Calculate Commercial Solar in Ireland

Solar Panel Calculator

Wondering how many solar panels you need or how much you could save? Use our guide to calculate solar panel needs and estimate your energy requirements. Looking for precise results? Contact us for a tailored assessment!

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Calculate Solar Electricity

How to Estimate Your Solar Needs

Calculating Your Solar Panel Requirements: A Simple Guide

While our solar panel calculator offers a helpful starting point, understanding your solar energy needs involves considering several factors. Here’s how to estimate your requirements:

1. Assess Your Energy Usage

Review your electricity bills to determine your average monthly and annual energy consumption in kilowatt-hours (kWh). This step is key to estimating the amount of solar energy your system will need to produce.

2. Determine Your Roof Size and Orientation

Measure the usable area of your roof. Tools like Google Maps can help, or you can measure ground-level distances between roof edges. South-facing roofs are ideal for maximum solar exposure in Ireland

3. Estimate the Number of Panels

Solar panels typically range between 300 and 400 watts per panel. Divide your monthly energy usage by the wattage of a single panel to estimate how many you’ll need. Keep in mind that factors like shading, roof pitch, and orientation influence efficiency.

4. Calculate Potential Savings

Consider electricity costs and how much you might save by generating your own power. A well-planned system can significantly reduce your energy bills by covering a large portion of your consumption.

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Key Factors Influencing Solar Energy Production

What Affects Your Solar Panel Output?

Several factors impact how much energy your solar panels can generate:

  • Roof Orientation and Angle: South-facing roofs with a tilt of 30° are optimal in Ireland. Other directions will still generate power but with reduced efficiency.

  • Shading: Shadows from trees, chimneys, or nearby buildings can limit output. Choose a location with minimal shading for your panels.

  • Weather Conditions: Even with Ireland’s cloudy weather, solar panels can generate electricity. Indirect sunlight still contributes to energy production, though output may fluctuate.

How to calculate solar electricity
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Choose Solar Path for Your Solar Assessment?

Ready for Accurate Solar Calculations?

Our guide provides a solid foundation, but every home is unique. For precise calculations and a customised solar plan, we offer:

  • Expert Evaluation: A comprehensive assessment tailored to your home’s roof size, shading, and energy requirements.

  • Maximise Efficiency: Recommendations on the best panel types and placements to optimise performance based on your solar PV calculator results.

  • Unlock Grants and Incentives: As an SEAI-registered installer, we’ll guide you through the grant process, helping you secure maximum support.

Get in touch with Solar Path today to schedule your free consultation and receive an accurate solar panel requirement calculator estimate!

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SolarPath Testimonials

What our customers say about us

Experiencing the Solar Path difference - where quality meets reliability, as told by our valued customers.

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Javier

6 Sept 2024

"SolarPath answered all my questions and advice during the process based on my requirements to get a customized solution which allows me working from home reducing my bills and provides fault tolerance in case of power outage."
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Graham

11 June 2024

"Install was very professional and neat. Very easy to deal with, nothing seemed like an issue to them, even though our roof slates are very difficult to work with (break very easily). The lads also fixed slates in areas of our roof away from the PV install."
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Charlie Haly

13 June 2024

"This is a new adventure for us. The lads fitting the system are very professional and obviously excellent at their jobs. Would highly recommend them. All our questions are answered immediately, Ken has a great team working with him. Well done all."
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Jason Keyter

9 April 2024

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"Would not hesitate to recommend Solar Path, they walked me through each step of the way and then some, their quality of workmanship is fantastic, and the installation team were efficient and friendly."
Chris Bowes client icon

Chris Bowes

4 July 2024

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"My husband and i were delighted with our solar installation from start to finish. The lads were fantastic. Great work ethic and very professional at all times while on site.They kept both of us involved every step of the way."
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Robert Cantwell

14 August 2024

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"Solar Path is the only company you should be trusting with your investment in Solar PV and green energy. Solar Path was by far the most honest, accurate, and professional in terms of the online solar design and the onsite physical assessment."

Alex Hyland

23 Apr 2024

"Solarpath installed my panels some six months ago. All was done in one day without fuss os mess. They put an app on my phone so I can easily monitor my production of free, green power. A great company to deal with. Highly recommended."

Mary Delaforce

23 Apr 2024

"My whole experience with solar path was very professional and efficient. The team were really helpful and no job was too much for them. They left the house tidy and had the job done in 2 days. I had 16 panels installed and I’m very happy with the system so far."

Daphne

29 Apr 2024

"Really professional service and very efficient supply. Am delighted with the battery and panels that they fitted and the advice on which system would suit our needs best"

Jason Keyter

21 May 2024

"I recently had the pleasure of working with Solar Path for the installation of a solar panel system, complete with an inverter and battery, and I couldn't be more satisfied with the experience. From start to finish, the entire process was smooth and efficient..."

Learn more about Solar

Frequently asked questions

More questions? Feel free to contact us

1. How do I calculate how many solar panels I need?

To calculate the number of solar panels required, divide your total energy consumption (in kWh) by the output of a single solar panel (typically 440–455 watts). Tools like a solar panel calculator can factor in efficiency based on roof orientation, shading, and local weather conditions.

2. How much solar energy do I need to run a fridge?

On average, running a fridge requires 1 - 2 solar panels, depending on the fridge's energy efficiency and daily usage. Be sure to calculate the total kWh used per day and match it with the panels' output.

3. How many solar panels are needed to produce 50 kWh per day?

Generating 50 kWh daily typically requires 20 + panels, depending on panel efficiency and local sunlight conditions. This calculation assumes each panel produces around 2.5 kWh per day in optimal conditions.

4. What is the lifespan of a solar panel?

Most solar panels have a lifespan of 25–30 years with consistent performance. Over time, their efficiency gradually decreases, but they still produce significant energy, which can be tracked using a residential solar power calculator.

5. How much electricity does a 4kW solar system produce?

A 4kW system can produce approximately 3,400–4,500 kWh annually in Ireland, depending on location, orientation, and weather conditions. This is sufficient to power a small to medium-sized household. Use a solar energy calculator to understand your potential savings based on your specific location.

6. What factors affect the efficiency of solar panels?

Key factors include roof orientation and angle, shading from trees or nearby structures, weather patterns, and the quality of the solar panels. South-facing roofs at a 30° tilt are ideal in Ireland, and a solar panel calculator in Ireland can help refine estimates.

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