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Knowledge Hub & FAQ’s

Whether it’s solar panels or heat pumps, no matter what your question, our renewable energy experts will have it covered.

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Renewable Energy Expertise and Insight

Ryan Daly our Renewables Director gives insight b4b Renewables recent utilities and communal building projects and shares how the b4b Renewables are leading the way in business, utilities and housing renewable solutions.

Introduction to our Sales Director Mark Fraser from b4b Renewables and why choose b4b Renewables and when to start looking into renewable solutions for your business.

Andrew Johnston from b4b Renewables discusses solar PV use in Winter and planning permission plus why businesses should choose b4b Renewables as their solutions provider for their sustainability journey.

Ryan Daly the Renewables director for b4b Renewables discussed how SolarPV can Compliment Heat pumps for your business.

Introduction to our Managing Director – Darren Lemon and why choose b4b Renewables.

Andrew Johnston the business development manager from b4b Renewables discusses what helps available and how to find out more.

Are you a business owner in Northern Ireland feeling the pressure of rising energy costs?

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In Northern Ireland, most businesses don’t require planning permission to install solar panels, as they are generally considered “permitted development.” However, some exceptions apply, such as:

  • The panels exceed the roof’s size.
  • The building is listed or located in a conservation area.
  • The solar panels are ground-mounted.
  • The installation affects the building’s appearance or surrounding environment.

To ensure compliance with local regulations, it’s recommended that businesses consult with their local planning office before installation.

For geothermal installations (such as ground source heat pumps) in Northern Ireland, planning permission is typically not required for most domestic and small commercial installations, as they often fall under “permitted development” rights. However, there are certain conditions where planning permission may be necessary, such as:

  • If the installation involves large-scale drilling or significant excavation.
  • The property is listed, located in a conservation area, or is of special environmental interest.
  • The installation impacts nearby water sources or protected land.

For larger or more complex systems, or if the site has specific environmental sensitivities, it’s best to consult with your local planning authority to confirm if planning permission is needed.

Summary – The number of solar panels a business needs depends on factors such as energy consumption, panel output, roof space, budget, and solar goals. In Northern Ireland, a typical solar panel produces around 250-300 kWh per year. To offset 30,000 kWh/year, a business would need around 100 panels, requiring about 160 square meters of roof space. Businesses should calculate their annual energy use and available space to determine how many panels are needed, with a solar installer providing a more detailed estimate.

The number of solar panels a business needs depends on several key factors, including:

1. Energy Consumption

• Start by assessing how much electricity your business uses. You can check your energy bills to find out your annual consumption, measured in kilowatt-hours (kWh).
• For example, if your business consumes 50,000 kWh per year, you’d need enough solar panels to cover a portion or all of that demand.

2. Solar Panel Output

• A typical solar panel produces around 300-400 watts of power. In Northern Ireland, each panel can generate approximately 250 to 300 kWh annually (depending on panel efficiency, weather, and location).
• To generate 50,000 kWh/year, you’d need roughly 167 to 200 solar panels, assuming each produces around 300 kWh/year.

3. Roof Space

• Solar panels require a fair amount of space. Each panel typically takes up about 1.6 square meters. For larger systems, businesses may need more roof space or consider ground-mounted panels.
• A business with limited roof space may need higher-efficiency panels to meet energy needs with fewer panels.

4. Budget

• Installation costs can vary based on the number of panels, inverter quality, and additional features (e.g., battery storage). Larger systems typically come with a higher upfront cost, but the payback period shortens as businesses save more on energy bills.

5. Solar Goals

• If the goal is to offset 100% of your electricity consumption, you’d need a system sized to match that demand. However, some businesses aim to offset a portion of their electricity and remain connected to the grid.

Example:

If your business uses 30,000 kWh annually, and each panel produces 300 kWh/year, you’d need around 100 panels. This system would likely take up about 160 square meters of roof space.

Summary:

To determine how many solar panels your business needs, calculate your energy consumption, estimate how much each panel can produce, and factor in available space and budget. Consulting with a solar installer can provide a more precise estimate based on your specific business needs.

Solar panels can suit many roof types, including tile, metal, and flat roofs, but factors like roof angle, size, shading, and condition must be considered. For roofs with significant challenges, alternatives like ground-mounted systems might be better.

The time it takes b4b renewables to install solar panels on a business roof varies based on the size and complexity of the system, but here’s a general breakdown:

1. Site Assessment and Design (1-2 weeks)

• Before installation, a solar installer will assess your roof and energy needs. This includes designing the system and getting approvals, which may take 1-2 weeks.

2. Permits and Approvals (2-6 weeks)

• Securing permits, grid connection approvals, and any necessary planning permission typically takes between 2 to 6 weeks, depending on local regulations.

3. Installation Time (1-5 days)

• Once permits are in place, the actual installation takes 1-5 days, depending on system size and roof complexity. A small or medium-sized system (up to 50 kW) could take 1-3 days, while larger commercial systems may take closer to 5 days.

4. Inspection and Grid Connection (1-2 weeks)

• After installation, the system must be inspected and connected to the grid. This may take another 1-2 weeks, depending on scheduling with local authorities and utility providers.

Total Time:

From start to finish, the process generally takes 4 to 8 weeks, but the actual installation on the roof is usually completed within a few days. The timeline can vary depending on system size, local approval processes, and weather conditions.

In Northern Ireland there is normally a grant or schemes to assist with the costs of Solar PV solutions, contact us at 4b4 Renewables for immediate assistance.

RENEWABLE TECHNOLOGIES – from Solar Panels to Heat Pumps, we design and install end-to-end renewables solutions for your business, helping to cut your energy costs.

Yes, our solar PV panels do work on dull or cloudy days. While their energy output is reduced compared to sunny conditions, they can still generate electricity because they capture both direct and diffuse sunlight. Here are some key points:

  1. Diffuse Sunlight: Even on cloudy days, sunlight is scattered in the atmosphere, allowing solar panels to produce energy.
  2. Output Levels: On overcast days, solar panels can typically produce about 80-90% of their potential output compared to sunny days.
  3. Modern Technology: Many modern solar panels are designed to perform efficiently under various light conditions, making them effective even in lower light situations.

Overall, while solar panels are most effective in direct sunlight, they remain a viable energy source during dull weather, contributing to overall energy generation throughout the year.

Ground Source Heat Pumps (GSHP) and Air Source Heat Pumps (ASHP) are both effective systems for heating and cooling, but they operate differently and have distinct advantages. Here’s a breakdown of their differences and considerations for your business:

Ground Source Heat Pumps (GSHP)

  • How It Works: GSHPs use the stable temperature of the ground to transfer heat. They require underground loops that circulate a fluid to absorb heat from the ground in winter and release heat in summer.
  • Efficiency: Generally more efficient than ASHPs, especially in colder climates, because ground temperatures are relatively stable year-round.
  • Installation: Requires significant upfront investment due to excavation and installation of underground loops. Space is also needed for the installation.
  • Maintenance: Lower maintenance costs and longer lifespan (typically 20-25 years) compared to ASHPs.
  • Suitability: Ideal for larger properties or businesses with enough land for installation. They work well for heating and cooling and can also provide hot water.

Air Source Heat Pumps (ASHP)

  • How It Works: ASHPs extract heat from the air outside and transfer it indoors. They can also reverse the process for cooling in warmer months.
  • Efficiency: Still efficient, but performance can decrease in very cold temperatures, making them less effective in harsh winters compared to GSHPs.
  • Installation: Generally easier and less expensive to install than GSHPs, as they do not require extensive ground excavation.
  • Maintenance: Maintenance is typically straightforward, but the lifespan is usually shorter (around 15-20 years).
  • Suitability: Suitable for a wide range of properties, particularly where space is limited. They can be an excellent choice for smaller businesses or those in urban areas.

Which Is Better for Your Business?

  • Space Availability: If you have enough land for installation, GSHPs may be more efficient and provide greater long-term savings.
  • Budget: ASHPs have lower upfront costs and are easier to install, making them a good option for businesses with budget constraints.
  • Heating Needs: Consider your heating and cooling requirements. GSHPs are often better for larger, consistent heating needs, while ASHPs are suitable for varied demands.
  • Climate: If your business is in a region with harsh winters, GSHPs might be more effective. In milder climates, ASHPs can be very effective.

Ultimately, the best choice depends on your specific business needs, budget, and available space. Consulting with b4b renewables can help determine the most suitable option for your situation.

Solar PV battery storage for commercial businesses combines solar panels with battery systems to generate and store electricity. It allows businesses to use solar energy during the day and store excess energy for later use, reducing grid reliance and energy costs. Key benefits include energy independence, cost savings, backup power during outages, and reduced carbon footprint. It’s ideal for companies with high energy demands, especially those aiming to improve sustainability and lower operational costs.

Investing in solar battery storage for your business can be worth it if you want to reduce energy costs, improve energy independence, and support sustainability goals. It can provide backup power during outages, lower reliance on the grid, and help avoid high peak electricity rates. The decision depends on your business’s energy needs, location, and available incentives. While the upfront cost can be high, long-term savings and environmental benefits often make it a valuable investment for many companies.

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