112 Wat is de terugverdientijd van een thuisaccu?

• For more information about the HPS-1 system: https://www.energie-transitie.info/th... • For more information about the home battery: https://www.energie-transitie.info/th... • Download the tips & tricks about home batteries: https://www.energie-transitie.info/ti... In the media, you hear all sorts of things about the payback period of home batteries. One person says: "You'll earn it back in 4 years," while another claims: "You'll never earn that back." But what's actually true? Let's look at my situation: without a battery vs. with the home battery. So far, I only have a limited number of solar panels, and the yield is lower than my consumption. I'll be adding more later this year, but more on that later. My total annual consumption is 5439 kWh. To calculate your energy consumption accurately, you need to add the smart meter's consumption to the difference between the solar panel yield stated, minus the energy fed back into the smart meter. This is your actual consumption. Your smart meter doesn't register your direct self-generated energy consumption. The solar panels yield 3007 kWh. And the direct self-consumption is around 30%, which is 902 kWh. My energy fed back into the smart meter is 2105 kWh. Net consumption from the grid is almost 4537 kWh. With a fixed contract (like I had with Essent), you pay €0.35 per kWh, including all the extras. Thanks to the net metering until 2027, you'll ultimately pay €851.20 per year for electricity. For convenience, I'm not including the feed-in costs, which are often still payable despite the fact that you're allowed to net metering. This is the situation with a home battery and a dynamic contract. With a home battery, your self-generated electricity consumption increases to around 60%. This means I have a grid-supplied electricity consumption of 3634.8 kWh. My average dynamic rate was €0.22, which amounts to €799.66 in costs. With a dynamic contract with a smart battery system, you naturally feed your self-generated electricity back into the grid at the most favorable times for the highest rate. If you can also trade on the day-ahead market, you also generate income. This, in turn, depends on the capacity of your battery. Two years ago, I made the mistake of not differentiating between the purchase and sales price when setting up my home battery, and that resulted in only a very small positive result for me. This is because you don't take into account the system's revenue losses. This year I did, and it looks much more favorable. All in all, I now have a profit of €325.48. When all the figures are compared to a fixed contract, that's a €377.02 advantage. Yes, that's not a lot, I hear you say. But it could have been much higher if I had to pay feed-in charges and had configured my system better. But what happens after 2027? After 2027, net metering will be over. Without a home battery and with a fixed contract, you'll then pay for your entire grid consumption. That's €1587.92. We're also receiving initial reports from energy companies that no longer want to compensate for feed-in. Let's stay somewhat positive and do some calculations for this. That would bring the total cost to €1545.82. With a home battery, your costs will remain comparable to now: €799.66. But here too, you'll lose the benefit of the energy tax and VAT that you can currently reclaim. However, you will receive a refund for the cost of the energy. Of course, we only feed back energy when the rate is higher, so let's assume €0.15. If we continue calculating everything, we arrive at a benefit of €1016.61 per year after 2027. What does this mean if you only consider the payback period? If you consider a payback period of 6 to 7 years, the table that applies to me shows you what your investment potential is. Be careful, because there's a lot to be gained here. • Choose a system with a high charge/discharge rate – this way you optimally benefit from price differences in the day-ahead market, but also from your own consumption. You really need this when you generate your own electricity and also consume it yourself. For example, for electric cooking, washing machines, kettles, etc. • Consider a single-phase system that offers three-phase compensation (like I use). This ensures a net-zero energy consumption, minimizing your own energy consumption. These systems are also cheaper than a three-phase system. • Check the additional options of the battery system, such as connecting additional solar panels that can directly charge your batteries. • But also whether an emergency power supply is possible. • Whether you can peak shave. I personally have the HPS-1 system with all these features on board. It's available starting at €5,200.