EMEX 2026
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Case study · City of London Corporation
14 years of utility history rebuilt in 10 weeks
The City of London Corporation partnered with Etainabl for utility invoice validation and reporting. We rebuilt its utility history back to 2012 from six sources: the old bureau export, supplier portals, EDI files, 46 password-protected PPA workbooks and spreadsheets. Every delivery was reconciled to the supplier's totals to the penny, and the current £18.0m of electricity and gas invoices matched exactly.
invoices rebuilt, going back to 2012
meters across 312 sites
a year in unbilled Barbican Estate supplies found (estimated)
tCO₂e a year of false Scope 2 emissions kept out of the footprint (approx.)
After a lengthy procurement process, I'm pleased to announce the City will be partnering with Etainabl to support us with utility invoice validation and reporting.
Fixed the errors in the historical data
1,234 legacy credit notes had reversed the cost but not the kWh, overstating consumption by about 40 GWh. 4,124 group bills had every meter's cost on a single meter, so these were split into 8,828 per-meter invoices.
Found money in the first accrual run
The first monthly run accrued £2.40m across 729 accounts. It found 16 Barbican Estate supplies that hadn't been billed since May and flagged 65 accounts with no invoices at all. Bill validation also caught a duplicate water bill, CCL charged on exempt meters and a water retail overcharge.
Got payments under control
Around 700 validated invoices a month now reach the City's Accounts Payable file within three days of receipt. Before this, late payment exposure had been estimated at about £40k a month. Accruals now run monthly rather than once a year.
A carbon baseline they can trust
About 210 GWh of solar PPA generation, 791k half-hourly heat and chilled water readings and the Citigen district energy contracts were brought in. The 2027 net zero target is now measured against a real baseline.
We automatically bring all your datainto one platform
Meters, invoices, portals, and sensors: Etainabl connects at the source and keeps the data flowing in.
8 ingestion channels feeding one source of truth
One clean dataset.Everything else follows.
Every module below runs on the data you just saw flowing in. No re-keying, no exports, no lag.
Etainabl gave us one auditable view of energy and carbon across the whole portfolio. We caught billing errors in the first month that more than paid for the platform.
Head of Sustainability
National commercial property portfolio
Etainabl at a glance
More customer stories
Trusted across commercial property
From a single landmark building to a portfolio of hundreds of sites, here's how property teams use Etainabl.
Dorrington · The Crane Building
A complete dataset to plan the route to net zero
Fragmented utility and waste data made it impossible to see how The Crane Building was really performing. Etainabl fitted IoT devices to the gas and water meters, secured half-hourly tenant electricity data, automated waste reporting and brought in the landlord electricity and solar PV feeds. Dorrington now has a complete, high-quality dataset, better tenant engagement and a model it can roll out across its wider portfolio.
Shaftesbury Capital
One source of truth for 430+ sites
With ESG data spread across systems, property managers and tenants, Shaftesbury chose Etainabl as its central data platform for 430+ sites and 2,300+ meters. Gridfetch integration unlocked tenant utility data for accurate Scope 3 reporting, multi-layer validation made the numbers audit-ready, and less manual admin freed the team to focus on strategy.
Let's pick up where we left off at EMEX
Book a 30-minute demo and we'll show you how Etainabl would work across your own portfolio, from bill validation to audit-ready carbon reporting.
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