Sharp is rolling out a series of refreshes across its “Eee Connect” home energy solution portfolio. The company will launch the new “JH-WB2621” model of its cloud-connected storage battery system “Eee Storage” on September 8, followed by the “Full Fit” series of roof-fit solar modules under its “Eee Solar” residential photovoltaic system on October 9. The storage battery achieves both higher capacity and a smaller, lighter form factor, with AI-powered controls raising the self-consumption rate of solar generation to approximately 74%. The solar panels are engineered with shape innovations that allow greater installed capacity even on constrained roof spaces.
The JH-WB2621 storage battery offers 11.5 kWh of capacity at a price of ¥3,751,000. A separate power conditioner and other components are required. While capacity has expanded by roughly 21% compared with the previous model, a redesign of the main unit has reduced volume per kWh of capacity by approximately 55% and installation footprint by approximately 35%. The system is designed for installation in limited spaces, including compact urban homes.
Weight per kWh of capacity has also been reduced by roughly 35%, which Sharp says achieves an industry-leading level of lightness. The company also aims to improve ease of installation. The operating temperature range has been expanded to minus 15°C to 45°C, accommodating cold climates and high-temperature environments. Discharge power during outages has been raised from the previous model’s 3.0 kVA to 4.2 kVA, allowing more appliances to run simultaneously during emergencies. The main unit measures 458 mm wide × 360 mm deep × 777 mm high and weighs 95 kg, and can be installed either indoors or outdoors.
The storage battery is equipped with the AI control function “COCORO ENERGY.” The system learns household lifestyle patterns and solar generation conditions to control equipment, raising the self-consumption rate of solar power to approximately 74%. Sharp says this contributes to reducing household electricity bills.
Meanwhile, the Full Fit solar module series comprises five models with nominal maximum output ranging from 132 W to 230 W, priced from ¥91,300 to ¥152,900. The short-side length of the modules has been reduced by approximately 7% compared with previous models, improving installability on gable and single-slope roofs. On a south-facing gable roof with a frontage of 3.4 ken, depth of 4.2 ken, and a 5-sun roof pitch, one additional row can be installed on the ridge side compared with previous models, boosting installed capacity by approximately 27%.
For hip roofs, the corner module’s hypotenuse angle has been changed from the previous 52 degrees to 50 degrees. By moving closer to the typical hip roof hypotenuse angle of 48 degrees, the fit on sloped roof sections is improved. On a hip roof with a frontage of 5 ken, depth of 4.5 ken, and a 4.5-sun pitch, one more row can be installed than with previous models, increasing installed capacity by approximately 32%.
The minimum number of modules required to start the power conditioner has also been reduced from three to two, enabling more effective use of narrow roof spaces. An anti-glare version is also available, with textured glass that diffuses light to reduce directional reflection. With gloss levels below those of standard roofing materials, it can be installed on north-facing roof sections where consideration for reflected light is required.
The Full Fit series lineup is as follows:
Note: All prices are tax-inclusive suggested retail prices.
The trend of self-consuming generated electricity by combining residential solar power with storage batteries is spreading. In addition to reducing electricity purchases from utilities, demand for storage batteries is rising as a backup measure during power outages. With this product refresh, Sharp aims to make adoption easier for homes with roof shape or installation space constraints, expanding options for energy self-sufficiency.
The increased storage battery capacity and enhanced AI controls respond to the shift toward prioritizing self-consumption over selling power back to the grid, as more households reach the end of their feed-in tariff (FIT) periods. The smaller solar panel footprint and improved installed capacity address demand for maximizing generation from limited roof area. By marketing both products under the same “Eee Connect” brand, Sharp is expected to emphasize system-level integration as well.
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