Verifiable comparison between the Octopus Solar Smart package with a 5 kWh GoodWe ESA and a 7 kWh Atmoce MS-7K-U solution using capacity, architecture, safety, warranty, backup and scope data.
It can be when priorities include 7 kWh, AC coupling, retrofit, battery voltage below 30 VDC, galvanic isolation, IP66, a 15-year warranty, 10,000 cycles and future expansion. The Octopus package may suit buyers wanting a bundled B2C offer with panels, installation, tariff and maintenance.
Octopus publishes a 5 kWh GoodWe ESA battery, eight panels, backup, labour, Solar Premium tariff and OctoCare for Solar Smart, from €83/month or €8,704 cash as an indicative price. Atmoce MS-7K-U is a 7 kWh device for a professional proposal and the two prices must not be treated as the same scope.
| Criterion | Octopus Solar Smart · GoodWe ESA | Atmoce MS-7K-U |
|---|---|---|
| Offer type | B2C package with panels, battery, installation, tariff and OctoCare. | Equipment and architecture for an equivalent professional proposal. |
| Published capacity | 5 kWh GoodWe ESA in the Solar Smart package. | MS-7K-U: 7 kWh nominal, 40% more nominal capacity. |
| Architecture | GoodWe all-in-one system with integrated backup; exact reference must be confirmed. | AC-coupled, compatible with third-party PV and EMS; off-grid, single-phase or three-phase. |
| Documented safety | GoodWe publishes LFP chemistry and ESA safety measures; quotation model and datasheet must be confirmed. | LFP, battery <30 VDC, cell-level management, galvanic isolation, insulation monitor, IP66 and IEC 62619/63056. |
| Warranty and cycles | Octopus states a 10-year battery warranty; cycles are not specified on the package page. | 15 years and 10,000 cycles according to the MS-7K-U datasheet. |
| Battery power | Not stated on the public package page; check quotation and exact model. | 4.5 kVA continuous and 5 kVA peak. |
| Expansion | Confirm limits of the included GoodWe version and package terms. | Up to 126 kWh with one M-Gateway according to the datasheet. |
To avoid comparing the battery alone, a single-phase residential configuration on a pitched tiled roof was reviewed on 18 August 2026. The simulation includes:
The reviewed Atmoce configuration remained below the €8,704 cash price published by Octopus even after adding mounting structure, cabling, protection, installation and permits.
The professional tariff and exact private price are not published. This is not a binding offer: transport, roof conditions, backup loads and exceptional work must be checked for each home. Electricity tariff, OctoCare and finance are compared separately.
It can be when priorities include 7 kWh, AC coupling, retrofit, battery voltage below 30 VDC, galvanic isolation, IP66, a 15-year warranty, 10,000 cycles and future expansion. The Octopus package may suit buyers wanting a bundled B2C offer with panels, installation, tariff and maintenance.
It can be. In an internal simulation reviewed on 18 August 2026, an Atmoce configuration with eight 515 Wp modules, 7 kWh, backup, microinverters, tile-roof mounting, cabling, AC protection board, installation, commissioning and permits remained below the €8,704 cash price published by Octopus. The exact private price is not published and must be confirmed for each home.
A nominal 7 kWh capacity is 40% higher than 5 kWh. Real autonomy also depends on usable capacity, backup reserve, power, temperature, strategy and loads.
Atmoce documents relevant safety features: LFP chemistry, battery voltage below 30 VDC, cell-level management, galvanic isolation, IP66, insulation monitoring and IEC 62619 and IEC 63056 compliance. Absolute superiority requires comparing the exact GoodWe reference and complete installation using the same criteria.
The MS-7K-U states 4.5 kVA continuous, 5 kVA peak, 90% AC round-trip efficiency and 96% DC round-trip efficiency. The 90% figure must not be compared with maximum PV inverter efficiency because they are different metrics. Real performance depends on cycle, power, temperature and architecture.
It must not be assumed. Phases, existing PV, metering, protection, backup board, critical loads, power, communications, space, permits and installer scope must be reviewed.
No. Plug & Play Energy works with installers, engineering firms and professionals. A consumer may request a comparison, but an installer must prepare and deliver the equivalent proposal.
Full quotation, location, consumption and load profile, power and phases, kWp and panels, battery and capacity, backup and critical loads, warranties, finance, maintenance, permits and included taxes.
Send the full quotation to a professional installer and request an equivalent Atmoce alternative. Plug & Play Energy supplies professionals and can support system sizing.
Request a professional comparisonEditorial and technical comparison by Plug & Play Energy. Offers and datasheets may change; date, exact reference and scope must be checked.