How I Installed a DIY Solar Power System and Converted My Home to Batteries.

For years, I debated whether installing solar panels on my home made sense. The math just didn’t add up, and I refused to go into debt by signing a $30,000 contract or leasing a door-to-door solar company. It wasn’t until late 2025 that the market finally forced me to make a decision.

The combination of steadily looming electricity rate increases, the expiration of federal tax credits on January 1, 2026, and the actual improvements in battery technology in recent years has transformed a distant “maybe someday” dream into an achievable DIY project. The announcement of a new hyperscale data center just a few cities away made me finally decide to go ahead with it. Many of my projects that require experimentation are driven by curiosity. I enjoy seeing if I can achieve a goal without spending as much money as expected, and I confess I’m motivated by the feeling of unexpected success. Showing ingenuity and effort feels like a cavalier gesture of disdain for what I’m told I should buy, and nowhere was that feeling more satisfying than with this solar project. If you’ve ever considered going solar, I know how daunting it can be. But in my experience, the effort was worth it for what I got in return.

Planning my solar panel system

Traditional grid-connected solar power systems use the electricity generated by solar panels and feed it back into the public grid. Consumers are then compensated by their electricity supplier for the excess electricity generated by their solar system. However, recently, suppliers have stopped compensating consumers at the rates they set themselves and have instead begun offering energy credits, which cost a fraction of the price they sell you for electricity.

The current cost-recovery model for energy production is, frankly, absurd. Imagine you’re an apple farmer selling apples to a supermarket during harvest time. You’re given a 1:1 credit to ensure you have apples from their suppliers when your orchard isn’t producing. Only now you’re charged as a consumer, not as a producer. These 1:1 credits only allow you to get 1/3 of the apples you supplied to the supermarket. They do the same to all the apple farmers in the area, making money as middlemen. No consumer business should operate this way, but energy suppliers do.

Instead of giving away the generated electricity at a discount, I wanted to conserve as much as possible and put it to good use, so the first step in creating my energy system was choosing a battery. A battery system stores excess energy generated during the day for later use when the system isn’t generating power. After extensive research on Reddit and watching YouTube videos, I settled on the EcoFlow Smart Panel 2 + Delta Pro Ultra system . The reviews were quite good, and Costco had a great package for less than similar kits from competitors.

The bulk of my overall project budget went to this battery, inverter, and solar panel system: I spent just over $8,000 on the entire setup, before rebates. (Considering I only spent about 20% of that on the panels themselves, it makes you wonder how solar panel vendors set their prices. A traditional grid-tied system would have cost more than three times as much as a battery system and wouldn’t have provided me with any storage.) I didn’t want to pay rent or make payments to the solar company for power I couldn’t even use.

How I chose my inverter

If the solar panels in your system are the “muscles” that generate all the energy, then the system’s inverter(s) are the “brains,” providing access to all the generated electricity. Inverters convert the direct current (DC) generated by your panels into alternating current (AC) used by your home and appliances. Without an inverter, your system will be inoperable. There are three main types of inverters used in solar projects:

String inverter : The most cost-effective solution, in which a series of panels are wired together and connected to a single inverter unit. This option is best suited for rooftop solar panels with minimal shading.

Microinverters : Each solar panel (or group of panels) is connected to a small microinverter, ensuring maximum power production from each panel and eliminating shading effects from other elements in the array.

Hybrid system : This is the most common solution for battery backup systems like mine. The Delta Pro Ultra has both a high-voltage and a low-voltage inverter system. The two inverters convert DC power directly from the panels and then distribute it where needed. The power is either sent to the batteries for storage or to the home for immediate distribution. Most often, the system performs both functions simultaneously.

Selecting the right inverter for your solar array, with the required voltage tolerances, is a crucial step in system planning. I chose the EcoFlow system for the simplicity of a ready-made system, but you can try building it yourself as much as you feel confident. Just remember that if you accidentally apply too much current to an inverter that isn’t rated for that power level, you’re likely in trouble. At best, the system will shut down to protect its internal components from electrical shock; at worst, you could end up with burnt internal components, a melted inverter, or even a fire. Don’t assume you can just plug everything in and use it.

How I chose solar panels

I chose Signature Solar for my solar panels and accessories because they’re one of the few suppliers willing to deliver pallets of solar equipment directly to homes. Almost everyone else in the solar market wants to sell you a pre-installed system, which is exactly what I wanted to avoid. I’d been monitoring their sales and discount sections for weeks when I stumbled upon a great deal: URE Peach 390W solar panels for $99 each. They’re not the newest or greatest solar technology, but they’re a far cry from the foldable, portable 100W panels I’d been experimenting with. I bought 10.

I decided to start with ground-mounted solar panels. Maybe someday I’ll be able to afford professional rooftop installation, but for now I wanted to test the system’s functionality before investing in additional work. Right now, the panels are still on the ground, and I’m not sure I’ll be moving them anytime soon. A rooftop system would likely provide a much greater boost in output, but for now, I’m using a ground-mounted system. It just works.

If I could do it all over again, I would have chosen metal frame racks instead of the PowerField PowerRack containers I purchased from Signature Solar. The PowerRack containers I chose are molded plastic containers designed to fit all solar panels, allowing for quick and easy ground mounting. The “one size fits all” promise proved true; my panels did fit—just not very well. Racks are a much cheaper and simpler option. My containers, at $75 each, look a bit clunky and unsightly.

Check your local rules and regulations before purchasing solar panels.

If you’ve decided to join the solar revolution, your first step should be to contact your local government to learn about regulations, permits, and any restrictions regarding installing solar panels on your property. Some areas have very relaxed regulations for off-grid systems, while others have specific guidelines for where panels are allowed on your property and how they must be installed. The only major hurdle I had to overcome was obtaining an electrical permit for installing additional panels, but it’s worth double-checking the regulations in your area before clicking the “buy now” button on a pallet of panels. You can also take the opportunity to find out if there are any other local or state incentives for installing solar panels. Start by checking:

1. Local municipal building department: They will handle all necessary permits for electrical work.

2. Your state’s Department of Energy or Public Service Commission: These agencies monitor customer incentive programs and connection requirements. These agencies can advise you on which programs may be available for your home and which local regulations may apply.

3. Your electricity supplier’s connection policy: If you plan to connect your system to the grid, you will need to contact your local supplier to ensure you comply with their rules.

Understanding how my power system works

One of the most challenging aspects of installing solar panels yourself is the need to quickly master electrical engineering and wiring. Solar panels are often perceived as harmless, but it’s important to remember that these systems carry a significant electrical load, and improper installation can damage inverters, batteries, the home’s electrical system, or even cause a fire. Electrical safety is something you shouldn’t learn on the fly.

Imagine filling a bucket with water from a garden hose. Solar panels collect sunlight and generate voltage (water pressure) and amps (the current at which the water flows). Together, these create power output, or the rate at which water is pumped from the hose and used to fill the bucket. The total amount of water ultimately stored in the bucket is your energy, measured in kWh (kilowatt hours). This may seem complicated to someone new to this field, but I promise it will all become clear once you dig a little deeper. Of the 10 390W panels I ordered, I used nine for the main array. The EcoFlow Delta Pro Ultra panel I purchased has built-in inverters for both high and low voltage.

My high-voltage inverter consists of seven panels connected in series and produces approximately 339 volts. While more panels would have meant a higher potential voltage, I focused on operating within my inverter’s operating range of 80-450 volts. Being in the Midwest, I have to account for winter voltage surges, as cold weather can cause the panels to send a high-voltage spike to the inverter. When the outside air temperature reaches or approaches freezing, it reduces the electrical resistance of the silicon, which in turn causes the panels to output a higher voltage. If this surge exceeds my inverter’s maximum rating of 450 volts, it could damage my battery system. Using only seven of the ten panels keeps me within the ideal range.

My low voltage inverter consists of two panels, also connected in series, and produces approximately 82V, which is well within the 150V rating of this inverter, even on a frosty morning.

Because I needed to account for overvoltage, I had one extra panel left over from the ten I originally purchased. Earlier in my solar adventure, I purchased another, smaller EcoFlow Delta 3 1500Wh battery . A 390W panel, connected directly to the Delta 3 , powers the entire extension to my house (a room on a covered porch, approximately 500 square feet), including a 65-inch TV, a soundbar, and the computer I’m using to write this article. This may be overpowered, but it uses an extra panel that would otherwise sit against the wall in my garage. My next project will be installing a 120V mini-split heating and air conditioning system that can heat or cool the space using excess solar power.

Connecting my solar panel

This is where things can get a little confusing. I’d advise anyone planning a similar project to first think through their system. Determine your daily energy needs, calculate the required watt-hours, and then design a system that best suits your needs. Don’t do what I did—order everything at once and figure it out later. It took some trial and error to determine the most efficient use of my panels and the optimal configuration— parallel or series connection , or, more likely, a combination of the two.

Series circuits

Series connection of panels involves connecting the positive pole of one panel to the negative pole of the next. This creates a chain, similar to hanging Christmas lights outside. The voltage is summed, but the current remains constant. Thus, if four 400-watt panels are connected in series, the voltage can reach 160 V. This setup is preferable for inverter systems with a high range and voltage tolerance. Series connection provides maximum power over long distances, but comes at a cost: if one panel in a series system is shaded, it reduces the power output of the entire chain.

Parallel wiring

Another connection standard, parallel connection, involves connecting all positive and negative terminals of the panel as expected (for example, the red cable from panel 1 connects to the red cable from panel 2). With parallel connection, the current is summed, while the voltage remains constant. This is ideal for inverters with low voltage resistance or solar panels that may suffer from partial shading.

Hybrid (series-parallel) wiring

I settled on a hybrid connection scheme, combining series and parallel connections, and it’s likely the choice of most home solar system owners. Using a hybrid scheme, homeowners can connect solar panels in series and then connect these groups in parallel. This method compensates for the shortcomings of the previous two by combining them. You get the maximum power output within the inverter’s specified range, and if one part of the array is shaded, the other groups of panels connected in series remain unaffected.

Then there’s the issue of grounding. If you’re using just a battery station and one or two panels, proper grounding isn’t always a consideration, and it’s often unnecessary. With a full array of panels, we’re talking about very high power levels that need to be safely distributed, or even minimized. I was lucky that the previous owner of my home had already buried an eight-foot copper ground rod and attached it to the house. The copper wire runs along all the panels and then connects to the main ground. Any surges or incidents like lightning need to be protected from bringing down my entire system. For added security, I installed a 40-amp DC distribution panel between the outdoor and indoor power lines. This way, if anything were to happen with a power surge on the main lines, the panel would take the hit before my expensive system. They only cost about $40 online, and it’s worth the peace of mind. They also offer a momentary cut-off switch in case you don’t have access to the main inverter in an emergency.

Where I decided to hire a professional

Why should you hire a professional to install the Smart Home Panel 2 instead of a battery pack? Connecting a battery pack to the main electrical panel involves working with 240V lines and currents exceeding 100A. Simply put, if you don’t know what you’re doing, it can be very dangerous. Most local authorities require that an additional panel be installed by a licensed electrician. Wiring, grounding, and mounting the battery pack are generally approved for DIY installation by local authorities (you should check this), but the final connection to your home’s existing electrical infrastructure requires the knowledge and safety precautions of a professional.

I already had an electrician who had recently installed a similar system for a neighbor, so I figured that was enough, but EcoFlow offered to connect me with certified installers they could recommend in my area. This is a good option if you don’t already have a trusted electrician.

I needed a qualified electrician to install the EcoFlow Smart Home Panel 2 I purchased. This smart panel draws power from an inverter/battery and distributes it throughout the house as needed, powering individual circuits off the main panel and using grid power when needed. It’s a great system, but when I saw how much work it would require to install, I was glad I hadn’t convinced myself by watching a YouTube video. Seriously, call a professional for this part of the job; it’s dangerous. My electrician connected the new smart sub-panel, and we discussed which circuits were most important to convert to solar power.

How much energy does solar power generate (and how much money do I save)?

My solar power plant didn’t launch until November 2025, and if you know anything about solar energy production, you know that’s not the best time of year to generate power. However, even in low-light conditions during the fall and winter, my system consistently exceeded my expectations.

In the height of summer, I’m especially pleased by how much of our home’s electricity consumption is met entirely by solar power. The daytime load is split between charging the batteries and meeting the house’s immediate needs during the day. Around 6 or 7 p.m., the house begins drawing power partially from the battery system, and then completely from the batteries overnight.

While it will take a full year of use to get accurate data for comparison, I know for sure that my electricity bill has increased: instead of a grim chart showing that we use 60% more electricity than our most energy-efficient neighbors, I received a congratulatory letter stating that we’re in the top 1% of energy-efficient consumers. When this letter arrived in the mail, I felt a sense of pride.

On a typical day in June or July, with the air conditioner running, we typically consume about 20-22 kWh per day. I generate about 15-17 kWh per day, so from 5 to 8 a.m., when the batteries are discharged to the emergency reserve (my batteries store the last 10% of energy in case of a power outage), there’s still a small draw from the grid, but I can expand the system at any time. I’m looking forward to seeing what next year will bring.

Using solar energy as a backup power source during a power outage.

This year, we were hit twice by severe thunderstorms and gusty winds, which knocked down trees all over the neighborhood and caused power outages. Both times, I didn’t even know about the outage until a neighbor texted me asking how we were still getting power. I admit, it’s nice to receive messages like that. EcoFlow advertises an inverter that can switch between grid and external power in 10 milliseconds , without any connected devices losing power. I haven’t experienced even a brief outage, so I think their claims are accurate.

My last piece of advice before you start building your own solar power plants

If you’re considering finally going solar, test it first. Before purchasing a whole-house system, I bought a refurbished 1500-watt EcoFlow Delta 3 unit on eBay for about $400, which is certainly much less than investing in a whole-house system. I used the Delta 3 to power an extension of my house. It was powerful enough to run my office computer, TV, and a floor fan on my covered porch without air conditioning, allowing me to test different areas of the property and figure out where I could install a more permanent solution.

When I wasn’t using the outbuilding as an office, the Delta 3 doubled as my solar charging station for devices. Even if we only used this small battery as a standalone charger for a whole house of phones, tablets, portable devices, and garden equipment, we’d still save money. Over time, this quickly adds up, as almost every device we use these days has a rechargeable lithium-ion battery. Especially considering that electric scooters and lawn mowers have become commonplace in suburban garages.

Ultimately, I was pleased with the EcoFlow system I installed and can confidently recommend it to others who may be looking for a similar solution. However, this doesn’t mean that similar options from companies like Anker and others aren’t equally good. This isn’t an attempt to favor any one product over another, but rather a summary of my personal experience.

If I had it to do over again, I probably wouldn’t change much. There were some head-banging moments and “how could I have been so stupid?” lessons, but that’s the beauty of any project: I learn something new while simultaneously improving my home and saving money. Of course, it’s understandable why not everyone wants to tackle everything head-on, researching and installing a system simultaneously, especially given the upfront costs. But I’d advise others to first consider their wants, needs, and expectations before taking on the project in earnest.

There are very few contractors willing to work with solar panels. I found many companies willing to sell me a complete power system, but most general contractors were unwilling to install the equipment on the roof after I’d already purchased it. I hope that over time, more professionals will join the process. General contractors need to understand that homeowners want to achieve energy independence without long-term contracts.

Meanwhile, I feel like I’ve accomplished something incredible. I can wake up in the morning, look at my panels, sip my coffee, and know that free electricity powers my life. This wasn’t just a hobby project; it was a step toward energy efficiency, reliability, and independence.

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