12kW Solar System UK: Price, How Much Does It Produce, How Big, and More

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Owning a 12 kW solar system has been one of the best decisions that homeowners, as well as business entities, can make as it helps in alleviating energy bills and also assists in the protection of the environment. In the case of Britain, a 12 kW system installed in a home is estimated to save about £47,198.50 in its 25-year lifecycle. This calculation concerns the current grid electricity price of £0.245/kWh (standard tariff as of October 2024), which is approximately £1,887.94 a year^[1]. They could rise with the expected increase in the electricity tariffs that have been projected in the future.

01| Rising Electric Costs

The electricity prices in the UK have continuously been above the inflation rate, which is why investing in solar energy is an important idea. Although they have flattened, they remain above the pre-crisis level; thus, While installing your 12 kW system can help reduce your energy costs, you’ll still need to draw power from the grid during periods of lower generation, and a standing charge will apply.

02 | Smart Export Guarantee (SEG)

The SEG scheme enables you to earn from the energy you export into the grid from your 12 kW solar system. Newly, it ranges as high as 15p per KWH. Companies such as Octopus Energy can provide this rate.

03 | Direct Electricity Savings

The significant advantage of having a 12 kW solar system is that you can use the power produced for your home, thus minimizing the power you draw from the grid.

04 | 12 kW Solar System Price and Benefits

The price of a 12 kW solar system in the UK is around £15,000, including installation and VAT. Over time, this cost can potentially be offset by savings on electricity bills and income from the Smart Export Guarantee (SEG), contributing to a shorter payback period.

05 | Solar Panel Requirements

Modern solar panels typically range between 300W and 500W each. For a 12 kW solar system, you would need between 24 and 44 panels, depending on their wattage.

06 | Space Requirements

Each solar panel covers about 1.6 square meters. Thus, a 12 kW solar system would require between 39 and 72 square meters of roof space, based on the panels’ efficiency.

07 | Energy Production

A 12 kW solar system can generate about 11,122 units a year. 26 kWh a year in the United Kingdom. This output depends on the shading, the location of the building, the orientation of the roof, the time of the year, and the fineness of the components of the system.

08 | Off-Grid Considerations

Determining the battery storage capacity is essential if you are planning for an off-grid system. A 12 kW solar power system ranges between 24 to 44 solar panels, while the battery’s size depends on the house’s voltage draw.

09 | Why Choose a 12 kW Solar System?

A 12 kW solar system suits big or big consumption households or business establishments. It effectively cuts the electricity expenses and the quantity of carbon emissions and permits you to generate income through the SEG by selling back energy to the grid. Though one has to incur an initial 12 kW solar system cost, in the long term, there is always a chance to save costs and, at the same time, protect the environment.

10 | Cost and Payback Period

The 12 kW solar system cost in the UK is between £12,000 and £13,000, including VAT. Due to its high energy output, this system can provide faster potential savings, making it a practical choice, especially for users with higher energy demands.

i.) Cost and Payback Period

The 12 kW solar system cost in the UK is between £12,000 and £13,000, including VAT. Owing to the high energy output level, the savings are among the highest, making this system a financially sound decision, particularly for users with high energy requirements.

ii.) Daily and Monthly Production

A 12 kW solar system can produce between 30 and 66 kWh daily, 900 to 2,000 kWh monthly, and 10,800 to 24,000 kWh annually. This output far exceeds the typical UK household’s annual consumption of about 2,900 kWh, providing ample energy for most residential needs.

iii.) Maximizing Efficiency

To achieve maximum efficiency, it’s essential to consider factors such as the direction and angle of your roof and the quality of the solar panels. Optimal performance is achieved with unobstructed, south-facing panels. While weather and shading can affect efficiency, a well-planned system can significantly reduce these impacts.

iv.) Solar Battery Options

To get even more benefits from your 12 kW solar system, it is recommended to include a solar battery. This addition can also benefit because the excess energy produced can be stored at another time, further moving away from the grid. The solar panels and battery cost between £2,500 and £10,000 extra, depending on size and capacity.

11 | Choosing the Right System

To invest in a 12 kW solar PV system, a certain amount of selection and comparison between various possibilities must be made. Solar4Good can help by directing you to experienced and skilled solar panel installers who will give you their recommendations and estimates. This assistance enables clients to contrast various suppliers and engage the most appropriate one for a particular service.

This makes the 12 kW solar system efficient in terms of savings and has a friendly environmental impact. Subsequently, the installation enables electricity generation and precise implementation of permits to decrease energy bills, earn money through SEG, and reduce carbon footprint. If one is to factor in every aspect and the various possibilities, a 12 kW solar system can be an excellent decision for homes and businesses.

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