good
Hot water
Average

Proposed works

Biggest saving first

  • Estimated cost £6,120.
  • Estimated cost £1,750, in a range of £1,000 to £2,500.
  • Estimated cost £3,038, in a range of £2,025 to £4,050.
  • Estimated cost £765, in a range of £510 to £1,020.
Total, selected works
£11,673

As it stands

With these works

  1. A92+
  2. B81-91
  3. C69-80
  4. D55-68
  5. E39-54
  6. F21-38
  7. G1-20

As it stands: band D, score 64. With these works: band C, score 75.

Interwar semi: rating, energy and energy cost a year, as it stands and with the works selected, and what the works save
RatingEnergy a year (kWh)Energy cost a year (£)
As it standsD6417,223Gas 14,335Electricity 2,888£2,120
With these worksC7513,639Gas 10,751Electricity 2,888£1,474
Saving a year£646
Carbon saved a year860 kg

Panels generate 1,971 kWh a year

Interwar semi, with these works: band C, score 75, 13,639 kWh and £1,474 a year. Works £11,673, saving £646 a year.

Engine results, with bills at Ofgem's July 2026 price cap and works costs before grants. How the predictions are calculated

Energicore makes its own energy prediction for each property, checks it against any EPC on the register, and ranks the measures by the money and carbon they save. You issue the plan under your organisation's name.

How it works in your organisation

For councils, housing associations, advice charities and retrofit advisors.

Two of these homes score 64 today and need entirely different work

The interwar semi and the system-built flat both sit in band D on 64 points, and the works that cut their bills have nothing in common. The semi is a gas-heated house with an unfilled cavity and a roof that can take panels; the flat runs on storage heaters, with homes above and below it.

Schedule of homes

  • Victorian terrace

    • Pre-1900 mid-terrace, 85 m²
    • Solid brick walls, uninsulated
    • Pitched roof, uninsulated
    • Single glazing, gas boiler
    Rating now
    Band D, score 57
    With all these works
    Band C, score 74Saves £570 a year
    Demand in kWh a year
    • Mains gas17,2821.8× typical
    • Electricity2,8241.1× typical
    Works, largest saving first
    • Insulate the loft to 270 mm
    • Insulate the walls from inside
    • Fit new double glazing
    • Insulate under the floorboards

  • Interwar semi

    • 1930s semi-detached, 90 m²
    • Cavity walls, unfilled
    • Pitched roof, 100 mm loft insulation
    • Double glazing, gas boiler
    Rating now
    Band D, score 64
    With all these works
    Band C, score 75Saves £646 a year

    Same score as the system-built flat

    Demand in kWh a year
    • Mains gas14,3351.5× typical
    • Electricity2,8881.2× typical
    Works, largest saving first
    • Add solar panels
    • Fill the cavity
    • Insulate the solid floor
    • Top up the loft to 270 mm

  • System-built flat

    • 1960s mid-floor flat, 60 m²
    • System-built walls, uninsulated
    • Dwelling above and below
    • Double glazing, storage heaters
    Rating now
    Band D, score 64
    With all these works
    Band C, score 80Saves £1,124 a year

    Same score as the interwar semi

    Demand in kWh a year
    • Electricity10,8863.2× typical
    Works, largest saving first
    • Insulate the walls from inside
    • Insulate the hot water cylinder
    • Fit high heat retention storage heaters
    • Replace the old double glazing

  • Modern terrace

    • 2003-2006 mid-terrace, 80 m²
    • Cavity walls, filled
    • Pitched roof, 270 mm loft insulation
    • Double glazing, gas boiler
    Rating now
    Band C, score 76
    With all these works
    Band C, score 79Saves £336 a year
    Demand in kWh a year
    • Mains gas8,0260.8× typical
    • Electricity2,7601.1× typical
    Works, largest saving first
    • Add solar panels

“Typical” is Ofgem's typical use for a medium household, fuel by fuel.

From stock list to issued plan

Energicore runs the same engine on every property you add and turns each result into a plan your organisation issues. This is the start of one, for the system-built flat in the schedule above.

Prepared by

Your organisation(key note 1)

Status

Illustrative

Property

System-built flat1960s mid-floor flat, 60 m²Double glazing, storage heaters

As it stands

Band D, score 64Bill £3,051 a year

Figures

Energicore engine, run 12 October 2026Bills at Ofgem's July 2026 price cap
Works in order(key note 2)Costs are estimates for each work on its own. Every other figure is with that work and every one above it in place.
WorkRating afterSaving a year
As it stands10,886 kWh a yearBand D, score 64No saving
Insulate the walls from inside£3,750 to fit8,801 kWh a yearBand C, score 72£544
Insulate the hot water cylinder£20 to fit7,465 kWh a yearBand C, score 77£893
Fit high heat retention storage heaters£3,450 to fit6,975 kWh a yearBand C, score 79£1,021
Replace the old double glazing£5,914 to fit6,580 kWh a yearBand C, score 80£1,124
Total, all four works£13,134 to fit£1,124

Grant eligibility

Checked for this household; indicative

Issued as

Plan page and PDF(key note 3)

Key to the sheet

  1. Your logo, colours and name appear on the plan page and on the PDF.

  2. The works are in order of what each saves a year on its own, largest first.

  3. The household opens the plan at your organisation's own address on energicore.app, such as your‑organisation.energicore.app, or downloads it as a PDF.

What else Energicore does

Organisation analytics
Band distribution, homes that could reach band C, and breakdowns by postcode area, deprivation decile, property type, age, main fuel and advisor. Each panel downloads as a CSV.
Plans built to an objective
Aim for a target band, a budget or the minimum standard for rented homes, take the most savings or the most carbon, choose every measure yourself, or describe a goal and let the AI assistant draft the plan.
Indicative grant eligibility
Each household is checked against scheme criteria, including ECO4, the Boiler Upgrade Scheme and Warm Homes: Local Grant.
Tariffs and solar
Enter a household's own tariff, time-of-use rates included, so its cost estimates use what it pays. Size solar panels for the roof and see what they generate and export.
Plan pages and PDFs
Every plan is a web page and a PDF, both in your branding.
Teams and several organisations
Invite colleagues as admins or members; the role decides which properties their lists show and what they can change. Advisors can belong to several organisations and switch between them.
Audit trail
Owners and admins can read a log of successful sign-ins, conversations with the AI assistant, and each time an admin opens a household's conversation.

Branding, roles and procurement are covered in How it works in your organisation.

Notes

  1. Every property gets Energicore's own RdSAP-aligned prediction, whether or not it has a certificate. How the predictions are calculated

  2. Where a certificate is lodged on the government EPC register, Energicore reads it and cross-checks its prediction against it.

  3. Grant and scheme eligibility is indicative: the scheme's rules at the time of application decide.

  4. Cyber Essentials certified. Registered with the ICO, ZB909895.

  5. Platform data is hosted in the UK and the EEA. Security and compliance

Start with a handful of your own properties

Add a few homes and read the plans Energicore produces for them before you decide. It runs in the browser, with nothing to install.

Get startedTalk to us