Release Notes

Your device schedules now survive a price outage — when the electricity exchange fails to publish, we calculate the missing hours from our own historical price data so heaters, boilers and chargers keep switching at sensible times instead of silently staying off. These prices are clearly marked on the chart and in the table, and are never used to calculate your savings.

A second source for day-ahead prices. ENTSO-E publishes the same prices through two systems, and on 31 August one of them went down for two days while the other kept working. Elewatt now automatically falls back to the second source, so a repeat of that outage no longer leaves the site without prices.

You get told what is happening. If your scheduled devices are running on calculated prices, you receive one email explaining it — and a second one as soon as real prices are back and schedules are exact again.

A clear notice on the price page and on every device page whenever a day is incomplete, instead of a chart that quietly showed only a few hours.

Savings are now calculated only from real measured energy. If a device does not report its own consumption we say so plainly instead of showing an estimate — testing against three months of real meter data showed estimates could be off by 63%, and differ 3× between two identical heaters.

Daikin heat pumps now report real measured savings, read from the unit's own energy meter.

Savings count only devices with automation switched on, and only the schedule slots that actually ran — so the figure reflects what Elewatt genuinely did for you.

One-time 'action required' emails when an integration needs reconnecting, with a direct link to fix it, so a dead connection no longer goes unnoticed for weeks.

Subscription plans are live — Free, Home and Company — with self-service cancellation, refund-based downgrades, and clear per-plan device and contract limits.

Device savings across all seven integrations, with a monthly and yearly view, dual baselines and a tooltip explaining exactly how each figure is calculated.

Daikin reconnects gracefully when its authorisation expires: the connection is auto-disabled, you get a reconnect link, and your devices and settings are left untouched.

Early accounts keep everything free for life — existing users from before plans launched are unaffected by any limit.

New 'What Is a Smart Grid' education article with its own savings calculator, plus a balcony solar and battery backup guide, and search and filtering on the education hub.

A savings estimator on the pricing page that uses real spot prices and grid fees for your country, so plan value is shown in your own currency rather than as a generic claim.

The installer directory is live, connecting you with installers for the hardware Elewatt controls.

Twelve new countries: Italy, Belgium, Austria, Czechia, Portugal, Slovakia, Hungary, Slovenia, Greece, Bulgaria, Croatia and Switzerland — bringing Elewatt to 25 European markets and completing our coverage of the day-ahead market.

Six new interface languages — Slovak, Hungarian, Slovenian, Greek, Bulgarian and Croatian — including our first non-Latin alphabets, plus full translation passes for Croatian, Slovenian, Czech and Hungarian.

Samsung SmartThings air conditioners join the supported integrations.

The battery calculator gained a commercial MWh mode, XLSX export, and a rebuilt charge/discharge planner that no longer proposes loss-making cycles.

France is live — added as the 13th supported country with TURPE 7 BT distribution tariff (Option Base and Heures Pleines / Heures Creuses), Enedis plus four major ELDs (ÉS Strasbourg, UEM Metz, GEG Grenoble, Gérédis), and the current 30.85 €/MWh accise + 20% TVA stack

French UI — new /fr/ locale in the language switcher; full translation pass coming in a follow-up release, English placeholders ship for now

Poland tariff verification refresh — all five Polish DSOs (PGE, Tauron, Energa-Operator, Enea Operator, Stoen) re-verified against the 2026 Taryfa price lists, removed stale 'Verification pending' notes

Netherlands is live — full Dutch UI translation and DSO/supplier coverage for our 10th supported market, with euro-cent units and Dutch tax (btw) conventions baked in

Spain is live — added as the 12th country with the mandatory 2.0 TD P1/P2/P3 time-of-use tariff (peak/flat/off-peak) handled automatically

Three new device integrations — Nibe heat pumps, eWeLink/Sonoff smart plugs via the Open API V2, and Tuya / Smart Life cloud devices (Beta)

Sponsors page — support Elewatt's development at /sponsors and get listed on the public supporter wall

Privacy / GDPR page — full data-controller, retention, and user-rights disclosures available in every supported locale

Daily price bot on X.com — every morning we tweet Europe's top spot-savings spotlight with a chart image. Follow @elewattEU at https://x.com/elewattEU

Localized timezone at signup — your timezone is auto-set from your country, with a searchable picker if you want to override it

Cron and reliability improvements — Shelly auto-learns its metering capability, the ENTSO-E fetch moved to a dedicated :05 cron, the Prisma pool is pre-warmed before parallel chains, and the 15-minute cron is now edge-triggered

Norway is live — full Norwegian UI translation, NOK currency support, ENTSO-E spot prices for NO1–NO5, and Norway added to the country/language switcher

All markets unified on ENTSO-E — every Baltic, Nordic and EU price area now flows through one source-of-truth, and prices are stored in their native currency (SEK, DKK, NOK, EUR) for accurate historical reporting

New education article: Daikin Onecta heat-pump setup — step-by-step guide for connecting your Daikin heat pump to Elewatt via the Onecta cloud, with a savings calculator that shows daily/monthly/yearly savings based on your annual consumption and load-shiftable share

Estonian Elektrilevi grid fees — Elektrilevi customers now see read-only grid fees pulled from the official tariff registry, no more manual entry when adding a contract

Calculator polish across the suite — every savings calculator (water heater, EV, heat pump, fixed-vs-stock) now uses the same registry-driven country data, so country and operator changes flow into all calculators automatically

Crawl access opened up — robots.txt now welcomes search and AI bots on public pages (education, calculators, release notes) while keeping the admin area sealed, with bot intent split into search vs. training categories

Denmark is live — full Danish localisation, Danish spot prices via Energi Data Service, and auto-redirect when you visit from Denmark

Your saved theme preference now applies instantly on login across every admin page, not just the Account page

Light theme support across the entire app — toggle between light and dark any time. All admin pages, calculators, charts, tables, and controls adapted for both themes

Preferences tab in Account Settings — all display settings (currency, price unit, VAT, theme) in one place with a shareable URL

Default Shelly device — mark one device as default and it opens automatically when you visit Shelly Devices

Live SEK/EUR exchange rate — refreshed daily from the ECB (via Frankfurter API), no app redeploy needed when rates change

Media Library lightbox — click any thumbnail to view the image full-size

EV vs Petrol calculator — country selection upgraded to a dropdown with flags, plus stronger contrast on the Elewatt comparison rows

Mode and Fan dropdowns in device controls now show icons (Flame, Snowflake, Wind, etc.) matching the device edit form

Unified form control heights (46px) and label styling across Input, Select, and DatePicker for a cleaner, more consistent UI

EV vs Petrol Cost Calculator — compare electric and ICE car costs with live fuel prices from EU Oil Bulletin, country selection, Elewatt smart charging savings, and cumulative cost chart

Electric vs Petrol Cars education article — comprehensive guide covering benefits, costs, maintenance breakdown, environmental impact, battery recycling, and future outlook. Available in 5 languages

Home Assistant integration (Beta) — control switches, climate devices (heat pumps, AC) with thermostat UI, HVAC mode buttons, fan/swing control, and price-based scheduling with Graph/Table/Schedule tabs

Daikin Onecta integration (Beta) — connect Daikin heat pumps for price-based temperature optimization with pre-heating during cheap hours

Shared device architecture — all integrations (Shelly, Home Assistant, Daikin) now use the same 3-section layout: Controls, Savings, and PriceStatistics with schedule visualization

Auto power detection — nominal power for devices is now automatically detected from metering data, no manual input needed

Live fuel prices — EV calculator fetches real-time petrol and diesel prices per country from the EU Oil Bulletin, with average electricity prices from our database

Energy meter linking — Home Assistant devices can be linked to energy sensor entities for consumption tracking

Solar production tracking — Elering invoice now shows production kWh and revenue alongside consumption, with an amber line on the chart

New education article: Fixed vs Stock Electricity — interactive calculator comparing contract types with Grid 1/2/4/5 options

Shelly Price API — separate integration card to push live prices to Shelly devices without cloud authentication

Shelly token auto-refresh — OAuth refresh tokens now stored and auto-renewed, no more daily re-authentication

Batch device processing — cron jobs now process 50 devices concurrently instead of sequentially, ready for 500k+ devices

Default contract and filters for new users — automatic setup based on country with Grid 2 and two starter filters

Notification bell — in-app notifications for new features and bug fixes with unread badge and mark-all-read

Ask Reedik email notifications — thread participants receive email when new comments are posted, with admin notify toggle

Auto email verification — confirmation email sent automatically after registration instead of requiring manual send

Demo mode — explore all Elewatt features without signing up. A full read-only tour with sample contracts, filters, Shelly devices, and consumption data

4 new Education Hub articles — Smart Grid vs Battery Storage, The Gigacorn Challenge, Cost of a kWh, and Smart Home Spot Price Apps

Education article navigation — previous/next article buttons at the bottom of each guide for easy browsing

Shelly savings log — scheduled ON-blocks are now tracked with estimated energy (Wh) and cost savings compared to the daily average price

Redirect for authenticated users — logged-in users visiting /login or /register are automatically sent to the dashboard

LLM/AI discoverability — added llms.txt so AI assistants can discover and cite Elewatt content

SEO & GEO improvements — enhanced structured data and geographic metadata across all pages

Shelly Plug S Gen3 page — dedicated product page with interactive image carousel, step-by-step installation guide, and water heater energy cost calculator

Browser push notifications — real-time electricity price alerts with per-filter settings, quiet hours, and configurable delay

In-app feedback system — report bugs or send suggestions directly from any page

Shelly energy metering — view live power consumption readings in the device panel

Shelly device manual toggle — override device ON/OFF state directly from the Shelly page

Hourly pricing interval — choose between 15-minute and hourly price resolution in contract settings

Email verification — new accounts now require email confirmation before activation

Features overview page — new landing page showcasing all Elewatt capabilities with links to each feature

Mobile navigation — responsive burger menu with slide-in panel for easy navigation on small screens

Day/Night grid tariff — contracts now support separate peak (07:00–22:00) and off-peak (22:00–07:00) grid fee rates for Finland, Latvia, Lithuania, and Estonian manual grid

Improved contract editor — fields reorganized into logical Grid/Network and Electricity Price sections for easier setup

Elering integration - connect your metering data to view consumption and calculate invoices

Consumption & Expected Invoice chart with modern gradient design and smart tooltips

Price unit preference - switch between c/kWh and €/kWh across all pages

Skip unnecessary API calls for fixed contracts - faster page loads on Filters and Shelly pages

Schedule view with Total ON Time summary above the schedule table

Modernized chart designs with gradient bars, dark tooltips, and cleaner axes

Elering API key link - direct link to create API keys from the connection panel

Cron job authentication with Bearer token for secure scheduled tasks

Monthly fee support for contracts (excise tax, renewable energy fee, security supply fee, balancing capacity fee)

Redesigned account page, contracts page, and navigation header

Optimized mobile tooltip display - tooltip now appears below chart instead of overlaying it

Improved performance on mobile - chart tooltip updates no longer cause full page re-renders for smoother dragging

Grid/distribution fee support for Finland, Latvia, and Lithuania

Email notifications for Shelly device syncs with detailed schedule information

Schedule limit warnings (20 schedules max) for all Shelly devices with toast notifications

Enhanced Duration field with real-time hours conversion display

Improved BarChart visualization with gradient effects and violet tones for OFF bars

Added schedule limit warnings in email notifications when maximum is reached

Enhanced visual consistency between ON and OFF states in charts

Complete translation system - all pages now fully translated

Release notes page added to document all features and updates

Improved contrast across the entire application for better visibility

Enhanced filter validation for time range duration limits

Added per-time-range minutes configuration for duration filters

Improved Shelly sync button with rotation animation during sync

Added maximum schedule limit warning (20 schedules) for Shelly devices

Fixed hydration errors in Dashboard component with fixed UTC date

Enhanced PriceStatistics component with bar charts for duration filters

Improved current price display to always show regardless of filter status

Added proper ON/OFF state visualization in charts and tables

Fixed null priceThreshold errors with proper optional chaining

Improved timestamp normalization for accurate schedule matching

Enhanced error handling and user feedback throughout the application

Added future-only schedule filtering to prevent past schedule creation

Improved filter type selection with tab-based UI instead of dropdown

Enhanced form field ordering for better user experience

Added comprehensive TypeScript type safety across all components

Duration-based filtering with time range support

Time range selection with per-range minute configuration

Slide-in modals for filter and device editing

Toast notification system for user feedback

Sitemap generation for SEO optimization

Gen1 Shelly device support with legacy HTTP API

Improved schedule calculation algorithm

Enhanced filter validation and error messages

Initial release - Real-time electricity price dashboard

Multi-language support (English, Estonian, Latvian, Lithuanian, Finnish)

URL-based language routing for SEO

Price filters with threshold-based filtering

Contract management system

Shelly device integration with Gen2+ support

Shelly Cloud OAuth integration

Email confirmation system

Cookie consent popup

Terms and Conditions page