Sigenergy app · iOS / Android

Single app controls everything — solar, battery, EV charging, EMS modes, V2X. Live view of energy flows (sankey diagram showing solar → battery → house → EV → grid), monthly energy usage and revenue, tariff arbitrage tracking. Available in 30+ languages. Replaces the typical 3–4 apps that a fragmented multi-vendor system would require.

AI EMS · Octopus Agile native

Built-in support for Octopus Agile, Cosy Octopus, Tesla Energy Plan, OVO Anytime, and most UK time-of-use tariffs. Reads the half-hourly pricing API directly; no manual intervention. AI decides each half-hour: import cheap grid to fill the battery, hold battery for peak self-supply, export expensive grid revenue. Reported saving 30–40% vs flat-tariff homes with the same hardware.

Eagle-eye touch interface

Front-facing touch display shows system status at a glance — current solar generation, battery state of charge, today's revenue, current grid import/export. Side ambient lighting changes colour based on energy flow direction: green for solar surplus, amber for grid import, blue for V2G export. Architectural design language; the unit becomes a feature, not an afterthought.

Five operating modes

Self-consumption (default — use solar first, then battery, grid as last resort), Time-of-use arbitrage (AI EMS optimises against Octopus Agile), Backup (reserve battery for outages, charge from cheap grid), Manual schedule (homeowner sets fixed charge/discharge times), and Off-grid mode (full grid disconnect, for off-grid-curious properties or grid outages).

V2G scheduling

For V2G-capable EVs, schedule when the car can be tapped — typically when grid prices peak and the car has more than 70% charge. EV becomes an additional 60–80 kWh battery on top of the SigenStor's house battery. Useful during winter cold snaps when grid prices regularly hit £1–£2 per kWh for 30–60 minute peaks. Set "minimum guaranteed charge" so the car always has enough for tomorrow's commute.

Real-time energy flow visualisation

Sankey diagram in the app shows live energy flows — width of each arrow proportional to current power. Useful for diagnostic and learning purposes. Reveals patterns like "the heat pump compressor coincides exactly with peak solar generation" or "EV draw at 6 PM defeats battery savings". Awareness drives optimisation.

Smart home integrations

Native integration with Apple HomeKit (status display), Home Assistant (full control), openHAB, IFTTT, and a REST API for custom integrations. Tech-forward households running multi-device load optimisation (heat pump, EV, battery, hot water cylinder all on the same tariff-aware engine) can route SigenStor data through their broader home automation stack.

OTA firmware · improving over time

Firmware updates push over Wi-Fi or 4G LTE. New tariff integrations, refined AI EMS logic, new EV vehicle compatibility for V2X, new safety features all arrive automatically. The unit installed today gets meaningfully better through its 10+ year operating life. Sigenergy has shipped major firmware improvements quarterly since 2023.

Owner dashboard · CSV export

Monthly energy usage CSV export — solar generated, battery cycles, kWh self-consumed, kWh imported, kWh exported, revenue earned, tariff arbitrage savings. Useful for ESG reporting (small businesses), homeowner accounting, and the satisfying ritual of watching the savings stack up. The detailed breakdown justifies the premium against simpler battery products that just show "today's solar".

1 · Solar inverter

Integrated string inverter handling up to ~30 kW of solar PV input across multiple MPPT (Maximum Power Point Tracking) channels. Replaces what would otherwise be a wall-mounted Solis, Fronius, or SolarEdge inverter. Same MPPT efficiency as standalone string inverters at >98%, plus the architectural saving of one less box on the wall.

2 · Battery PCS (Power Conversion System)

DC-DC and DC-AC power conversion between battery, solar, EV charger, and the grid. Handles all the routing logic — when to take from solar, when to discharge to house, when to export. PCS sits between the battery modules and everything else; it's what makes the battery actually useful rather than just a tank of DC.

3 · Battery packs (modular)

LiFePO4 battery packs with 314 Ah large-format prismatic cells. Two module sizes: BAT-6.0 (6.02 kWh) and BAT-9.0 (9.04 kWh) — both physically identical in dimensions and stack 1–6 per cabinet. Mix-and-match supported (e.g. start with 3× BAT-9.0 = 27 kWh, add a BAT-6.0 next year = 33 kWh). 6 major safety strategies per pack including fire extinguisher, pressure relief, temperature control, aerogel insulation.

4 · EMS (Energy Management System)

The AI brain. Reads solar, battery state, EV state, house demand, grid tariff, weather forecast in real time. Decides every 60 seconds where energy should flow. Learns the household's usage patterns over 30–60 days and refines decisions. The EMS is what justifies the SigenStor's premium against simpler self-consumption battery products — most batteries decide via fixed rules, the SigenStor decides via real-time optimisation.

5 · EV DC charger · optional

Optional 25 kW DC EV charging module. DC-coupled — charges the EV directly from the system's DC bus without DC→AC→DC conversion losses. Bidirectional capable: V2H (vehicle-to-home) during outages, V2G (vehicle-to-grid) during expensive grid peaks. Compatible with V2G-ready EVs (Nissan Leaf, BYD Atto 3, Polestar 3, MG, others). Adds approximately £2,500–£4,000 to the system cost; specified separately at order based on whether the household has or plans to have a V2G-capable EV.

6 · EV cable: Tethered vs Untethered

If the EV DC charger module is specified, the cable is a separate configuration choice. Untethered (Socket) — driver brings own CCS DC cable. Less common in the home market because DC cables are bulky and not all V2G EV owners carry one. Tethered (with Cable) — fixed 5 m or 7.5 m CCS DC cable factory-fitted to the SigenStor. The standard choice for residential V2X installs because of cable bulk and the integrated aesthetic of the cabinet design. +£250 for tethered configuration. Same V2G capability either way.

10 year manufacturer warranty

Sigenergy warrants the SigenStor for 10 years from commissioning, covering the inverter, battery PCS, EMS, and battery cells (≥80% remaining capacity guaranteed at year 10). Compares favourably with the 10–12 year industry standard. EV DC charger module covered by separate 5-year warranty. Extended warranties to 15 years available through CleverBloom's service plan.

Five-level battery safety

Internal automatic fire extinguisher (Halon-replacement aerosol), pressure relief valves on each cell, ceramic temperature sensors, aerogel insulation between cells, high-temperature-resistant cushions. Six major safety strategies operate per battery pack. IEC/EN 62619 certified for stationary storage. Particularly relevant for ground-floor or garage installs where fire egress concerns weigh on system selection.

UK installer network · still growing

SigenStor is a newer system in the UK market — Sigenergy was founded May 2022 and the UK installer network is still maturing. CleverBloom is among the early specialist installers; the upside is direct distributor relationship and faster spare-parts access, the downside is fewer "second opinion" installers nationwide compared with mature brands. Worth knowing before specifying.

AI EMS firmware updates

The AI energy management system's logic improves through firmware. Major releases roll quarterly; tariff integrations and new V2G EV compatibility ship between releases. The unit gets meaningfully better through its 10-year warranty life. CleverBloom monitors the rollout and flags significant updates to homeowners — particularly when a new feature might warrant a settings tune-up.

AI EMS learning-phase oversight

The AI EMS needs 30–60 days to learn a household's patterns before time-of-use arbitrage runs at full effectiveness. During this window, sub-optimal decisions can cost real money — particularly on Octopus Agile where wrong-time imports get expensive. CleverBloom's specialist service plan includes a 30-day check-in at the end of the learning phase to verify the system has settled into the right operating pattern.

Tariff drift quarterly review

Octopus Agile and similar dynamic tariffs change pricing curves over time — the savings model that worked in year one might not be optimal by year three. Quarterly review against the actual energy bill (included in CleverBloom's specialist service plan) catches drift. Particularly important for households where the AI EMS arbitrage savings are a material part of the original system business case.