Solar Calculator
Solar calculator provides lot of information for homeowners to initially evaluate before planning a rooftop solar system.
For more detailed evaluation or for design, SolarsNet recommends contacting companies certified with the Solar Professionals quality mark.
Cantonal incentive programs for solar installations may be subject to change. In any case, the Cantonal Energy Office is available for advice.
How Does Solar Calculator Work?
In four steps, our solar calculator uses your information to determine the optimal solar system for you – with which you will not only reduce your electricity costs, but also make an important contribution to the energy transition.
Based on personal information, we determine the optimal solar system via 3D calculation, calculate the profitability of the system and send you a detailed indicative offer.
What Information Does Solar Calculator Need?
In order for us to determine right solar system for you, Solar Calculator needs the following basic information:
- location of your home
- roof size (custom determination possible)
- Condition of the roof (tile roof, slate, metal roof, etc.)
- Existing model of the fuse box
- number of people in the home
Solar Calculation of Your Solar System
We do not expect you to know the exact size and angle of your roof. The relevant information is determined automatically based on your residential details.
Solar Calculation of a Solar System: This is how it Works?
- By entering your address, solar calculator automatically determines the orientation of your roof, the sun’s impact on the existing areas and the optimal roof area for the potential solar system. This way you can calculate your solar system yourself.
- The best roof area is preselected based on size and efficiency. The selection can be corrected or adjusted by the user accordingly.
- Based on further information on consumption, the optimal size for solar system is selected.
What Exactly Does Solar Calculator Calculate?

SolarsNet solar calculator calculates based on your individual information:
- The optimal solar system for your consumption in your home
- A specific price for your solar system
- Offer for assembly and yield
- Individual calculation of funding and tax relief
- The corresponding amortization period

Solar Calculator: Solar Potential and Costs at a Glance
With just a few clicks you can get an initial overview of your future solar system – online and free of charge.
Energy Production Total Costs and Payback Period
To determine approximate energy production, total cost and payback period, many factors must be considered such as geographic location, roof orientation and slope, local electricity rates, initial cost, federal subsidies, etc.
This can be quite complicated and time consuming without expert knowledge. Our solar calculator also incorporates your individual energy consumption and current heating system into calculation.
Neutral and Data-driven Evaluation
Our online solar calculator requires only few data points to provide you with an initial, data-driven, neutral assessment of your future solar system. The analysis is also free and without obligation and does not require the exchange of personal information such as your phone number.

Sun Exposure
Solar radiation is the determining factor of suitability. Radiation is influenced by geographic location, orientation, slope and superstructure.
Roof Surface Area
Purchase costs per square meter decrease with increasing size, which is why larger systems are often more profitable. However, it is usually not always possible to use the entire roof surface for solar systems, due to chimneys, skylights, etc. Our solar calculator takes into account such restrictions on the plausible area of use.
Solar Calculator: Roof Compatibility with Solar Panels
Based on the location, our solar calculator can estimate whether one or more roof areas on your property are suitable for system. Suitability is primarily determined by solar radiation, roof orientation, pitch, shade and roof size.
Orientation
The ideal roof orientation for energy production for solar system is south. However, deviation from southeast to southwest reduces the energy yield much less than long assumed. In addition, the best way to amortize solar system is through high self-consumption.
This is why solar systems on southeast or southwest-facing roofs often make sense. You can check the roof orientation with our solar calculator.
Inclination
A roof pitch of 30 to 35 degrees is optimal for the performance of solar system. If the roof pitch deviates from these guide values, the orientation is decisive. If the roof is oriented directly to the south, the roof pitch has only minor influence on the energy yield – estimated in single-digit percentage. Further roof orientation deviates from the south, the greater the energy losses, if the roof pitch is also not optimal. We have taken these combined factors into account in our solar calculator.
Shadow
Shading of individual modules in solar system can lead to significant losses in energy production. The first reason is that less light leads to less energy. The second and much more important reason is that solar modules are connected in series: If one module in the series performs poorly due to shading, this negatively affects the energy production of the entire series.

Calculate Profitability of Solar System using our Solar Calculator. A Solar System: Is it Worth It?
Combined solar systems with high level of self-consumption often pay for themselves after 15 to 20 years. Our solar calculator analyses the profitability of solar system. If the roof is basically suitable for solar system, the question often arises: is the investment worthwhile? From purely ecological point of view, the answer to this question is always yes. From an economic point of view, the decisive factors are in particular the costs (acquisition costs, operating costs), subsidies, local electricity prices, the local feed-in tariff, self-consumption and the proportion of total energy consumption that is accounted for by the solar electricity produced. Our solar calculator calculates the payback period and determines neutrally whether the investment is worthwhile.

Cost of Solar System: Acquisition Costs, Operating Costs and Subsidies
A typical solar power system for an average single-family home in Pakistan costs around PKR 200,000 depending on contributions and tax savings.
Acquisition Costs
A solar power system is an investment that is typically calculated and seen to pay for itself over 30-year period. The increasing volume of solar systems produced continues to drive down prices.
An average family home in Pakistan has an annual electricity consumption of approximately 4,500 kilowatt hours (kWh). For single-family home, a solar power system with power output of approximately 8 kilowatt peak (kWp) could be installed. For each kWp, an annual power output of approximately 900 kWh is calculated. In this example, an annual electricity production of 7,200 kWh per year would be achieved.
The costs - before subsidies and tax benefits - of such solar system in Pakistan amount to around 200,000 PKR. Solar units are subsidized by the state, with one-time purchase fee of around 40,000 PKR in this example. With additional tax savings, the reductions add up to around 50,000 PKR. The net investment cost in this example is therefore less than 150,000 PKR.
Based on little data, our calculator shows first estimate of costs of solar system.
Operating Costs of Solar System
Operating costs for maintenance and insurance amount to around 1% of the purchase price. This is the case, for example, if the inverter is damaged.
Maintenance
Solar Systems
Cleaning
There are differing opinions about whether and how often to clean solar modules. Low contamination does not significantly affect the energy production of the solar system. Solar panels on the roof are also cleaned with precipitate. Especially small solar systems for self-consumption generally do not require cleaning, which does not involve any costs.
Insurance
No additional insurance is required for solar system. Any damage to the system (natural damage and fire) is covered by the compulsory building insurance. After assembly and commissioning of the system, you only need to inform the responsible insurance company. This increases the premium for building insurance by few francs per year.
They are expected to incur annual operating costs of approximately 1% of the purchase cost.
Subsidies for Solar System
Solar systems are heavily subsidized by the Federal Council. Around a third of the investment costs are reimbursed in the form of a small one-off feed-in remuneration (FiR), which is paid once and only for solar systems up to 100 kWp. The amount of FiR varies depending on the performance of solar system and the individual amounts are taken into account in our calculator.
In addition, however, funding is only distributed after system has been put into operation. In addition to the small one-off remuneration, there is also large one-off remuneration (LOR). However, this only applies to systems from 100 kWp and is therefore of no relevance for private homeowners.
In addition to subsidies, property owners also benefit from tax breaks. In almost all cantons, the investment costs of solar system are tax deductible.
All financial grants are included in our calculation, so you can see directly how much money you receive from the federation, saving you money. Private individuals mostly benefit from the small one-off remuneration and tax advantages.
Buyback Rates
You can sell electricity you do not consume to your supplier and feed it into grid. For every kilowatt hour, your local energy supplier pays feed-in tariff. Local feed-in tariffs vary greatly from region to region. The different tariffs are due to the individual suppliers per region who set the prices.
However, as private individual, you cannot select supplier to whom you want to sell your electricity, as this is linked to your place of residence. These tariffs can have significant impact on the profitability of your solar system. In our calculator you can see feed-in tariffs in your region.
Electricity prices in your community are crucial to calculating your payback, and our solar calculator shows you.

Buyback Rates
Higher share of self-generated electricity in your total consumption, more money you save. The reason for this is that your own solar electricity is cheaper than electricity from grid.
Self-Consumption with SolarsNet Calculator
Higher demand and share of solar energy produced in relation to total energy consumption, faster efficiency of solar system will be.
Self-consumption
In addition to costs of solar system and subsidies, self-consumption of electricity produced plays an important role in calculating profitability of your system. Self-consumption means that electricity produced by your solar generation system is consumed by you and does not return to electricity grid.
Annual Energy Demand
In our solar calculator, you can record your annual energy needs, and based on this we propose suitable solar system. Self-consumption is included in calculation.
Simulate Self-consumption
Finally, you can also simulate the change that your personal consumption could have and how to increase it with heat pump heating, solar-optimized boiler, battery or charging station for an electric car.
Benefits of Your Own Solar Power System: Sustainable, Economical and Independent
Grants and Tax Deductions
Pakistan government supports purchase of solar systems with subsidies of around 20%. Investment costs can also be deducted from taxes in most cantons.
Independent Electricity Production
With your own solar systems you become self-sufficient and less affected by rising electricity prices..
Higher Property Value
The value of the house is significantly increased by solar system on roof.

Become Electricity Entrepreneur
Revenue is generated by feeding solar energy into the grid. Initial investments in solar system are typically discounted over life of system.
Green and Sustainable Energy
Climate-friendly electricity is produced and an important contribution is made to more liveable environment.
Lower Electricity Costs
Solar power from your own roof is less expensive than electricity from the public grid and can sustainably reduce electricity costs by 30%.

Online Solar Calculator: Helps with Make Decision
Our digital Solar Calculator combines different databases, so you can get an all-in-one result. Based on your location, we calculate solar system of the house.
Data you enter is sufficient to provide you with first estimate of annual electricity production and consumption as well as costs. This enables you to assess whether solar system is sensible investment for you and your needs.
SolarsNet This is What We Stand For
Neutrality
We are a young and independent SolarsNet Company, Solar Technology by industries and homeowners. We develop all our tools ourselves and the results are based on Open Data.
Data Security
Data security is our top priority. Your data will never be passed on to third parties without authorization. You as a user always decide when to share what and with whom.
Certified Experts
We exclusively work with selected and certified regional Swiss real estate experts and craftsmen in order to meet your quality requirements.