Kansas Solar Savings Calculator: 2026 Updated

Kansas Solar Savings Calculator

Calculate Kansas solar costs, 2026 federal tax-credit status, Evergy net metering, plains solar production, payback period, and 25-year savings.

Kansas 2026 rules: No state solar income tax credit. The federal Section 25D credit ended for systems placed in service after December 31, 2025. Evergy offers state-mandated net metering with retail-rate monthly rollover and annual true-up at avoided cost. Cooperatives and municipal utilities set their own terms. No statewide property tax exemption for residential solar.

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Estimates only. Verify utility rates, net metering true-up terms, county tax treatment, and federal tax status with your utility, installer, and tax professional.

What Is the Kansas Solar Savings Calculator?

The Kansas Solar Savings Calculator estimates the upfront cost, payback period, and 25-year net savings of a residential solar installation. It calculates solar electricity production, estimates the value of electricity used at home and exported to the grid, and compares cumulative savings with installation costs after entered incentives.

The calculator separates solar generation into electricity consumed directly by the household and electricity exported to the utility grid. Electricity used at home is valued at the entered retail electricity rate. Exported electricity receives the separate export credit rate you provide.

It also accounts for annual electricity rate increases, a fixed solar production degradation rate, recurring utility solar fees, and entered property tax savings.

The results include gross system cost, net installation cost, payback period, 25-year net savings, first-year solar production, estimated annual household usage, solar offset, and estimated carbon dioxide offset.

These are modeled estimates rather than guaranteed financial returns or actual utility billing calculations.

How the Kansas Solar Savings Calculation Works

The calculator uses several formulas to estimate solar installation expenses and the financial value of electricity generation. It then projects savings for 25 years to determine the first year when cumulative savings recover the calculated net system cost.

1. Calculate Gross Solar Installation Cost

Gross System Cost is calculated from the installed solar capacity in kilowatts (kW) and the entered installation price per watt.

\text{Gross Cost}=\text{System Size (kW)}\times1000\times\text{Cost per Watt}

For example, an 8 kW solar system installed at $3.00 per watt has a gross installation cost of:

8\times1000\times3.00=\$24{,}000

The calculator then subtracts the entered federal credit, Kansas state credit, and upfront rebates to determine net system cost.

N=\max\left(0,G-\frac{GF}{100}-\frac{GS}{100}-R\right)

In this formula, N is net system cost, G is gross installation cost, F is the entered federal credit percentage, S is the entered Kansas state credit percentage, and R represents upfront rebates in dollars.

Both percentage-based credits are calculated separately from the original gross installation cost. The calculator limits the resulting net cost to a minimum of $0.

The federal credit, state credit, and rebate fields all start at zero. The calculator applies entered values mathematically but does not determine whether a particular homeowner qualifies for an incentive.

2. Estimate First-Year Solar Electricity Production

The Kansas calculator uses a fixed first-year production assumption of 1,500 kilowatt-hours (kWh) per kilowatt of installed solar capacity.

\text{Year 1 Production (kWh)}=\text{System Size (kW)}\times1500

For an 8 kW installation:

8\times1500=12{,}000\text{ kWh}

The model assumes solar production decreases by 0.5% every year. This reduction compounds throughout the 25-year projection.

P_y=P_1\times(1-0.005)^{y-1}

Here, P1 represents first-year production, Py is electricity production in year y, and 0.005 represents the annual degradation rate.

The calculator distributes annual production across the months using fixed percentages. January receives 1% of annual generation, while June and July each receive 19%. The complete monthly allocation is 1%, 2%, 4%, 8%, 15%, 19%, 19%, 15%, 8%, 4%, 2%, and 3%, from January through December.

These monthly percentages affect how much generated electricity the calculator counts as household self-use or grid exports.

3. Estimate Annual Household Electricity Consumption

The calculator estimates annual electricity usage from the entered monthly electricity bill and retail electricity rate.

\text{Annual Usage (kWh)}=\frac{\text{Monthly Electric Bill}\times12}{\text{Electricity Rate per kWh}}

With the default monthly electric bill of $115 and electricity rate of $0.145 per kWh:

\frac{115\times12}{0.145}\approx9{,}517\text{ kWh}

The model therefore estimates annual household consumption of approximately 9,517 kWh.

This calculation assumes the entered electricity bill can be converted into energy consumption using one rate. Actual bills may include fixed charges and other costs. An electricity rate greater than zero is necessary for a meaningful estimate because the formula divides by that rate.

4. Calculate Solar Self-Consumption and Exports

The calculator separates monthly solar generation into electricity used directly in the home and electricity exported to the grid.

Self-used electricity is determined by the entered Daytime Self-Consumption percentage. However, the modeled amount cannot exceed estimated monthly household consumption.

U_m=\min\left(P_m\times\frac{s}{100},\frac{A}{12}\right)

E_m=\max(0,P_m-U_m)

Um represents monthly self-used electricity, Pm is monthly solar production, s is the entered self-consumption percentage, A is estimated annual household usage, and Em is electricity exported during the month.

The calculator values solar electricity consumed directly by the household at the entered retail electricity rate. Electricity exported to the grid is valued at the separate export credit rate.

\text{Monthly Energy Value}=(U_m\times r)+(E_m\times e)

Here, r represents the applicable retail electricity rate and e represents the applicable export credit rate.

The calculator increases both rates each year using the entered Annual Utility Rate Increase percentage. Solar production decreases annually according to the fixed 0.5% degradation assumption.

For each year, the model adds the value of all 12 months of electricity, subtracts entered annual utility solar fees, and adds entered annual property tax savings.

S_y=\sum_{m=1}^{12}(U_{y,m}r_y+E_{y,m}e_y)-F_a+T

Sy represents savings in year y, Fa is annual utility solar fees, and T is entered annual property tax savings. The annual fee and property tax savings amounts remain constant during the 25-year model.

5. Calculate Solar Payback and 25-Year Net Savings

The calculator adds each year’s savings to a running total. The payback period is the first modeled year when cumulative savings equal or exceed the net installation cost.

The main long-term financial result is calculated using:

\text{25-Year Net Savings}=\sum_{y=1}^{25}S_y-N

This formula adds 25 years of estimated savings and subtracts net installation cost.

If net cost is zero, the calculator displays Immediate as the payback period. If cumulative savings do not recover net cost during the modeled period, it displays 25+ Years. Otherwise, it shows the first break-even year as a whole number.

Worked Example: An 8 kW Solar System in Kansas

Consider a hypothetical Kansas solar installation using the calculator’s default inputs.

Input	Example Value
Monthly Electric Bill	$115
Electricity Rate	$0.145/kWh
System Size	8 kW
Installed Cost per Watt	$3.00
Export Credit	$0.145/kWh
Daytime Self-Consumption	30%
Annual Utility Rate Increase	3%
Annual Utility Solar Fees	$0
Direct Federal Credit	0%
Kansas State Credit	0%
Upfront Rebates	$0
Property Tax Savings	$0/year

The gross installation cost is $24,000. Since the entered credits and rebates are zero, net system cost also equals $24,000.

The system produces 12,000 kWh during its first modeled year, compared with estimated annual household consumption of approximately 9,517 kWh.

Under the 30% daytime self-consumption assumption, the model allocates 3,600 kWh to household self-use and 8,400 kWh to grid exports during year one.

Because the retail electricity rate and export credit both equal $0.145/kWh, first-year electricity value is:

(3600\times0.145)+(8400\times0.145)=\$1{,}740

With no annual utility solar fees or property tax savings entered, actual modeled first-year savings are $1,740.

After applying the 3% annual rate increase and 0.5% annual production degradation for 25 years, the calculation produces these estimates:

Calculated Result	Estimated Value
Gross System Cost	$24,000
Net System Cost	$24,000
Year 1 Production	12,000 kWh
Estimated Annual Household Usage	9,517 kWh
Solar Offset	126%
Calculated First-Year Savings	$1,740
Payback Period	13 Years
25-Year Cumulative Savings Before System Cost	$59,319
25-Year Net Savings	$35,319
25-Year CO2 Offset	127.2 tons

Cumulative modeled savings reach approximately $23,984 by the end of year 12, just below the $24,000 net installation cost. By the end of year 13, they reach approximately $26,320. The calculated payback period is therefore 13 years.

Over 25 years, cumulative modeled savings total approximately $59,319. Subtracting the $24,000 net installation cost gives estimated net savings of $35,319.

These values demonstrate the calculator’s formulas and default assumptions. They are not guaranteed savings for a particular Kansas home.

How to Use the Kansas Solar Savings Calculator

Enter your electricity information, solar installation details, and financial assumptions to calculate potential costs and long-term savings.

Enter Monthly Electric Bill ($). Provide your monthly electricity bill amount. The default is $115.
Enter Electricity Rate ($/kWh). Add your retail electricity rate. The calculator starts at $0.145 per kWh.
Enter System Size (kW). Provide the planned solar installation capacity. The default is 8 kW.
Enter Installed Cost per Watt ($). Add the estimated installation price per watt. The default is $3.00.
Select your Utility. Choose Evergy Kansas City, Evergy Kansas, Electric Cooperative, or Municipal Utility. The selection does not automatically change the numerical calculation.
Enter Export Credit ($/kWh). Provide the credit rate for electricity exported to the grid. The default is $0.145/kWh.
Set Daytime Self-Consumption (%). Enter the percentage of solar generation assumed to be used directly in the home. The default is 30%, and the input range is 0% to 100%.
Enter Annual Utility Rate Increase (%). Set the assumed yearly increase in retail and export electricity rates. The default is 3%, with an input range of 0% to 50%.
Enter Annual Utility Solar Fees ($). Include recurring annual solar fees in the estimate. The default is $0.
Review the battery checkbox. The form includes Battery storage or high daytime self-use. Checking this box does not independently change the calculation. Adjust the self-consumption percentage to explore a different assumption.
Review Incentives. Enter Direct Federal Credit (%), Kansas State Credit (%), Upfront Rebates ($), and Property Tax Savings ($/yr), where appropriate. All four fields default to zero.
Click Calculate Savings. Review the installation cost breakdown, payback period, 25-year net savings, solar production, annual usage, solar offset, and estimated CO2 offset. Use Reset to restore the starting values and hide previous results.

For a more useful estimate, enter values from your electricity bill and an actual solar installation quote. Check your export credit rate, recurring utility fees, and any financial incentives before relying on the projected savings.

Important Assumptions Behind Your Kansas Solar Savings Estimate

Net Metering and Export Credits

Net metering is a utility billing arrangement that gives customers credit for eligible solar electricity exported to the grid.

The Kansas calculator includes informational notes about Evergy net metering, monthly credit rollover, and annual true-up arrangements. It also distinguishes electric cooperatives and municipal utilities in its utility selector.

However, the implemented calculation uses a simpler method. It multiplies exported solar electricity by the single export credit rate you enter. It does not separately calculate monthly credit balances, rollover amounts, annual true-up payments, or utility-specific billing rules.

Selecting Evergy Kansas City, Evergy Kansas, Electric Cooperative, or Municipal Utility does not automatically change electricity rates, export credits, or annual fees.

Because utility arrangements can differ, use an export credit rate that reflects the assumptions you want to evaluate rather than treating the default as a confirmed tariff.

Federal Credits, State Credits, and Rebates

The calculator includes separate fields for federal and Kansas state credit percentages. Both default to 0%, as does the Upfront Rebates field.

Its accompanying 2026 information describes federal solar tax credit status and Kansas state tax assumptions. These statements are part of the supplied calculator content, not an automatic legal or tax eligibility check.

If you enter a percentage-based credit, the model calculates it from gross installation cost. If you enter an upfront rebate, that dollar amount is also deducted from gross cost.

The calculator does not independently determine whether any credit or rebate applies to your installation. Confirm the applicable rules and program terms separately before including a benefit in your financial planning.

Property Tax Savings

The Property Tax Savings ($/yr) field allows you to include an assumed annual dollar benefit.

The calculator starts with $0, and it does not calculate property tax savings from a home’s assessed value or local tax rates. Instead, any amount you enter is added directly to every modeled year’s savings.

For example, entering $100 per year would increase cumulative modeled savings by $2,500 over 25 years, provided other assumptions remain unchanged.

The calculator’s informational text discusses Kansas property tax treatment, but an entered annual amount is still an assumption rather than a verified tax benefit.

How to Interpret Payback and Net Savings

Payback Period shows the first whole modeled year when cumulative savings recover the net installation cost. A progress bar compares the estimated payback period with the 25-year calculation horizon.

25-Year Net Savings shows the accumulated financial value remaining after subtracting net installation cost. A positive amount means modeled savings exceed the upfront net cost. A negative amount means the model does not recover the full cost over 25 years.

The calculation does not separately include loan interest, financing expenses, maintenance costs, inverter replacements, battery costs, or discounting future savings to present value. Actual financial results may therefore differ from the estimate.

Solar Offset and Environmental Impact

Solar Offset compares estimated first-year solar electricity production with estimated annual household electricity use.

\text{Solar Offset (\%)}=\frac{\text{Year 1 Production (kWh)}}{\text{Annual Usage (kWh)}}\times100

The result is rounded to a whole percentage. Under the default inputs, 12,000 kWh of first-year production divided by approximately 9,517 kWh of annual household usage gives a 126% solar offset.

Solar offset can exceed 100% because it compares annual generation with annual consumption. A result above 100% does not necessarily mean the entire electricity bill disappears. Electricity consumed at home and electricity exported to the grid can have different financial values.

The calculator also estimates a 25-Year CO2 Offset using cumulative solar generation and a fixed conversion factor of 0.45 tons per 1,000 kWh.

\text{25-Year CO2 Offset (tons)}=\frac{\text{Total 25-Year Production (kWh)}}{1000}\times0.45

This result is displayed to one decimal place. It is a simplified environmental estimate, not a measurement of actual avoided emissions from the local power grid.

Important Result Display Details

Some labels in the current calculator do not match the underlying values. The rows labeled Year 1 Self-Use kWh and Year 1 Export kWh display electricity quantities from the final modeled year, year 25, instead of year 1.

Under the default inputs, actual modeled first-year self-use is 3,600 kWh and first-year exports are 8,400 kWh. However, the two displayed rows show approximately 3,192 kWh and 7,448 kWh, respectively. Those are the calculated year-25 quantities.

The row labeled Net Year 1 Savings also does not represent actual first-year savings. It displays the positive portion of calculated 25-year net savings, or $0 when that amount is negative.

Under the default assumptions, this row therefore shows $35,319 instead of the actual modeled first-year savings of $1,740.

The separately labeled Payback Period and 25-Year Net Savings outputs reflect their stated calculations. Dollar values are displayed as whole U.S. dollars, energy quantities and solar offset appear as whole numbers, and CO2 offset is shown to one decimal place.

Frequently Asked Questions

How much money can solar panels save in Kansas?

Potential savings depend on installation costs, electricity prices, solar production, export credits, and financial incentives. The Kansas Solar Savings Calculator estimates savings over 25 years and subtracts net installation cost. Using figures from your electricity bill and solar installation quote produces a more relevant estimate than relying only on the calculator’s default assumptions.

How long does solar payback take in Kansas?

Solar payback depends on the net installation cost and accumulated annual savings. The calculator reports the first year when cumulative modeled savings equal or exceed that cost. Under its default inputs, the estimated payback period is 13 years. If a different scenario does not recover its cost within 25 years, the result is 25+ Years.

Does the calculator automatically apply Evergy net metering rules?

No. The calculator includes Evergy Kansas City and Evergy Kansas as utility options, but those selections do not change the calculations. It values exported electricity using the entered Export Credit ($/kWh) rate. The model does not independently calculate monthly credit rollover, annual true-up settlements, or utility-specific billing schedules.

Does the Kansas solar calculator include tax credits and rebates?

Yes. It includes fields for direct federal credit and Kansas state credit percentages, upfront rebates, and annual property tax savings. Percentage credits and rebates reduce calculated net installation cost. Entered property tax savings increase each year’s modeled savings. The calculator does not automatically determine eligibility or verify whether these benefits are available.

Does the calculator account for increasing electricity rates?

Yes. The calculator increases both the retail electricity rate and export credit rate annually using the entered Annual Utility Rate Increase percentage. The default is 3% per year. This growth rate is a modeling assumption, not a prediction of future electricity prices or utility export credit policies.

Does battery storage automatically increase estimated solar savings?

No. The form contains a Battery storage or high daytime self-use checkbox, but selecting it does not change the mathematical calculation. You can manually adjust the Daytime Self-Consumption percentage to explore a different assumption. The model does not separately calculate battery purchase prices, storage capacity, efficiency losses, or replacement expenses.

Can the calculator show negative 25-year solar savings?

Yes. The 25-Year Net Savings result can be negative if cumulative modeled savings are lower than net installation cost. Higher installation costs, lower electricity values, or increased annual utility fees can contribute to this result. A negative figure describes the entered scenario rather than guaranteeing an actual financial loss.

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Kansas Solar Savings Calculator