20kW Off-Grid Solar Power System 580-740W Bifacial PV Panel LiFePO4 Battery 230V

The TIANON ESS04 is a complete 20kW off-grid solar power system purpose-built for residential homes seeking full energy independence from the utility grid. This comprehensive kit integrates 580-740W bifacial half-cut monocrystalline PV modules, MPPT charge controller, LiFePO4 battery storage, DC cabling (PV1-F 4mm²), and BIPV mounting hardware into a single-source solution. Each bifacial PV module measures 2279×1134×30mm and weighs 31kg, delivering 43.03V / 13.96A at maximum power point for superior energy yield in both direct and reflected light conditions. With 230V/380V output at 50Hz/60Hz and 24-hour continuous operation, the ESS04 powers entire households reliably through day and night. CE, IEC, MSDS, and UN38.3 certifications ensure full international compliance for global distribution and safe transport.

• Complete 20kW off-grid power solution - fully integrated system with PV modules, MPPT controller, LiFePO4 battery bank, DC cables, and mounting hardware all sourced from TIANON for guaranteed compatibility and simplified procurement.
• 580-740W bifacial monocrystalline panels - half-cut cell technology with bifacial light capture delivers industry-leading efficiency, with 43.03V/13.96A MPP output and a durable 30mm aluminum frame rated for extreme weather conditions.
• LiFePO4 battery energy storage - Lithium Iron Phosphate chemistry ensures exceptional cycle life, thermal stability, and safe deep discharge performance. Each battery shipment includes MSDS documentation and UN38.3 certification in dangerous-goods-compliant packaging.
• MPPT intelligent charge management - maximum power point tracking controller dynamically optimizes solar harvest across varying irradiance and temperature conditions, maximizing daily energy yield from the PV array.
• Residential-grade 230V/380V output - dual-voltage three-phase output at 50Hz or 60Hz supports standard household electrical infrastructure worldwide, from lighting circuits to heavy appliances like water pumps and air conditioning.
• Flexible BIPV mounting system - building-integrated photovoltaic mounting for clean architectural lines, with roof mount and ground mount configurations also available to accommodate any site layout or structural requirement.
• 24-hour continuous operation - designed for round-the-clock power delivery, the system charges during daylight hours and supplies stored energy through the night for uninterrupted off-grid living.
• Long-term warranty assurance - 10-year cell warranty plus 25-year power performance warranty on all PV modules, with direct factory support from TIANON manufacturing bases in Xi’an and Anhui.

• CE - European conformity marking for electrical safety and EMC compliance
• IEC - International Electrotechnical Commission standards for solar PV equipment
• UN38.3 - all T1-T8 transport safety tests passed for air and sea freight
• MSDS - material safety data sheet for lithium battery components
• Dangerous Goods Packing Certificate - compliant export packaging for battery shipping

• Standalone residential homes and rural properties with no existing grid connection
• Vacation homes and remote cabins requiring dependable year-round off-grid electricity
• Island properties where grid extension costs make off-grid solar the economical choice
• Emergency-resilient homes in regions with unreliable utility power or frequent natural disasters
• Sustainable housing developments seeking zero-carbon energy certification and grid independence

1. Is everything included for a complete off-grid installation? - The ESS04 kit includes PV modules, MPPT controller, LiFePO4 battery, DC cables, and BIPV mounting. An inverter for AC loads may be required depending on your specific appliance configuration.
2. How much energy can the system generate daily? - With 580-740W bifacial modules, a fully deployed 20kW array typically generates 80-120kWh per day under optimal solar conditions, sufficient for a large family home.
3. Can I add more panels or batteries later? - Yes, the modular architecture supports system expansion. Contact our engineering team with your future capacity requirements for a tailored expansion plan.
4. What ongoing maintenance does the system need? - Routine panel cleaning and annual electrical connection inspection are recommended. The LiFePO4 battery requires no maintenance. All components are engineered for 15-20 year design life.
5. How are the batteries shipped internationally? - All battery shipments are UN38.3 certified with MSDS documentation, packaged in dangerous-goods-compliant wooden crates for safe sea and air transport worldwide.

Shaanxi Tianon New Energy Technology Co., Ltd. is a professional renewable energy company specializing in residential, commercial, and industrial solar power systems and LiFePO4 energy storage solutions. Operating the Celvor Energy brand with dual manufacturing bases in Xi’an and Anhui and over 10 years of export experience, we deliver certified, high-quality solar products to distributors and project developers across 50+ countries worldwide. Our global presence includes warehousing and support in Rotterdam and Johannesburg for fast regional fulfillment and technical service.