Enel Open Meter
The first nationwide second-generation AMI — 15-minute data and consumer-facing interfaces at 45 million endpoints.
Footage · Occhio alla Notizia · YouTube
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
2001-2005
Enel deploys world's first mass smart-meter fleet (approx. 32 million first-gen meters), setting the baseline AMI standard globally.
2016
Regulator ARERA mandates second-generation meters; Enel launches Open Meter pilot with open communication protocols.
2017-2018
National rollout scales region by region, prioritising areas with ageing first-gen infrastructure.
2019
15-minute interval data and consumer in-home displays activated for growing share of replaced meters.
2021
Rollout largely completed; approx. 45 million endpoints transitioned to Gen2 AMI nationwide.
2022-2023
Granular data used to pilot dynamic tariffs and demand-response programmes across the network.
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.
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.
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
- 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.
