ESB Smart Meter HDF Analyzer & Irish Tariff Engine
Upload your official 30-minute interval CSV from myaccount.esbnetworks.ie. Instantly simulate annual bills across every active Irish smart electricity plan, optimize EV night boost charging, and audit peak demand—100% client-side with zero cloud uploads.
Your ESB Networks consumption data never leaves your browser. Parsing, data sanitization, and mathematical modeling occur entirely inside local device memory using client-side JavaScript. All MPRN identifiers and meter serial numbers are immediately stripped on row ingest. Zero telemetry is sent across the network.
Translate your intervals into vampire standby waste (€/yr), dinner rush peak penalties, solar hot-water cylinder diversion vs. export, and battery payback.
Drop your ESB Networks export file(s) here, or click to browse
100% private in-browser analysis. Supports single or multiple files (30-min kWh, 30-min kW, Daily TOU, and Daily Import/Export) with cross-file ledger verification.
Detected Household Hardware Archetype
Analyzing Telemetry...Deterministic physical signature recognition based on your 30-minute interval readings.
Scanning active export...
Scanning peak shaving...
Scanning 7kW L2 charging...
Scanning seasonal delta...
Under Section 216D Taxes Consolidation Act 1997, the first €400 of annual residential microgeneration export income is 100% exempt from Irish Income Tax, PRSI, and USC.
Household Energy Intelligence & Load Analysis
€434/yr spent while sleeping (24.1% of total import)
Habit: Moderate (Adds ~€264/yr in peak penalty)
Aligns with 2am–6am window. Shift remaining load to cut ~€120/yr.
Exported back to grid. A diverter yields higher value than CEG.
Interactive Telemetry HubSynthetic Profile
Toggle between diurnal load curves, monthly energy balance, and load duration fingerprint.
Showing daily register totals. To evaluate 2-hour or 4-hour EV boost slots, upload a 30-minute calculated kWh file.
Evening Appliance De-Spiking
Your evening peak demand reaches high levels during statutory peak hours. Shifting laundry or EV charging outside this 2-hour window saves an estimated €84 to €160/year.
Night-Boost Battery Charging
Your persistent continuous standby draw indicates steady refrigeration and baseload loads. You are an ideal candidate for night-boost battery charging at off-peak rates.
Hot Water Cylinder Capture
Surplus solar energy exported to the grid at CEG rates yields less value than heating domestic water. An immersion diverter offsets expensive heating oil or gas.
Price Hike Alert: Supplier is adjusting rates
Statutory 30-day notice active · Effective soonBased on your half-hourly usage, this revision will cost your household+€0.00/year(Standing Charge: +€0.00, Peak/Day: +€0.00, EV Boost: +€0.00).
*Statutory 9% VAT is included strictly across gross supply charges before Clean Export Guarantee (CEG) export credits.
Evaluating Standard Smart tariffs. To evaluate specialized EV Night Boost plans (e.g., 2am–4am), please upload the 30-minute interval file. Pre-aggregated daily files combine night consumption into a single 23:00–08:00 block.
Optimal Irish Tariff Matches
17,520 Half-Hour RecalculatedStrict algorithm simulation incorporating half-hourly standing charges, carbon taxes, and exact time-of-use distribution.
Recent 30-Minute Telemetry Feed
Audited half-hour interval timestamps from ESB Networks National Metering Database
How to Download Your HDF File from ESB Networks
Every Irish domestic property equipped with a smart electricity meter can download free, un-throttled historical interval telemetry directly from ESB Networks. Follow these 4 steps to retrieve your official Harmonised Downloadable File (HDF):
Locate MPRN & Register
Find your 11-digit Meter Point Reference Number (MPRN) on the top-right of your bill from Electric Ireland, Bord Gáis, Energia, or SSE. Log in or create an account at myaccount.esbnetworks.ie.
Open Downloads Tab
In your ESB dashboard, navigate to "My Energy Consumption" and select the "Downloads" tab. This is where ESB Networks exposes your raw half-hour interval smart meter records.
Select 30-Min Calculated kWh
Choose "30-minute readings in calculated kWh (CSV)" for accurate EV night boost and tariff modeling. Alternatively, select "30-minute readings in kW" to audit peak electrical demand.
Drop CSV Into WattMatrix
Drag and drop your unedited .csv file into the dropzone above. All parsing and billing simulations execute immediately in your browser runtime—zero email registration or cloud upload required.
Understanding the 4 Official ESB Networks Download Formats
ESB Networks publishes 4 distinct file structures under the Harmonised Downloadable File (HDF) standard. WattMatrix features an auto-detecting parser that ingests each format and unlocks its specialized engineering workflow:
| ESB Portal Format Name | Measurement Unit | Resolution | Analytical Application in WattMatrix |
|---|---|---|---|
| 30-minute readings in calculated kWh (CSV)Primary recommended format | Energy Volume (kWh) | Half-Hourly (48 intervals/day) | Best for dynamic EV super-off-peak boost modeling (e.g. Energia 2am–6am vs Electric Ireland 2am–4am), peak 17:00–19:00 load pricing, and microgen solar export valuation. |
| 30-minute readings in kW (CSV)Electrical stress telemetry | Average Power Demand (kW) | Half-Hourly (48 intervals/day) | Measures instantaneous electrical demand stress, calculates always-on 03:00–05:00 phantom baseload, and verifies Maximum Import Capacity (MIC) headroom. |
| Daily snapshot of day, night and peak usage (CSV)Pre-aggregated TOU buckets | Aggregated kWh per band | Daily (1 row per calendar day) | Evaluates standard 3-rate smart plans (Day, Night 23:00–08:00, Peak 17:00–19:00). Note: cannot evaluate specialized 2-hour or 4-hour EV night boost windows. |
| Daily snapshot of total usage and export (CSV)Macro microgen ledger | Total Import & Export (kWh) | Daily (1 row per calendar day) | Computes multi-month net self-consumption ratios and verifies annual Clean Export Guarantee (CEG) feed-in cash payments across Irish energy providers. |
Why Client-Side Parsing Matters for GDPR & Energy Privacy
Most online tariff comparison calculators require users to submit an email address, phone number, and raw meter files to remote cloud servers. Here is why WattMatrix engineered an in-browser execution sandbox instead:
MPRN is Protected Personal Data
Under Irish Data Protection Commission (DPC) guidance and EU GDPR, your 11-digit MPRN permanently identifies your domestic dwelling. High-frequency 30-minute interval readings expose exact household occupancy, sleep patterns, and daily habits.
Zero Lead Generation or Broker Resale
Traditional energy switching sites capture your interval profile to package your contact info into qualified sales leads for solar installers or call centers. WattMatrix has zero sales reps, zero affiliate tracking walls, and zero lead capture forms.
Local In-Browser Memory Sandbox
WattMatrix processes your CSV strictly inside your browser runtime using the HTML5 File API and JavaScript. Your MPRN and serial numbers are purged immediately at line ingest. No telemetry, IP logging, or telemetry beacons ever contact a remote server.
ESB Smart Meter & Irish Tariff Comparison FAQ
Which ESB Networks file should I download for smart tariffs?▾
Always download the "30-minute readings in calculated kWh (CSV)" file. This format preserves the granular 48 half-hour intervals per day required to test specialized EV night boost schedules (e.g., 2am–4am vs 2am–6am) and statutory peak window consumption (17:00–19:00). Pre-aggregated daily snapshots compress all overnight consumption into a single 23:00–08:00 block, making accurate EV tariff evaluation impossible.
How do specialized EV boost windows (like 2am–4am) affect my bill?▾
Modern Irish EV tariffs offer ultra-cheap super-off-peak electricity (between 7.0c and 9.5c/kWh) during a tight 2 to 4-hour window (e.g., Electric Ireland Home Electric Plus 2am–4am; Energia EV Drive 2am–6am; Bord Gáis Smart EV 2am–5am). The WattMatrix engine maps your actual historical consumption across each 30-minute slot to determine whether shifting EV charging or domestic battery cycling into these super-off-peak windows outweighs the slightly higher daytime unit rate.
Is my smart meter data stored or sent to a server?▾
No. WattMatrix operates on a 100% client-side privacy architecture. Your CSV file is read directly into your device's browser memory via the HTML5 FileReader API. The ingestion scanner strips your 11-digit MPRN and meter serial numbers at row ingest before performing billing calculations. No files, interval arrays, or user telemetry are ever uploaded to a server, database, or analytics tracker.
What is the difference between kW and calculated kWh files?▾
The "calculated kWh" file records active electrical energy consumed during each 30-minute interval (Power × Time), matching your utility bill's billing units. The "kW" file records the average active power rate across that half-hour (P = 2 × kWh). Under ESB Networks metering, both files contain identical data: neither captures sub-interval instantaneous spikes (such as a 3-minute kettle boil), but both establish a proven lower bound on sustained 30-minute electrical demand (≥ X kW). WattMatrix accepts either or folds both into a unified analysis store.
How are standing charges, PSO levy, and VAT accounted for?▾
Calculations adhere strictly to Commission for Regulation of Utilities (CRU) guidelines and Irish Revenue Commissioners tax law. We apply provider-specific Urban (DG1) or Rural (DG2) annual standing charges, the statutory annual PSO levy (€6.12 ex-VAT for 2026/2027), and statutory 9% domestic VAT on gross supply charges. Clean Export Guarantee (CEG) credits and Year 1 promotional welcome cashbacks are deducted strictly post-VAT, with notes flagging the statutory €400/year tax-exempt microgeneration threshold under Section 216D Taxes Consolidation Act 1997.
Explore the WattMatrix Irish Clean Energy Suite
Translate your measured smart meter telemetry into engineered residential energy investments:
Diverter vs. CEG Export
Calculate whether diverting solar into your immersion beats your current CEG export rate.
Solar & Battery Sizer
Simulate adding a home battery to shift your peak 17:00–19:00 smart meter load.
EV Smart Charging Engine
Optimize EV smart charging schedules around Irish night boost tariffs.
Domestic Heat Pump & HLI
Model heat pump electrical consumption against SEAI fabric-first thermal demand.