Benefits of solar power in homes
Benefits of Solar energy in homes
Solar power systems are an excellent option for homeowners who wish to reduce their electricity bills and decrease carbon footprints. It can also result in greater home value. These advantages come with significant cost of maintenance and installation. The amount of gains will differ from one home to the next.
This article will help homeowners in making the financial calculations needed to determine whether solar energy is feasible for their house.
Understanding Solar Power System
It is straightforward to decide whether you install solar panels and it make financial sense in your residence. Calculate:
- Cost of the solar power plant
- It will generate a great deal of energy
- You would be paying more for the same amount of energy.
- How do you expect your initial expenditure in savings on energy to be paid off?
- What is the time frame for the system to pay its debts within five years?
If it is and you’ve got the money upfront then it’s probably a great idea. You should carefully consider whether you’ll have to save more or borrow money to pay for the system.
But, in reality, things aren’t always so simple. The factors that affect your solar panel can be very different and cause the advantages and costs that solar panel systems bring to two homes to differ dramatically.
There are tools that can help. The LA Solar Group provides an online calculator that provides the cost of a representative project once you install solar power plants across every region of the U.S. This calculator is a great starting point when you’re just beginning to learn about solar energy or are looking to gain a better understanding of the cost-based model.
We’ll walk you through the most important aspects to take into consideration when formulating the potential savings and cost of solar power for your home in the remainder part of the article.
Solar Power Costs for Homeowners
Let’s first look at the upfront cost of installing solar panel systems to your house. A solar panel system for homes costs between $3,500 to $16,000 upfront.
The variety of prices is why? The reason for this is that the cost of a system will vary depending on its size and the kind of panels it is using. No matter what system you choose, installing solar panels can be expensive. The main expense of owning an array is the initial cost of purchasing the equipment. The major component of total price is your solar system.
There could be additional costs. An inverter to convert power source from the panel to alternating electric power utilized by home appliances, process used to determine (if necessary to measure the amount of power that was produced) the various components of the housing, cables, or wiring equipment are needed for installation. Many homeowners are also considering the possibility of storing batteries. Battery storage has historically been costly and not needed if solar power generation is paid for by utilities. It is also crucial to think about the cost of labor for installing batteries.
There are other costs with maintaining and operating the PV array. Batteries and inverters, if they exist, need to be replaced every few years.
Subsidies
While the aforementioned costs are fairly straightforward–a solar solar company can typically provide a cost for these for a householder local or government electric assistance can be more difficult. While solar incentives for installation vary often and are not always clear, the US government has approved solar tax credits that can amount at 30% off the price to install the solar system.
The Database of State Incentives for Renewables & Efficiency website provides more details about incentive programs in the U.S., including programs within individual states. Similar information is available on websites of solar advocacy or government in other countries. Visit your local utility provider to find out whether they provide incentives to solar installations and also what their policy is regarding grid interconnection as well as selling power surplus into the grid.
Calculating Your Energy Production
In your calculations another factor to be considered is how much power your system produces. For even the most knowledgeable it can be a complicated calculation. Let’s look at the fundamentals.
The levels of solar radiation in your house are an important consideration. This simply means how much sunlight you have. While it is recommended to install solar panels closer to the east-west axis, there are other things to think about. It is worth mentioning the National Renewable Energy Laboratory (NREL), which produces maps across areas in the U.S. that show solar radiation levels and their website offers detailed information about specific areas in the U.S.
The orientation of your home is also important. A south-facing roof with no trees or other obstructions in sunlight can maximize the amount of solar energy. The panels can also be erected on support structures outside of the house and then tucked away from the house. This can incur additional charges for cables and equipment.
The size of your solar panel is also vital. The theoretical power output of a solar panel is expressed in watts. It is believed that the typical power output for installed solar PV panels, which is also known as the capacity factor, is between 15% and 30%.6 A household with a 3 kWh household system operating at a 15% capacity factor will produce around 3 kWh, which is 15 times 24 hours/day = 3,942kWh/year. This is about one-third of the average consumption of electricity across the U.S.
How much will you save?
You can estimate the amount of savings on energy each year by knowing upfront the price the solar power plant will cost as well as the amount of energy it can produce.
This is a difficult figure since everything is dependent on how much you pay for electricity. Residential users pay a set cost for energy regardless of when it is utilized. Solar energy systems are used to offset the electric cost that homeowners pay, rather than compensating for the high cost of electricity generated at peak hours. This is more than the typical price of electricity production.
Many U.S. utility companies have implemented pricing systems that allow homeowners to pay various rates throughout the day, to reflect the cost of electricity production. This is why there are higher rates for the afternoon and lower rates during the night. A region with this kind of variable rate may be able to benefit from installing an array of solar panels that are PV. Solar power could offset the most expensive electric power.
This will depend on the frequency of rate changes under the plan and the timing of them. Similar pricing schemes are used by utilities in particular locations. These rates can vary according to seasonal variations in demand. Solar power is more expensive if it has higher rates in summer.
These plans can be employed for certain utilities in order to modify the marginal price of electricity when consumption rises. This plan allows the benefits of a solar system to be based on the amount of energy is consumed. In certain regions, prices are soaring as consumers consume more. Large houses with high energy requirements may be most likely to require solar arrays that offset marginal costs of consumption.
It is possible for certain homes to sell solar power back into the grid to save cash. This is called net metering in the United States. Residential consumers utilize the power they generate by solar panels to offset their power usage elsewhere. Electric bills for the month are an indicator of their energy consumption. There are different guidelines and policies regarding net metering that are applicable to each region. For more details, homeowners can go to the DSIRE database. It is also recommended to contact the local utility.
Calculating Solar Power Costs
It is now possible to calculate the final value and evaluate the value of solar power for you.
You can use discount cash flow (DCF), to evaluate the overall costs and benefits of a solar system. The outflows at the start of the project will be the initial installation cost, without subsidies. The inflows will come later, in the form of offset electricity costs (both direct and via net meters).
Instead of making use of DCF the viability of solar power is often assessed by calculating its price of electric power (LCOE) and comparing that to the electricity price paid by the local utility. The cost/kilowatt hour (or C//kWh) will be calculated to determine the cost of LCOE of household solar. This is the exact structure that electricity bill bills use. The following equation can serve as an approximate of the LCOE:
LCOE ($/kWh) equals Net Present Value (NPV) of the Lifetime Cost of Owning ($)/Lifetime energy output ($kWh).
The useful life span is typically 25 to 40 years.7 In order to calculate the NPV, it must also take into account maintenance costs. The LCOE can be measured against the price of electricity provided by the utility. Be aware that the price of electricity is the one that happens during peak PV solar production.
Is Solar Power Worth It?
Once you’ve completed all of these calculations after which you’ll likely have one figure that is the length of time it takes for solar panels to pay back your energy costs. It is possible to identify a system that can achieve this goal within the span of five to ten years, if you live in a sunny area of the country with large energy bills. Some may have to wait between 10 and 20 years before reaching the point.
The reality is that homeowners will be able to see the benefits of solar power systems in the future. It might take years to see the benefits. It’s usually a matter of the necessity to invest in a system of this kind. These factors include the length of time you’ll remain at home, what subsidies are available, and whether you’re concerned about the environment.
The pros and cons of solar panels for your home
Solar power, as with all things is not without its benefits and drawbacks. But, you might find it possible that some economic cost can be offset with the environmental benefits and a lower carbon footprint. This could be more significant than an evaluation purely based on financials.
Solar Energy Pros
- You can reduce your carbon footprint with green energy sources
- You can sell the excess energy you’ve generated using net meters
- Certain federal tax credit breaks could be available to you
Solar Energy Cons
- The cost of maintenance and installation is extremely high.
- Solar is only effective when there is sunlight
- Every few years, the components of the system must be replaced
- Some tax breaks could have been canceled or are set to expire
Can a house be powered by solar power on its own?
It’s not often possible. Solar is only effective when there is sunlight. If it’s dark or cloudy, solar doesn’t produce electricity. While there are battery options that can provide power at these times, they can be very expensive. Grid power is still being used by the majority of homes with solar panels.
Are Solar Panels actually worth the cost?
It is possible for the system to repay its expenses over time, depending on where you live. Since you don’t have to pay the same amount for electric power from your utility company This is a possibility. There could be a decrease in your monthly bill when net metering is activated.
What is the Cost of the Solar Panel?
The prices have fallen steadily over the decades. The power output of your array will determine your total cost. Consumer reports indicate that the cost of a solar panel for an average-sized home within the U.S. ranges between $11,000 to $15,000.8
What is the estimated time for recouping the initial cost?
It can take from 10 to 20 year to make a solar panel pay for itself depending on the size and location of your residence.
