Achieving energy autonomy is becoming more important for a growing number of families as energy costs rise and environmental concerns grow. If you're already using a plugin solar kit and want to boost your energy production, you're in luck. By connecting two of our Robinsun Performance 800 W plugin solar kits, you can significantly increase your energy output, reduce your dependence on your utility company, and even take advantage of surplus compensation. Here’s how you can do it. 

Why connect two plugin solar kits?

When evaluating the installation of two 800 W plugin solar kits at the same location on the south of Europe with identical slope (20°) and azimuth angles (0°), the advantages of doubling your solar capacity are even more compelling when considering current electricity prices.

The first solar kit, with a capacity of 0,89 kWp, generates approximately 1.640 kWh annually. By installing a second kit, doubling the capacity to 1,78 kWp, your annual production doubles  to 3.280 kWh. This boost not only enhances your home’s energy autonomy but also results in significant savings on your electricity bills.

With the cost of electricity at €0,26 per kWh, the first 0,89 kWp kit would save you approximately €426 annually. By doubling the capacity with a second kit, your savings double to around €852 per year. Given that the solar panels come with a 30 year warranty, these savings accumulate to a substantial amount over time. Over the full warranty period, the single kit would save you around €12.780, while the double kit installation would save approximately €25.560.

These considerable savings provide a strong financial incentive to invest in a second 800 W plugin solar kit. The larger installation not only increases your energy production but also significantly reduces your reliance on grid electricity, securing greater long-term savings. By maximizing your solar capacity, you ensure enhanced energy autonomy and make a smart, future-proof investment that pays off over the next 30 years.

The importance of certification (CIE) for higher savings

When you decide to connect two 800 W plugin kits, your total output will exceed 800 W. In many countries, including Spain, installations above 800W require the involvement of a certified installer. In Robinsun, we offer this service of CIE, that not only ensures that your installation complies with local regulations but also opens the door to additional benefits. Additionally, we are expanding our options for our clients, with the installation service for those who want an expert installer to complete the installation of their kit. In case you are interested in this service and want to see the availability of this service in your region, contact us via email, WhatsApp or call us directly.

One of the most significant advantages of getting your setup certified is the ability to receive compensation for surplus energy. With a CIE, your electricity company can offer you financial compensation for the extra power your system feeds back into the grid. Alternatively, some companies provide a so-called “virtual battery” service, where you can store your surplus energy and use it later when your energy consumption exceeds your solar production.

Additionally, a CIE may be necessary to qualify for various government incentives or subsidies related to solar energy. These incentives can further reduce the cost of your investment and make your solar setup even more attractive.

Obtaining a CIE for your expanded solar installation is a straightforward process and we are happy to inform you that we currently are providing this kit certification service through all of Spain’s communities. Here’s what you’ll need to get started:

• Scanned copy or photo of your ID
• Copy of a recent power bill
• Your property’s cadastral reference (This can usually be found online or on your property deeds)

Once you’ve gathered these documents, we can submit them to get the certification service with our specialized team of certified engineers. The certification process typically takes a few days, depending on demand, and its cost will vary as regional taxes may apply, depending on where you live, which compared to the standard price of €999 for a 1 kWh battery is a great deal. 

How to complete a safe installation 

When installing two solar kits, you have two options to consider:

1. Sequential Connection: Due to the high demand of our clients, our solar kits come with Tsun microinverters, these include an additional cable to make this sequential connection between solar kits more effortless. You can connect one kit to another in sequence, creating a combined 1.600 Wp installation and then simply connect them to a single plug. For this setup, it's crucial that the plug and wiring are of high quality to safely handle the increased load. We recommend using our newly restocked Betteri extension cables, designed specifically for safely connecting multiple solar kits. These cables ensure a secure and efficient connection, maximizing your system's performance.
2. Separate Connections: Alternatively, you can connect each kit to separate electrical circuits by plugging them into different outlets. To determine how many circuits you have, a quick check of your electrical panel will usually give you an idea of how your home’s electrical network is configured.

Additionally, all of our kits come with a monitoring app, allowing you to track the real-time power generated by your solar panels, no matter if you choose the first or second option of installation. This ensures you can optimize and monitor your solar energy production effortlessly.

Conclusion

Connecting two Robinsun Performance plugin solar kits is an excellent way to increase your energy production and achieve greater energy autonomy. With our betteri extension cables and proper certification, you not only ensure compliance with local regulations but also unlock the potential for surplus energy compensation and access to government incentives.