40kW Solar System

40kW solar system

Getting your own solar system is like acquiring a great business asset and making a smart long-term investment. In this section of our website you can find a 40kW solar system of your preference. A PV installation is more than just solar panels though, and the components should match to function well together. We offer systems where all the parts are sized perfectly to work as one entity.

What is a 40 kw solar system

PV systems of a large scope are usually ground-based grid-tie installations. Grid-tie configuration means that you’re free to use solar energy and electricity from the commercial grid at the same time. You can sell solar energy to your utility to make your electric meter go backwards. It’s called net metering and it's the main way in which a 40 kilowatt solar system pays for itself.

Grid-tie systems are the simplest in terms of components of a kit. You only need solar panels and an inverter. To build a 40000 watt solar system you would need from 60 to 130 PV modules, depending on their wattage. If space is an issue, you can go for bifacial solar panels. Their active rear side also generates electricity and provides up to 33% bonus to the rated production of the front side. However, proper installation is very important to increase the reflectivity of a surface and the bifacial gain. The 40kw solar system size will in the end depend on the panels that you’ll choose.

When it comes to production of your system, several factors come into play, such as weather, positioning and tilt of your panels, number of sun hours in the area, shading and, of course, the properties of the panels themselves. In June panels produce around 50% more energy than in December. In California 180-220 kWh is how much does 40kw solar system produce per day. However, the production levels are going to be lower, for instance, in New York where there is less sunlight.

While grid-tie configuration is the most common choice, you can also go for hybrid or off-grid design. The problem with a 40kw solar system with batteries is getting storage of a capacity that is large enough. Battery storage provides backup during power outages in the grid. However, it’s going to greatly increase your expenses.

40kw solar system cost

Ground-based systems are cheaper to install than rooftop ones. However, they require a lot of free land that could be used for something else instead. The cost of 40kw solar system is going to depend on the configuration and the panels that you’ll use.

Chinese solar panels are the most common choice for large systems because they are the cheapest and have high efficiency numbers. Look for brands like Jinko Solar, JA, Trina, Longi Solar to construct your 40 kwh solar system. American-made panels from brands like Mission Solar, Silfab, Aptos Solar are slightly more expensive, but the warranties for them are often better. Premium-class panels from LG, Panasonic, Sunpower are usually not an option for installations of such a scope — they are simply too expensive.

The configuration is also going to impact your 40kw solar system price. Grid-tie design is the simplest and the cheapest and it guarantees steady income if net metering is available. Hybrid installations are a bit more costly since you’ll have to add energy storage. The 40kw off grid solar system price is going to be the highest among these three, and you also don’t have a net metering option.