{"product_id":"sol-s6-eh1p3k-l-plus-5y","title":"Solis S6 3kW Hybrid Inverter | S6-EH1P3K-L-PLUS","description":"\u003c!-- clearray-added-v1 --\u003e\n\u003cdiv class=\"crx\"\u003e\n\n\u003cp class=\"crx-lede\"\u003eThe Solis S6 3kW Plus, model S6-EH1P3K-L-PLUS, is the entry point to Solis's single-phase S6 Plus hybrids for 48 V batteries. It suits a smaller roof and a home where one battery covers the evening: the panels supply the house first, spare solar charges the battery, and in a power cut the backup circuit is running from the battery in under 10 ms.\u003c\/p\u003e\n\u003cp class=\"crx-lede\"\u003eWith 13.1 A of rated output at 230 V it sits well inside G98's 16 A per phase, so the network operator only needs notifying after commissioning. Solis recommends no more than 6 kWp of panels on it and lets it use up to 4.8 kW of their output at a time; the battery side runs at up to 3 kW and 70 A.\u003c\/p\u003e\n\n\u003ch3 class=\"crx-h\"\u003eS6 3kW Plus at a glance\u003c\/h3\u003e\n\u003cdiv class=\"crx-facts\"\u003e\n  \u003cdiv class=\"crx-fact\"\u003e\n\u003cb\u003e3 kW\u003c\/b\u003e\u003cspan\u003eRated output, grid and backup\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"crx-fact\"\u003e\n\u003cb\u003e48 V\u003c\/b\u003e\u003cspan\u003eBattery, 40–60 V\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"crx-fact\"\u003e\n\u003cb\u003e70 A\u003c\/b\u003e\u003cspan\u003eBattery charge and discharge\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"crx-fact\"\u003e\n\u003cb\u003e2 MPPT\u003c\/b\u003e\u003cspan\u003eOne string each, 16 A\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"crx-fact\"\u003e\n\u003cb\u003e6 kWp\u003c\/b\u003e\u003cspan\u003eRecommended max array\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"crx-fact\"\u003e\n\u003cb\u003e4.8 kW\u003c\/b\u003e\u003cspan\u003eMax PV it uses at once\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"crx-fact\"\u003e\n\u003cb\u003eIP66\u003c\/b\u003e\u003cspan\u003eIndoor or outdoor\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"crx-fact\"\u003e\n\u003cb\u003eG98\u003c\/b\u003e\u003cspan\u003e13.1 A at 230 V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 class=\"crx-h\"\u003eWhat's in the box\u003c\/h3\u003e\n\u003cp\u003eSolis lists the contents in section 1.4 of its S6-EH1P(3-8)K-L-PLUS installation manual (v1.2, October 2025); the 3 kW ships with the same kit as the other 3 to 6 kW models.\u003c\/p\u003e\n\u003cul class=\"crx-inc\"\u003e\n  \u003cli\u003eThe 3 kW inverter with its wall back plate and two fastening screws\u003c\/li\u003e\n  \u003cli\u003eFour expansion bolts to fix the back plate\u003c\/li\u003e\n  \u003cli\u003eTwo pairs of MC4 connectors, for one string on each tracker\u003c\/li\u003e\n  \u003cli\u003eAn ESCT-TA16-100A\/50mA CT clamp with a 5 m lead, which Solis says is compulsory for a hybrid installation\u003c\/li\u003e\n  \u003cli\u003eA Wi-Fi\/LAN data stick for SolisCloud monitoring\u003c\/li\u003e\n  \u003cli\u003eA parallel communication cable and four RJ45 connectors\u003c\/li\u003e\n  \u003cli\u003eThe quick installation manual\u003c\/li\u003e\n  \u003cli class=\"crx-no\"\u003eBattery cables: Solis recommends 2 AWG (roughly 35 mm²) with R38-8 ring terminals, plus a 300 A DC breaker\u003c\/li\u003e\n  \u003cli class=\"crx-no\"\u003eThe SDM120CTM meter, an optional alternative to the CT, sold separately\u003c\/li\u003e\n  \u003cli class=\"crx-no\"\u003ePV cable, grid and backup AC cable, isolators and consumer unit protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInverters from Solis's 2024 production came with a Wi-Fi\/GPRS stick in place of the Wi-Fi\/LAN one; the rest of the kit is unchanged.\u003c\/p\u003e\n\n\u003ch3 class=\"crx-h\"\u003ePanels and strings\u003c\/h3\u003e\n\u003cp\u003eEach of the two MPP trackers takes a single string at up to 16 A working current and 20 A short-circuit. The trackers operate between 90 V and 435 V, the inverter starts up at 90 V, and 500 V is the absolute input limit, so work out each string's open-circuit voltage on the coldest morning and keep it below 500 V.\u003c\/p\u003e\n\u003cp\u003eTwo PV figures matter on the 3 kW. \u003cb\u003e6 kWp\u003c\/b\u003e is the largest array Solis recommends, double the inverter's rating. \u003cb\u003e4.8 kW\u003c\/b\u003e, 160% of the rating, is the most solar power it will process at once, with anything beyond that clipped. To reach that 4.8 kW within the 16 A limit, each string needs to work at 150 V or more, the bottom of the full-load MPPT range. UK arrays seldom produce their full nameplate output, so with 6 kWp fitted the cap mostly matters around midday in the sunniest weeks.\u003c\/p\u003e\n\n\u003ch3 class=\"crx-h\"\u003eThe battery side\u003c\/h3\u003e\n\u003cp\u003eAny 40–60 V battery will do, lithium or lead-acid, with the BMS talking to the inverter over CAN or RS485. The 3 kW's 70 A sits comfortably within the IntelliHome 5 kWh's 100 A discharge rating, so a single 5 kWh unit can supply its full 3 kW. If the inverter was made before April 2026, Solis requires a firmware update before it is commissioned with an IntelliHome.\u003c\/p\u003e\n\u003cp\u003eStarting without a battery is fine: select \"No battery\" during setup and it works as a normal grid-tied solar inverter until one is connected.\u003c\/p\u003e\n\n\u003ch3 class=\"crx-h\"\u003eBackup, generator and off-grid\u003c\/h3\u003e\n\u003cp\u003eThe backup output delivers 3 kW continuously and twice that for 10 seconds, enough to get pumps and fridge compressors started. With the grid present, up to 35 A passes straight through to the backup circuit, so those loads can draw more than 3 kW while the grid is on; in a power cut they have to fit within the inverter's 3 kW.\u003c\/p\u003e\n\u003cp\u003eA generator connects to the GEN port, with automatic start and stop control, and the inverter will also run off-grid on solar alone. Existing solar on its own grid-tied inverter can be wired in for export control and to keep working off-grid. Up to six units can be paralleled, and three or more can be set up as a three-phase supply.\u003c\/p\u003e\n\n\u003ch3 class=\"crx-h\"\u003eGrid approval\u003c\/h3\u003e\n\u003cdiv class=\"crx-note\"\u003e\n  \u003cdiv\u003e\n    \u003cb\u003eG98: notify within 28 days, no application first\u003c\/b\u003e\n    \u003cp\u003eAt 13.1 A, the 3 kW is well under G98's 16 A per phase, so the installer simply notifies the network operator within 28 days of commissioning. If solar already on the property pushes the total over 16 A, the installation falls under G99 and needs approval before it goes in.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch3 class=\"crx-h\"\u003eBuilt in\u003c\/h3\u003e\n\u003cul class=\"crx-inc\"\u003e\n  \u003cli\u003eA PV switch, with ground-fault and residual-current monitoring, anti-islanding and DC reverse-polarity protection\u003c\/li\u003e\n  \u003cli\u003eA 7-inch display and Bluetooth for setup from the Solis app; Wi-Fi\/LAN through the supplied stick, with 2G\/3G\/4G as an option\u003c\/li\u003e\n  \u003cli\u003eFanless natural-convection cooling, so there is no fan to wear out or whine\u003c\/li\u003e\n  \u003cli class=\"crx-no\"\u003eArc-fault detection (AFCI) is optional on this range, not fitted as standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 class=\"crx-h\"\u003eOn the wall\u003c\/h3\u003e\n\u003cp\u003eThe 3 kW weighs 23 kg in a 335 × 560 × 253 mm (W × H × D) case and is rated IP66 for indoor or outdoor fitting from −25 °C to +60 °C. Solis wants it out of direct sunlight, which causes derating, and not in a living area where people or animals spend long periods, so a garage, outbuilding or shaded outside wall is the usual home for it.\u003c\/p\u003e\n\u003cp\u003eIt hangs upright, within 5° of vertical. Clearances are 300 mm above, 150 mm each side and 500 mm in front, with the bottom at least 800 mm off the floor, or 500 mm if there is no battery cabinet or other heat source below. Solis prohibits mounting two units one directly above the other.\u003c\/p\u003e\n\n\u003ch3 class=\"crx-h\"\u003eOrder alongside\u003c\/h3\u003e\n\u003cul class=\"crx-need\"\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/sol-sbat-r5k-l-wm-od\"\u003eSolis IntelliHome 5 kWh battery\u003c\/a\u003e\n    \u003cp\u003eIts 100 A rating covers the 3 kW's 70 A.\u003c\/p\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/sol-sbat-r10k-l-wm-od\"\u003eIntelliHome 10 kWh battery\u003c\/a\u003e\n    \u003cp\u003e10 kWh from a single wall unit.\u003c\/p\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/sol-sbat-r16k-l-wm-od\"\u003eIntelliHome 16 kWh battery\u003c\/a\u003e\n    \u003cp\u003eThe biggest IntelliHome, for long evenings.\u003c\/p\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/sol-sbat-r5k-acc-pack\"\u003eIntelliHome 5 kWh accessory pack\u003c\/a\u003e\n    \u003cp\u003eBattery cables and comms leads, if not bought with the battery.\u003c\/p\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/sol-war-10y-eh1pk-plus\"\u003eWarranty to 10 years\u003c\/a\u003e\n    \u003cp\u003eDoubles the standard five-year cover.\u003c\/p\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/sol-war-20y-eh1pk-plus\"\u003eWarranty to 20 years\u003c\/a\u003e\n    \u003cp\u003eTwenty years of cover in total.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 class=\"crx-h\"\u003eAlternative sizes\u003c\/h3\u003e\n\u003cp\u003eThe other single-phase S6 Plus models share this one's case, 40–60 V battery range and app. Only the 3.6 kW also stays on G98; from 5 kW up, a G99 application must be approved before fitting.\u003c\/p\u003e\n\u003cul class=\"crx-need\"\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/sol-s6-eh1p3-6k-l-plus-5y\"\u003eS6 3.6 kW Plus hybrid inverter\u003c\/a\u003e\n    \u003cp\u003eUp to 7.2 kWp of panels, 80 A to the battery, G98.\u003c\/p\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/sol-s6-eh1p5k-l-plus-5y\"\u003eS6 5 kW Plus hybrid inverter\u003c\/a\u003e\n    \u003cp\u003eUp to 10 kWp of panels, 112 A to the battery, G99.\u003c\/p\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/sol-s6-eh1p6k-l-plus-5y\"\u003eS6 6 kW Plus hybrid inverter\u003c\/a\u003e\n    \u003cp\u003eUp to 12 kWp of panels, 135 A to the battery, G99.\u003c\/p\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/sol-s6-eh1p8k-l-plus\"\u003eS6 8 kW Plus hybrid inverter\u003c\/a\u003e\n    \u003cp\u003eUp to 16 kWp on four strings, 190 A to the battery, G99.\u003c\/p\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/sol-s6-eh1p10k-l-plus-uk\"\u003eS6 10 kW Plus hybrid inverter\u003c\/a\u003e\n    \u003cp\u003eUp to 20 kWp, 21 A per string, 210 A to the battery, G99.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 class=\"crx-h\"\u003eQuestions on the 3 kW\u003c\/h3\u003e\n\u003cdiv class=\"crx-qa\"\u003e\n  \u003cdiv\u003e\n\u003cb\u003eIs 3 kW big enough?\u003c\/b\u003e\n    \u003cp\u003eIt depends more on the roof than the house. It takes up to 6 kWp of panels and runs the home from the battery at up to 3 kW, with the grid covering anything above that. In a power cut the backup circuit is limited to 3 kW, or 6 kW for 10 seconds.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003cdiv\u003e\n\u003cb\u003eDoes it come with Wi-Fi?\u003c\/b\u003e\n    \u003cp\u003eYes. The Wi-Fi\/LAN stick for SolisCloud is in the box, and Bluetooth is built in for commissioning from a phone.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003cdiv\u003e\n\u003cb\u003eIs a meter needed?\u003c\/b\u003e\n    \u003cp\u003eNo. The CT clamp supplied is Solis's standard measuring device and is compulsory for hybrid operation; the SDM120CTM meter is an optional extra.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003cdiv\u003e\n\u003cb\u003eWhich battery cable does it take?\u003c\/b\u003e\n    \u003cp\u003e2 AWG, about 35 mm², on R38-8 ring terminals, the same as the other 3 to 6 kW models. It isn't supplied with the inverter.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003cdiv\u003e\n\u003cb\u003eCan I extend the warranty?\u003c\/b\u003e\n    \u003cp\u003eYes, to 10 or 20 years in total. Add the inverter's serial number to the order notes, and Solis issues the certificate within about 6 to 8 weeks.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003cdiv\u003e\n\u003cb\u003eWho can install it?\u003c\/b\u003e\n    \u003cp\u003eAn electrician working to BS 7671, as it connects to the grid supply, the battery and the consumer unit. Solis's manual says to switch the battery off and confirm 0 V before touching its cables.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Solis","offers":[{"title":"Default Title","offer_id":57440943636812,"sku":"SOL-S6-EH1P3K-L-PLUS-5Y","price":569.02,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1048\/7742\/4972\/files\/SOL-S6-EH1P3K-L-PLUS-5Y.jpg?v=1778196393","url":"https:\/\/clearraysolar.co.uk\/products\/sol-s6-eh1p3k-l-plus-5y","provider":"ClearRay Solar","version":"1.0","type":"link"}