Month: October 2026

When you invest in a solar system, you expect dependable energy production month after month. So when you notice solar panels underperforming, it can feel frustrating and confusing, especially if your system has been reliable for years. The good news is that lower energy output usually has a clear cause, and many fixes are straightforward once you pinpoint what changed.

Your solar panel performance depends on sunlight, temperature, equipment health, and practical details like cleanliness and wiring. Below, we’ll explore the most common reasons a solar panel system produces less than expected, what you can check first, and when to call in a professional for troubleshooting & repairs.

Start with your monitoring system and your baseline energy output

Before assuming something is wrong, confirm what you are comparing. Most residential solar systems include a monitoring system that tracks power output and daily totals. Look for trends across weeks and seasons rather than focusing on a single low day. Rainy weather, smoke haze, or shorter winter days can reduce the amount of energy your array produces even when all equipment is working properly.

Compare the same month year over year. If last year’s May was sunny and this year’s May brought inclement weather, your solar energy totals can drop without indicating solar panel issues. If your monitoring data shows a sudden step down that persists on clear days, keep going through the checks below.

Are my solar panels underperforming or is it normal variation?

It helps to separate normal swings from true performance issues. Solar does not produce a flat line of electricity all year, even with the right solar panels and a solid design. Weather conditions, day length, and sun angle change constantly, and your system will follow.

You are more likely dealing with real solar panels underperforming when you see patterns like these:

• A sharp drop in energy output that does not recover on sunny days with direct sunlight
• One section of the system producing far less than the rest (often tied to an inverter or string issue)
• Frequent monitoring alerts, communication errors, or missing data that point to a management system or connectivity problem
• Visible severe damage on the roof or on the surface of solar panels

Common reasons solar panels underperform over time

Most underperformance comes down to a short list of various factors. Some relate to the environment around the array, and others relate to the equipment that converts DC solar electricity into usable AC power for your home.

Shading changes and potential shading from trees or new structures

Even partial solar panel shading can cause noticeable power loss. A growing tree, a new fence line, a dormer addition, or even seasonal leaf-out can create potential shading that did not exist when the system was designed. Shade affects the solar cells inside a panel, and the system’s overall power output can drop when one part of an array is routinely shaded.

If shading is the issue, a service visit can help confirm the impact and identify practical options to restore consistent sunlight access.

Dirt, pollen, and bird droppings on the surface of solar panels

Solar panels are durable and made to live outdoors, but grime still blocks light. Heavy pollen seasons, dust from nearby roads or fields, and bird droppings can reduce the light reaching the solar cells, lowering energy production. Cleaning can help, and it should be done thoughtfully to avoid harming the glass or seals. Kokosing Solar offers panel cleaning as part of solar service and maintenance, which is a practical option when you want the job done safely and efficiently.

High temperatures and hot spots

Solar panels generally produce less power as they heat up. High temperatures can reduce panel efficiency and lower mid-summer energy output, even on bright days. In some situations, localized heating can create hot spots, often tied to shade, soiling, or damaged cells. Hot spots are worth addressing because they can affect long-term solar panel reliability.

If you suspect heat-related issues, monitoring data and a professional inspection can help confirm whether it is normal temperature behavior or something that needs repair.

Inverter, communication, and internal component problems

Your panels make DC electricity, but your inverter converts it into AC electricity your home uses. If the inverter is failing, misconfigured, or intermittently offline, your system can show major underproduction. Communication problems can also make your monitoring appear lower than reality if data is missing, delayed, or not reporting correctly through the management system.

This is where a service team can add real value. Kokosing Solar’s operations and maintenance support includes inverter & communication checks, and when needed, inverter replacement to restore dependable performance. If your system is solar panels underperforming with repeated alerts, do not ignore it, since small issues can create ongoing lost production.

Loose connections and electrical wear

Solar equipment lives through freeze-thaw cycles, wind events, and long summers of rooftop heat. Over time, loose connections or wiring issues can create intermittent faults or sustained losses. These are common issues that typically require a qualified technician to diagnose safely, especially since solar electrical components can remain energized in daylight.

A professional service visit focuses on identifying the source of the power loss, confirming safe operation, and returning your system to expected power production.

Could I be dealing with solar panel defects or manufacturing issues?

True panel failures are less common, but they can happen. Potential solar panel defects include cell cracks, failed bypass diodes, or other internal components that degrade performance. Some owners notice visible signs like snail trails, which look like thin, dark lines on the panel surface. Not every cosmetic change means a panel is failing, but it can be a clue when paired with a measurable drop.

If you suspect a defective panel, document what you see and what the monitoring shows. A reputable installer can help determine whether the issue is tied to manufacturing issues, installation conditions, or balance-of-system equipment.

When does underperformance become a warranty claim?

Warranties vary by manufacturer and product, so it is important to check your documentation for panel warranties and any coverage tied to inverters or racking. If testing shows a specific panel has failed or is materially below expected capacity, you may have a path for warranty claims. If the concern relates to workmanship or system configuration, the right next step is often a service inspection that documents findings clearly.

Kokosing Solar provides warranty support as part of service and maintenance. That matters when you need help gathering the right information, communicating the problem clearly, and getting your system producing enough power again.

A simple way to “show the math” on lost energy production

Solar is a long-term investment, so even modest underperformance adds up. Here is an easy example of why diagnosing solar panels underperforming quickly protects your ROI.

If your system is missing 5 kWh per day on average due to a fixable issue:

• 5 kWh/day x 30 days = 150 kWh per month
• 150 kWh/month x 12 months = 1,800 kWh per year

The value of that electricity depends on your utility rate, but the takeaway is consistent: every month of reduced production is money left on the table, plus added solar generation risk if a small problem turns into larger grave problems later.

What should I check before calling for solar service and maintenance?

Start with a quick, safe review that focuses on information you can access from the ground and from your monitoring portal. This approach keeps you informed and helps a technician move faster if you do schedule service.

Here is a smart checklist:

• Check your monitoring system for alerts, gaps, or a sudden drop in production.
• Compare today’s output to other clear-sky days, not cloudy days or storm weeks.
• Look for new shade patterns at the time of day you expect strong production.
• Inspect from the ground for obvious debris like leaves or visible bird droppings.
• Confirm your internet connection if your monitoring data suddenly stopped updating.

Avoid getting on the roof or opening electrical equipment. If the system is producing far less energy than normal, professional troubleshooting is the safest path.

When to bring in Kokosing Solar for troubleshooting and repairs

If you have ruled out normal weather variation and basic soiling, a trained service team can help you get answers quickly. Kokosing Solar is a full-service installer with decades of experience and a long-term commitment to supporting the systems we build and maintain. Our service offerings include troubleshooting & repairs, inverter & communication checks, panel cleaning, critter guard installation, and system checkups for new homeowners.

Ready to restore your solar panel performance?

If you are seeing solar panels underperforming, you do not have to guess. Schedule a solar service and maintenance assessment with Kokosing Solar and let our technicians run the numbers, review your monitoring, and pinpoint the cause. Turn the reliable, free energy of the sun into savings, and keep your system delivering clean energy year after year.

 

When homeowners start to consider solar, they’re usually interested in the lower electricity bills, but what some people don’t know is that there’s also an opportunity for greater independence, like battery storage.

A home battery can store electricity and provide backup power when the utility service is interrupted. For those that are concerned about grid reliability, severe weather or the rising costs in energy, battery storage is becoming bigger and bigger with solar conversations.

What is Home Battery Storage?

A home battery will store electricity so your home can use it for later use. If you have solar panels, battery storage captures the excess energy your system produces during the day. You can then use that stored energy at night, during power outages, or whenever your home needs additional power.

Solar energy works by allowing your solar panels to generate electricity from sunlight throughout the day. Your home uses this solar power first, helping reduce the amount of electricity you need to purchase from the utility company. When your solar system produces more energy than your home needs, the battery stores the excess electricity for later use. You can then use that stored energy in the evening, on cloudy days, or whenever your solar panels do not generate enough power to meet your home’s energy needs.

some cases, battery storage can also provide backup power during outages which helps keep essential appliances and deceives running when the grid goes down.

What Happens During Power Outage?

Without having a battery backup system, most grid-connected systems automatically shut down during an outage. This comes as a surprise to some homeowners but the reason this happens is for the safety of the workers repairing the power lines. But, when you have battery storage, selected parts of your home may continue to operate even when the grid goes down, depending on your system setup.

How Solar and Battery Storage Work Together

Both solar panels and battery storage systems serve different roles, but they’re still complementary to each other in a home’s energy system. Solar panels generate electricity from sunlight during the day while batteries are designed to store excess electricity for use when it’s needed later on. When they both work together, they can help homeowners maximize the energy that you produce from your solar system and they work to reduce your reliance on the grid.

A solar energy system consists of multiple key components. Solar panels capture sunlight and convert it into electricity. While an inverter transforms that electricity into a form that can be used by household appliances and devices. When your solar system generates more energy than your home needs, you can send the excess power to the grid or store it in a battery for later use. The battery provides backup energy at night, on cloudy days, or during periods of high demand. With backup capabilities, it can also keep essential appliances and systems running during power outages.

Can Batteries Work Without Solar?

In some cases, battery systems can charge from the utility grid. However, many homeowners choose to pair batteries with solar because it gives the battery a source of power to recharge from during normal operation.

Without a solar system, the battery will depend on grid power to charge. With solar, the system will use sunlight to help recharge the battery when conditions allow.

Why homeowners consider battery backup

Battery storage is gaining popularity as homeowners look for greater energy security, protection from rising utility costs, and more control over their power.

Sometimes it’s about more than the utility bill.

How Long Can a Solar Battery Last During an Outage?

The length of time depends on a lot of different factors, including battery capacity, energy usage, and whether your solar panels are continuing to recharge the battery.

A battery could provide backup power for several hours or even longer for essential loads. If your solar panels are generating electricity throughout the day, they may help recharge the battery and extend the available backup power. Battery storage isn’t just about surviving a short outage, It can also provide additional energy security during prolonged outages.

Benefits Beyond Backup Power

Most homeowners initially consider batteries for outage protection, but backup power isn’t the only benefit batteries bring.

Battery storage can also help homeowners:

• Store Excess solar production
• Energy independence
• Reduce reliance on the grid

Are Solar Batteries Worth It?

Whether batteries are worth it depends on your goals. If your main concern is lowering your electric bill, solar panels alone may provide enough significant savings.

If you’re concerned about power outages or grid reliability, a battery can add value to your solar system. It provides backup power, increases energy independence, and helps you use more of the electricity your panels generate. To decide if battery storage is right for you, consider your energy needs, outage history, and long-term goals.

Am I too old for solar?

The question isn’t whether you’re too old for solar. The question is whether you want to keep paying rising utility bills throughout retirement. This is something many homeowners who are in their 60s and 70s ask when they start exploring solar as an option. After retirement, many retirees find themselves living on a fixed income, which means being careful with managing household expenses and thinking carefully about long-term investments.

On the other hand, electricity bills don’t magically stop increasing when you reach this point in life. Many retirees spend most of their time at home which can lead to higher energy usage and as utility rates continue to rise, many homeowners will begin to look for ways to reduce their expenses.

This is why homeowners over 60 are going solar now more than ever. For many who are retired, solar helps lower energy costs, protects them against rate spikes and creates a more stable financial stability, all while helping the environment.

Why Retirees Are Looking at Solar Now More Than Ever

While retirement offers more freedom, it also comes with ongoing expenses like groceries, healthcare, insurance, and utilities. As costs continue to rise, many retirees are looking for ways to lower monthly expenses and improve financial stability.

One of the reasons retirees are going solar is because of the rise in electricity rates. Utility prices have increased significantly over the past decade, and many experts expect that trend to continue as energy demand grows and infrastructure costs increase.

For retirees on a fixed income, rising utility rates can quickly add up. Generating their own power can help reduce dependence on the grid and protect against future rate hikes.

More Time at Home Equals Higher Energy Usage

After retirement, you’re more than likely to spend the majority of your time at home. Whether you’re enjoying your free time, hobbies, hosting or even just relaxing, being at home during the day often results in higher electricity consumption. Because solar produces the most electricity during daylight hours, retirees often have an opportunity to offset a larger portion of their energy usage more than homeowners who are at work all day.

What if I’m Already Retired?

A common concern we see is whether they’ll stay in their home long enough to benefit from solar. Many homeowners in their 60s and 70s plan to remain in their current home for years to come. So, if you’re planning to stay, solar can help reduce one of your largest recurring expenses, electricity.

Rather than focusing on the total lifetime savings, many will find value in lowering their monthly expense. Every dollar that isn’t going toward a utility bill can be used for other things like traveling, hobbies, family or just more financial stability.

Solar Provides Predictability

Although many retirees are not looking for another investment, they may be looking for stability. Utility companies can raise rates, but a solar system can reduce reliance on those increases. In most cases, this can create a more predicable monthly expense and make budgeting easier. By knowing that you’re generating your own power will provide peace of mind and will help you protect your retirement income from future rate increases.

For homeowners that are living on social security, pensions or retired accounts this predictability can be just as valuable as the savings themselves.

What if I Want to Move in The Future?

A common misconception is that solar will only work out if you plan to stay in your home forever, but this isn’t exactly true.

Later down the road if you decide to move, an owned solar system can still be an advance to you. Many homebuyers appreciate lower utility bills and energy efficient features. Solar may also help your home stand out in the buying process. The important thing is to choose a solar solution that will align with your long-term home goals and your retirement plans.

Retirement Doesn’t Mean Missing Out on Solar Savings

Retirement is about having greater control over your time, finances, and future. While solar isn’t the right fit for every homeowner, many retirees are discovering that it can provide lower electricity costs, protection from rising utility rates, and greater financial predictability.

If you’re over 60 and considering solar, age shouldn’t be the deciding factor. What matters most is your energy usage, your financial goals, and how long you plan to stay in your home. For many retirees, solar isn’t just an investment in their home. It’s an investment in a more stable and affordable retirement.

 

Many homeowners install solar based on their energy needs at the time of installation. But things change. 

Perhaps you’ve: 

• Purchased an electric vehicle 
• Added a pool or hot tub 
• Switched from gas to electric appliances 
• Started working from home 
• Experienced utility rate increases 
• Become concerned about power outages 

If your existing solar system isn’t meeting your current goals, you may be wondering whether it makes more sense to add additional solar panels or invest in battery storage. 

The answer depends on what problem you’re trying to solve. 

First Question: Why Are You Considering an Upgrade? 

Before discussing equipment, identify your goal. 

You Want to Offset More Energy Usage 

Signs: 

• Electric bills have increased 
• Household electricity consumption has grown 
• You’ve added major electrical loads 

Potential solution: Additional solar panels 

You Want Backup Power During Outages 

Signs: 

• Frequent power interruptions 
• Desire to keep essential loads running 
• Increased concern about grid reliability 

Potential solution: Battery storage 

You Want Both Savings and Backup 

Signs: 

• Higher bills and outage concerns 
• Long-term energy independence goals 

Potential solution:  Additional solar + battery storage 

When Adding More Solar Panels Makes Sense 

For many homeowners, adding more generation is the simplest solution. 

Common Reasons 

You Use More Electricity Than When You Installed Solar 

Examples: 

• Electric vehicle charging 
• Heat pumps 
• Growing family 
• Home additions 

Your Utility Bill Has Increased 

If consumption has increased beyond what your original system was designed to offset, additional panels may help restore higher energy offset percentages. 

Questions Your Solar Consultant Will Evaluate 

• Is there available roof space? 
• Can your inverter accommodate additional capacity? 
• Has your utility’s net metering policy changed? 

Benefits 

• Greater energy production 
• Increased utility savings 
• Better return on existing solar investment 

When a Battery Makes More Sense 

A battery will store unused solar energy for later use. 

Common Reasons Homeowners Add Batteries 

Backup Power During Outages 

A battery can power critical appliances when the grid goes down, such as: 

• Refrigerators 
• Lights 
• Internet  
• Medical devices 
• Well pumps  

Protection From Time-of-Use Rates 

Some utilities charge higher rates during peak demand periods. We’re seeing this in Ohio.  

A battery can store energy when rates are low, and discharge when rates are high. 

Increased Energy Independence 

Many homeowners simply value having access to their own stored energy rather than relying entirely on the grid. 

Benefits 

• Backup power 
• Greater energy resilience 
• Potential peak-rate savings 
• Better use of solar production 

 

Situations Where Adding a Battery Alone May Not Solve the Problem 

A battery can only store available energy. 

If your solar array is already undersized for your current usage, a battery may simply store too little energy to make a significant difference. 

In these cases, homeowners may need: 

• Additional solar capacity 
• Battery storage 
• Or a combination of both 

Questions to Ask Before Making a Decision 

Before upgrading your system, consider: 

• Has my electricity usage increased? 
• Do I frequently experience outages? 
• Is backup power important to my family? 
• Do I have enough roof space for expansion? 
• What are my long-term energy goals? 
• How has my utility’s net metering policy changed since my original installation? 

 

Next Steps 

There isn’t a one-size-fits-all answer to the question of adding more solar panels or installing a battery. The right solution depends on whether your goal is producing more energy, reducing utility bills, maintaining power during outages, or increasing overall energy independence. 

A formal assessment of your current system, utility usage, and future energy needs can help determine which investment delivers the greatest benefit. 

 

Building a new home is one of the most exciting investments you’ll ever make. For many homeowners, especially those designing a long-term or forever home, it’s also the perfect time to plan for solar energy.  

While there are significant advantages to planning for solar during the design and construction phase, there are also important considerations that homeowners should understand before moving forward.  

Here is a closer look at the benefits, challenges, and information needed to create an effective solar proposal for your new home. 

The Advantages of Planning for Solar During Construction 

Designing your home with solar in mind provides opportunities that simply aren’t available once construction is complete. 

Optimal Roof Orientation 

One of the biggest benefits of planning ahead is the ability to position your roof for maximum solar production. During the design phase, homeowners and builders can work together to ensure the roof faces the most advantageous direction for sunlight exposure. 

Ideal Roof Pitch and Tilt 

Solar panels perform best when installed at specific tilt angles. Building a home from the ground up allows you to select a roof pitch that supports efficient solar energy production while still complementing the home’s architectural style. 

Reduced Shading 

Trees, neighboring structures, and other obstructions can significantly impact solar production. Planning during construction allows homeowners to minimize future shade concerns and maximize available sunlight. 

Fewer Roof Obstructions 

Dormers, plumbing vents, chimneys, and skylights can reduce the usable roof space available for solar panels. During the design process, these features can be strategically located to preserve valuable solar installation areas. 

Coordinated Installation Planning 

When solar is considered early in the project, the builder and solar installer can coordinate conduit pathways and electrical infrastructure before walls and roofing materials are completed. This often creates a cleaner installation and reduces potential future construction costs. 

 

Challenges of Solar Design for New Construction Homes 

Although there are many benefits to planning ahead, new construction projects present several unique challenges that can impact solar system design. 

No Historical Energy Usage Data 

One of the most important factors in designing a solar system is understanding how much electricity a home consumes. Since new homes do not have utility bills or historical consumption records, designers must estimate future energy usage. 

While online calculators can provide projections, they often have limitations, particularly when estimating large energy loads such as heating and cooling systems.  

As a result, projected energy consumption remains an estimate.  

Utility Company Requirements  

The utility company serving the home plays a significant role in solar system design. 

Ohio has different types of utilities, including: 

• Investor-owned utilities 

• Electric cooperatives 

• Municipal and public utilities 

Each has different requirements related to: 

• Interconnection 

• Net metering 

• System sizing limits 

Many utilities allow solar systems to generate between 100% and 120% of a home’s annual electric consumption.  

Designing a system beyond those limits may get you penalized.  

Solar Array Size Depends on Available Roof Space 

The amount of solar that can be installed on a home depends heavily on the available roof area. 

To accurately design a rooftop solar array, our consultants need: 

• Roof dimensions 

• Architectural drawings 

• Roof pitch information 

These details allow us to accurately model the system and provide realistic production estimates. 

Battery Backup Design Considerations 

Battery backup systems require a detailed understanding of the home’s electrical infrastructure. 

Because battery systems are designed around specific electrical loads and breaker configurations, key information often isn’t available until later stages of construction when electrical panels and circuits have been finalized. This can make battery system design more complex during the early planning phases. 

Construction Plans Can Change 

Construction projects rarely proceed exactly as originally designed. 

Changes in: 

• Roof design 

• Building layout 

• Equipment placement 

• Construction schedules 

can all impact the final solar system design. 

Extended construction delays can also affect project timelines and, in some cases, lead to changes in solar project costs if market conditions or equipment pricing shift significantly. 

What We Need to Build an Accurate Solar Proposal 

To provide a preliminary solar design and proposal for a new construction home, several pieces of information are required: 

Roof Information 

Please provide: 

• A top-down view of the roof 

• Locations of dormers, chimneys, plumbing vents, and skylights 

• Roof measurements 

• Roof pitch 

• Roof type (asphalt shingles, standing seam metal, etc.) 

Directional Information 

We also need to know which roof section faces south, as southern exposure provides the strongest solar production in Ohio (and much of the United States). 

Builder Plans 

Architectural drawings and site plans help our design team evaluate available installation space and develop accurate renderings of the proposed solar array. 

Standard Solar System Options for New Construction Homes 

In most situations, solar systems are designed to offset approximately 100% to 120% of a home’s annual electricity usage. For new construction homes, however, many major appliances and electrical loads may not yet be installed at the time the solar system is being designed. 

Because of this uncertainty, many homeowners choose from 3 :standard system size” options.  

Our team can help evaluate your home’s size, anticipated energy demands, and future plans to recommend a solar solution that balances upfront investment with long-term energy production. 

Build for the Future 

If you’re building a new home and considering solar, gathering the right information early in the process will help us create an accurate design and provide recommendations that align with your energy goals for years to come. 

Ready to explore solar for your new construction home? Contact Kokosing Solar to discuss standard system options, pricing, and the information needed to begin designing your future-ready energy system.