Self-sufficient summers for homeowner with solar panels

Tiit Nurmela’s house, in Norrtälje Stockholm, is equipped with solar panels with a peak effect of 10.8 kWp*. During 2019 a  total of 8,000 kWh or energy were generated, of which only 3,000 kWh were used. A geothermal heat pump was installed in December 2019, which further increases the amount of excess energy being produced and subsequently delivered to the grid. QuiPower was installed at the house in January 2020. Clean energy is now stored and used to power the home and two hybrid vehicles. The hope is for self-sufficient summers.

The solution in brief

Annual solar production:8,000 kWh
Solar consumption pre QuiPower:38%
Solar consumption with QuiPower:100%
Car(s) being charged:Two hybrid vehicles
QuiPower products in use:QuiPower Storage
QuiPower Storage capacity:12 kWh

The challenge

Tiit Nurmela saw an opportunity to save the excess solar energy that was being generated during the day and use it during the evening when the sun goes down. “I’m genuinely interested in technology and have long understood the benefits of energy storage,” says Tiit. “When the government started offering rebates, I jumped at the chance to install one.”

”The plan is to be self-sufficient throughout the summers. The solar energy stored and distributed by Quipower will power our home and two hybrid cars. Last year we only got to use 3000 kWh out of a total of 8000 kWh produced solar energy.”

Tiit Nurmela

Available alternatives

“I looked at different alternatives and got in touch with a local installer. The original home battery I had in mind was apparently seriously outdated, but they recommended I go with QuiPower from Enequi. I ordered delivery and installation of the QuiPower system from them, and the whole process went very smoothly. Installation took a few hours and the service from Enequi has been top notch – they helped me fine-tune the set up. The rebate process for energy storage investments was equally smooth. I had my application approved by the authorities in less than half a day.

Results and benefits

The QuiPower system enables Tiit to save the solar energy generated during the day and use it later in the evening or when it’s cloudy. It even has integrated car charging. The system also monitors power consumption in the property, no matter if it’s solar energy or energy purchased directly from the local grid.

“I really believe in the future of energy storage. Many different parameters can be configured but I’m not convinced I’ve got mine exactly right yet. I’m still figuring the optimal phase loading configuration in the property, which Enequi are helping me with. The plan is to be self-sufficient throughout the summers, although I  may have to increase the battery capacity to achieve that. I’ll evaluate it after the summer I guess.”

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*kWp = kilo Watt peak is the unit used when measuring the peak power that a solar panel can generate under favorable conditions.