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Marc from Tongeren installs solar panels, home battery and smart charging installation: “Day after day I see profit” |  MyGuide

Marc from Tongeren installs solar panels, home battery and smart charging installation: “Day after day I see profit” | MyGuide

The Vandewal family from Tongeren has invested in solar panels, a home battery, and a smart charging installation. “A serious investment, but definitely worth it,” Mark Vandewal explains. Construction site Livios. “Every day we see the profit.”

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Ten years ago, the Vandewal family from Tongeren had a 5 kW solar panel installed at the peak. In the past 10 years this has been followed by a second 5 kW peak power installation, a second inverter, and a home battery and charging installation. “A serious investment, but definitely worth it,” says Mark Vandewal.

Mark Vandewal and his family live in a house built in 1987, where heating oil and a condensing boiler provide power. Domestic hot water is generated partly on fuel oil and partly through solar thermal panels. Those are the paintings that Capture solar energy and convert it into thermal energy or heat. You should not confuse these solar panels with photovoltaic or photovoltaic solar panels that convert solar energy into electricity. The insulation of the house remains the original: 4 cm in the cavity of the walls and 10 cm on the roof. In 2012, the family consisted of five, now there are three.

“In 2006, we installed a swimming pool and heat pump,” says Mark Vandewall. “And when that pump works in the summer, we need a lot of power. That’s why we installed the solar photovoltaic panels in 2012, before subsidies via green energy certificates were reduced again on July 1 of that year.”

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Solar panel installation

Installation from 2012 has 24 solar panels and inverters, fit for 5 kW peak capacity. Another installer doubled that capacity in 2019 by adding another 25 solar panels to the roof. Thus, the Vandewall family has a peak of 10 kW, which is the maximum power allowed for private homes. Including the reflector, 6800 euros were paid for the second installation. The first installation – also including the inverter – cost much more: about 13,100 euros. However, Mark Vandewal could pull back from support with green energy certifications for the first install. It has a separate counter for this. For the second installation, the family is no longer entitled to benefits, because you can apply for them only once.

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home battery

In 2021, the Vandewal family purchased a 15 kW household battery. “It got really interesting for us thanks to the premiums,” Mark Vandewal says. “We mainly need it to charge the car at night. Our hybrid car needs 10 to 11 kilowatts to be fully charged. So there is still 4 to 5 kilowatts left for other appliances that use electricity at night: for example the fridge and freezer.”

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Shipping installation

This spring, the home got another device: an Etrel smart car charger mounted on the garage wall. “The charging station looks at the electricity needs of the house. Accordingly, it takes the rest of the electricity,” explains Mark Vandewal. “When the pool pump is on, the house needs a fair amount of power. When you plug the plug into the car, it automatically dims. Once the pool pump is turned off, we can use the charging station at full power. maximum amperes”.

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The cost of electricity for the Vandewal family is 1,100 euros per year. “We pay just under €90 a month. That would also be almost enough to settle. In the past, without solar panels, I used to get advance bills of €180 a month, and sometimes I had to pay extra.”

Mark Vandewal returns excess power to the grid. He receives money for this from his own power supplier. “Over the past three months I have injected much more electricity than I took off due to the good weather. But it is just the opposite in winter. In principle, I have to buy electricity mainly from September to the end of February. I am not sharing energy at the moment. I I haven’t looked into this yet.”

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Investing with a return

Mark Vandewal admits he had to invest seriously. In all, he paid about 30,500 euros: 13,100 euros for the first installation, 6,800 euros for the second installation, 8,400 euros for the battery and 2,200 euros for the charging installation. “But once everything works, you see your earnings day in and day out.” For a portion of that investment, Mark Vandewal may back off on government support. For the household battery, this included a premium of approximately 2,100 euros. Mark also receives a green energy certification every time he produces 1,000 kWh of electricity, which means 217 kg of CO2 emissions have been avoided. The amount of green energy certification depends on the year you started using your solar installation. With Mark, that’s 230 euros per certificate.

Lower electricity costs for many years

On August 12, 2022, the meter reading indicated a consumption of 56,193 kWh. With that size, Mark is now ready to get his 56th Green Energy Certification. This means that he has already recovered 12,880 euros (56 x 230 euros) of the 13,100 euros he paid for the first installation. “In a typical year, the installation produces five green energy certifications, but this year it may be more because of the good weather,” he says. “With my next certification, installation costs were reimbursed, but in principle it happened much earlier because I’ve been costing less electricity since my solar panels all those years,” Mark concludes.

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