Why Solar Panels Transform Home Energy Use

Solar panels are a revolutionary way for modern homeowners to both save money and reduce their environmental footprint. Able to harness incredible amounts of sunlight and turn it into usable electricity, these systems can save homeowners 60% to 90% of their monthly electric bill. That impact is even more pronounced for EV owners, who tend to double their home solar system usage with an electric vehicle in the garage. In addition to realizing immediate cost reductions, values of properties with solar installations, on average, increase by 4%, making solar a sustainable long-term investment. The environmental rewards are equally impressive: a standard home solar system prevents 3-4 tons of carbon emissions each year. In regard to ROI, most homeowners recoup their entire investment in 5-8 years and continue to save on their energy bill for over 25 years! “Most importantly, is being able to be insulated from grid fluctuations – solar homes can see very stable, predictable energy costs while everyone else’s energy costs continue to rise.” Everything a solar-powered home would consume from the grid during peak rate hours, when grid electricity can cost 3x the standard rate, the solar-powered homes simply take from their own clean energy supply, effectively negating these off-peak premium charges.

EV Charging Integration with Solar Systems

The addition of charging for electric vehicles in combination with solar involves some thoughtful consideration and planning in order to get the most out of an investment and save on costs. How much energy does an electric car use? An average electric vehicle will use between 2,000-4,000 kWh per year, which requires an additional 6-10 solar panels to cover charging. 240V Level 2 chargers — with charging capacities of 30-50 miles of range per hour, depending on the vehicle — directly couple with solar installations or grid-tied systems. With the help of smart charging controllers, automatic charging during high solar input maximizes self-made power consumption.

home solar system

Step-by-Step: Connecting Your EV Charger to Solar

Automated Integration The first step in the charging process is the automatic sector connection, from the main electrical panel to the charging point. Key equipment features a solar-ready EVSE charging station, power monitor and smart charging schedule controller. Installation and permitting must be performed by a qualified electrician in compliance with the National Electrical Code (NEC), and any other applicable local, state and national codes and regulations and Article 625, Electric Vehicle Charging System. New smart chargers have inbuilt energy monitoring and scheduling, so you can monitor solar production and adjust your charge time. With the right setup, surplus solar production can be stored in an arrangement known as net metering, essentially banking energy credits for when the sun goes down. Real world results: as much as 90% of charging costs saving when optimizing solar systems to charge their electric vehicles, some even have completely free charging over the summer months!

Affordable Battery Backup Solutions for Solar Systems

Battery backup systems are key to improving the overall effectiveness of solar EV charging by allowing excess energy to be stored during the day and accessed at night. Lithium-ion batteries. Very high performance with 10 – 15 year life and 90% depth of discharge but with premium upfront cost. Top brands such as EcoFlow have brought to market ultra-portable power stations that double as an adaptable backup solution and where you can store solar power for both home needs and charging an electric vehicle. The Lead Acid replacement solutions are more affordable to get started, but must be replaced every 5-7 years and you get half the usable capacity. For long periods of overnight EV charging, the desired battery system must have storage capacity of at least 10-15 kWh to handle an average long session. The capability of fully charging the most EVs even in cloudy days – due to the adjustable angle makes the solar panel to face the sunlight directly.

home solar system

Budget-Friendly Battery Options

In recent years very affordable battery options have become available, the most popular being the LG Chem RESU and Pylontech US2000. Modularity allows these systems to grow with a family’s needs, beginning at 5kWh. Current federal tax credits pay for 30% of battery storage costs when combined with solar, and many states give generous additional incentives typically between $2,000 and $5,000. Professional installation can be completed by the homeowner and will save 40-50 percent off the cost. DIY installation saves money, but you also increase the ability for an attacker to not completely bypass the alarm and keep your warranties active. To maximize value, consider beginning with a smaller battery system that’s sized for critical loads and EV charging and can be expanded over time as funds become available. Today a lot of the vendors provide the possibility of easy expansion without the need to completely design the system anew.

home solar system

Building Your Complete Home Solar System

To design a reliable solar-powered EV charging system may involve the proper selection and the integration of some components. The average installation requires solar panels that produce between 7-10 kW, accompanied by a grid-tied inverter that matches the system size, as well as a Level 2 EV charger rated for 40-48 amps so you can enjoy the fastest possible charging times. Compatibility between components is key when choosing equipment – for leading brands like SolarEdge and Enphase, integrated options are available which deliver seamless communication across inverters, monitoring and EV charger. Installation typically occurs 2-4 weeks after permit approval and the installation of the mounts and electrical work will take 2-3 days. Installers should be professional and certified by NABCEP and should have documentation of UL-listed equipment that meet NEC requirements.

Cost-Reduction Strategies

Making it as affordable as possible really needs to begin by taking advantage of incentives that exist. The federal solar tax credit now offers 30% back on total system costs, while many states also give tax breaks anywhere from $1,000 to $7,500. Local utility companies often provide rebates for solar installation and EV charger integration. HOME Loans for solar options are available to finance systems and in the 2.99-6.99% APR range and up to 20 years which is better than even traditional home improvement loans. Solar leasing programs offer zero-down incentives, but usually provide less long-term savings. Community solar programs can also save customers 10%-20% by buying in bulk. When you’re negotiating with installers, ask for several quotes, and have an eye out for any group discount that you may get if your employer or homeowners’ association is involved. A few installers provide additional discounts for those referred to them or allowing them to install during their off-season.