Step 01
Start with what is on site
The first screen is a plain equipment list. Welfare cabins, buildings, cranes, EV charging, or tell us it is something unusual. No load schedules, no single line diagrams.
POWER IN YOUR POCKET
Site power,sized in minutes.
The UK's first AI powered sizing platform dedicated to power.
Four inputs about a site become a sized, priced and carbon modelled temporary power solution.
- Harlow & Vane
- BRAMFORTH CIVILS
- Kestrel Groundworks
- RIDGEWAY
- Halcyon Live
- MERIDIAN DATA HALLS
Welfare cabinsModular buildingsTower cranesEV chargingCombined sitesEvents powerHybrid battery storageFuel and carbon modellingWelfare cabinsModular buildingsTower cranesEV chargingCombined sitesEvents powerHybrid battery storageFuel and carbon modelling
01Sectors
Built for how UK sitesactually draw power.
Eight sectors / one sizing engine
01
Construction
Welfare, cranes, hoists and tools on one supply, before the grid connection lands.
Read the sector
02
Rail, highways and civils
Night possessions, remote compounds and works with no supply anywhere near them.
Read the sector
03
Events and festivals
Stages, traders, broadcast and campsites, all with a load profile that moves by the hour.
Read the sector
04
Data centres and critical load
Commissioning, load bank testing and bridging power on the tightest tolerances there are.
Read the sector
05
Utilities and grid works
Planned outages and unplanned ones, where the supply itself is the thing being worked on.
Read the sector
06
Industrial shutdowns
Turnarounds and plant moves where every hour of downtime has a number against it.
Read the sector
07
Film, TV and broadcast
Location units and lighting rigs that have to be silent, clean and ready before the call sheet.
Read the sector
08
Modular and healthcare
Classrooms, wards and offices that are occupied from the day they land.
Read the sector
The sizing job that took a week now takes a coffee break.
Live on UK sites
- 24 hour carbon basis
- Hybrid battery modelling
- Cable and distribution schedule
- Named seat security
- UK GDPR aligned
4 min
Typical time to a full quote
24 hr
Carbon model basis, not a 10 hour day
31%
Typical fuel saving with a hybrid battery
0
Load spreadsheets to maintain
00Watch it size a site
Four questions in.A power design out.
Step 02
One question at a time
Sizr then asks only what it needs for the kit you picked. For cabins that is how many and what supply each one takes, which in this example lands at 58.4 kVA connected before diversity.
Step 03
It sizes and prices in the background
Diversity at 0.7, catalogue headroom of ×1.1, a target of 45 kVA, then the next real set up the ladder with a battery that can hold the quiet window. 12 priced lines from the live hire catalogue.
Step 04
A quote you can send
Weekly hire, one off connection and make good, a 26 week project total, and a 24 hour fuel and carbon model. Export the PDF or open the sustainability report from the same screen.
What's on site?
Pick everything that needs power. You can choose more than one.
Welfare cabinsSite offices, canteens, drying rooms
BuildingsExisting structures needing supply
CranesTower cranes, hoists, heavy plant
EV chargingOn-site electric vehicle chargers
Something else
Continue
02The platform
Everything a powerdecision needs.
Sizr is not a calculator with a login. It is the whole path from a question about a site to a defensible, priced and carbon modelled answer.
AI guided intake
Sizr asks what it needs and nothing more, then explains its reasoning in plain English as it goes.
Engineer grade sizing
Diversity factors, duty cycles, inrush and headroom applied consistently on every job, every time.
Hybrid battery modelling
Quiet hours, battery pairing and load shaping modelled over the real duration of the project.
Cabling and distribution
Powerlock, C form and lug tails specified alongside the set, so nothing turns up missing.
Fuel and cost truth
Burn rates and hire pricing over the actual programme, not a rounded weekly guess.
Sustainability reporting
A 24 hour carbon model with litres, CO2e and cost, ready to hand to a client or a principal contractor.
Branded PDF output
A clean quotation and full line item breakdown, generated from the selected option in one click.
Named seat security
One person per seat, single active session, device registration and a full audit trail of exports.
03 / Hybrid
A battery next to the set, modelled properly.
Quiet hours, load shaping and pairing over the real programme, so the fuel and carbon case holds up in a client review.
04 / Welfare
The 7am surge, sized before it bites.
Cabin heating, kettles and dryers arriving together is the load that catches sites out. Sizr accounts for it every time.
05Sustainability
A carbon case yourclient will accept.
Sizr models fuel, cost and CO2e on a 24 hour basis over the real project duration and the quoted load, then shows the same site with and without a hybrid battery. Every assumption is printed, so the numbers survive scrutiny.
- /Litres burned, per day and across the programme
- /CO2e saved by quiet hours and battery pairing
- /Fuel cost delta alongside the hire cost delta
- /Assumptions listed in full on the report footer
Worked example, 26 week welfare village
Earth impact
Sustainability performance report
60 kVA · 41 kVA quoted load · 26 week hire (182 days) · Fuel: Diesel
Positive impact, over this hire
52,290kg CO₂e avoided
Quiet hours are covered by the battery, 19.2 hours a day across the quoted 26 week programme.
Generator only, engine hours4,368 hrs
With hybrid battery874 hrs
Cost saved
£8,589
Fuel saved vs battery hireFuel saved
15,798 L
Diesel not burnedSilent hours
3,494 hrs
80% quieter siteEmissions avoided
52,290 kg
CO₂e24 hour model, day and night load split, catalogue 2025-01-workbook-v1. Assumptions printed in full on the report footer.
This is the report itself, produced by the live carbon model from a real quote. Yours is generated from your own quoted load, silent hours and project duration.
06Pricing
One seat. One price.No surprises.
Professional
£50per user / month
The full sizing platform on a named seat, with a 7 day free trial.
Enterprise
Bespoke
Your catalogue, your rates, your CRM. A Sizr built around your business, with onboarding and SSO.
07Questions
Answeredstraight.
- What does Sizr actually size?
- Generators, hybrid battery storage, cabling and distribution for temporary power on construction, modular, crane, EV charging and events projects across the UK.
- Is the output safe to rely on?
- Sizr applies engineering assumptions transparently and shows every one of them. It is decision support for a competent person, not a replacement for a site specific design signed off by a qualified engineer.
- How much does it cost?
- GBP 50 per user per month on a named seat, with a 7 day free trial. Enterprise is a bespoke build with your own pricing catalogue and CRM integration.
- Can we use our own pricing?
- Yes, on the Enterprise plan. We load your catalogue so every quote comes out at your rates, and we integrate the output into your CRM.
08Sizr Notes
Written by peoplewho order the kit.
Power in your pocket