Utility Digitalisation & Automation
Landmark project · Global · AMI 2.0

Enel Open Meter

45 million metersItaly

The first nationwide second-generation AMI — 15-minute data and consumer-facing interfaces at 45 million endpoints.

Footage · Occhio alla Notizia · YouTube

Key numbers

approx. 45 million

Meters replaced

Nationwide second-gen AMI coverage

15 minutes

Data granularity

Enables dynamic tariffs, demand response

approx. 5-6 years

Rollout duration

2016 pilot to 2021-22 near-completion

approx. €3-4 billion

Estimated investment

Widely reported capex range for Gen2 rollout

approx. 32 million

Prior-gen legacy fleet

First AMI generation replaced by this programme

In-home + web/app

Consumer interfaces

Near-real-time usage visibility for customers

Timeline
  1. 2001-2005

    Enel deploys world's first mass smart-meter fleet (approx. 32 million first-gen meters), setting the baseline AMI standard globally.

  2. 2016

    Regulator ARERA mandates second-generation meters; Enel launches Open Meter pilot with open communication protocols.

  3. 2017-2018

    National rollout scales region by region, prioritising areas with ageing first-gen infrastructure.

  4. 2019

    15-minute interval data and consumer in-home displays activated for growing share of replaced meters.

  5. 2021

    Rollout largely completed; approx. 45 million endpoints transitioned to Gen2 AMI nationwide.

  6. 2022-2023

    Granular data used to pilot dynamic tariffs and demand-response programmes across the network.

Why it matters

Enel's second-generation AMI rollout across Italy replaced the world's first mass smart-meter fleet with 15-minute interval, interoperable meters at approx. 45 million points. For Indian developers, lenders and DISCOMs pursuing RDSS-linked smart metering, it is the clearest precedent for sequencing multi-year national rollouts, structuring tariff-based capex recovery, and building consumer-facing data platforms that regulators and financiers can trust at scale.

The India angle

India's RDSS-driven Smart Meter National Programme targets over 250 million prepaid smart meters via the AMISP/TOTEX PPP model, with DISCOMs paying per functional meter-month. Enel's experience argues for DLMS/COSEM-based open protocols in tender specifications to avoid lock-in, phased state/circle-wise rollout tied to DISCOM readiness, and MDM/cybersecurity capex bundled into AMISP scope. As India moves toward 15-minute ABT scheduling and time-of-day tariffs, regulators (CERC/SERCs) can draw on Italy's tariff-recovery precedent to give lenders and green-finance investors comparable revenue certainty.

What it teaches

Engineering, procurement and finance lessons

01

Open protocols prevent vendor lock-in

Specifying open, interoperable communication standards rather than a single vendor's proprietary stack allowed multiple manufacturers to compete on meter supply, protecting long-term procurement costs and spare-parts risk over a multi-decade asset life.

02

Tariff-based recovery de-risks financing

Regulatory pre-approval of capex recovery through distribution tariffs gave lenders revenue certainty before rollout began, a structure replicable wherever a regulator can commit to cost-reflective tariff pass-through ahead of large metering capex.

03

Phase geographically, not by meter count alone

Sequencing replacement by region balanced workforce logistics, local grid readiness and cash-flow timing, avoiding the installation bottlenecks and quality lapses common in ad-hoc, function-first rollouts.

04

Data platform must precede meter data

15-minute granularity is only useful if meter data management, billing and cybersecurity systems are upgraded in parallel; metering hardware procurement without matching IT/OT investment stalls value realisation.

05

Consumer engagement is a separate workstream

In-home displays and portals did not automatically change consumption behaviour; utilities needed dedicated communication campaigns, proving that behavioural outcomes require budget and design distinct from the metering contract itself.

Sources · IEA · ARERA (Italian Regulatory Authority for Energy, Networks and Environment) · Enel Group · Smart Energy International · Metering.com

How Growthifye helps
  • Structuring AMISP/RESCO-style PPP and payment-security mechanisms aligned to RDSS loss-reduction and functionality milestones.
  • Advising DISCOMs and lenders on open-protocol meter specifications and MDM/cybersecurity architecture to prevent vendor lock-in.
  • Packaging blended and green finance structures using tariff-based cost-recovery precedents to strengthen lender confidence.

We use essential cookies to run the site and, with your consent, track your activity to personalise your learning and recommendations. See our Privacy Policy.