### Solar

Explained

### How many panels can you fit?

**Key Factors**

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### When we design your solar system a few key factors are your annual electrical bill, the overall size of your roof and determining the amount of shading on the roof. The roof space will tell us how many panels we can fit on it, thus determining size of the solar system in kW. Shading analysis will give us a more accurate system performance estimate. The size of the system will determine the price reduction on your current electrical bill.

**A few things to consider**

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### *The system estimates described below are based on our 10x 360W panel (3.6kW) system with and without a 2.6kWh battery. The estimates below may differ from where you live. We have assumed your roof is south-facing, has zero shading and has the size and structural integrity to install the possible system sizes below. As well, we have included in system performance loss due to soilage on your panels. The performance estimates may differ for your home. The estimated electrical power consumption for each type of property is information provided from UK power networks. For a full report including financial summary please contact us.

**Semi-detached**

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**10 Panel System**

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The property is expected to consume 3847kWh of electricity each year. Around 33% of this (1274 kWh) is expected to be supplied directly by the solar array. The remaining 67% (2585 kWh) is supplied from the grid.

The solar PV array is expected to generate 4044 kWh over a typical year. 31% (1274 kWh) of the electricity generated is expected to be used directly in the property. The remaining generation (2771 kWh, or 69% of the total) is exported to the grid.

**Independence-**Proportion of electricity consumption provided by PV 33 %

**10 Panel with battery storage**

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The property is expected to consume 3847kWh of electricity each year. Around 33% of this (1274 kWh) is expected to be supplied directly by the solar array. Another 17% (647 kWh) is supplied from the storage battery. The remaining 50% (1938 kWh) is supplied from the grid.

The total self-consumption is expected to be 50% (1921 kWh) with the battery storage system. Without battery storage it would be 33% (1274 kWh).

The solar PV array is expected to generate 4044 kWh over a typical year. 31% (1274 kWh) of the electricity generated is expected to be used directly in the property. 19% (736 kWh) is directed to the battery for later use, although 90 kWh of this is lost during battery charging and discharging. The remaining generation (2034 kWh, or 50% of the total) is exported to the grid.

**Lifetime Savings with Battery**

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**£10836 over 25 years.**

**Detached house**

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**10 Panel System**

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The property is expected to consume 4153kWh of electricity each year. Around 32% of this (1345 kWh) is expected to be supplied directly by the solar array. The remaining 68% (2822 kWh) is supplied from the grid.

The solar PV array is expected to generate 4044 kWh over a typical year. 33% (1345 kWh) of the electricity generated is expected to be used directly in the property. The remaining generation (2700 kWh, or 67% of the total) is exported to the grid.

**10 Panel with battery storage**

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33% (1345 kWh) of the electricity generated is expected to be used directly in the property. 18% (735 kWh) is directed to the battery for later use, although 90 kWh of this is lost during battery charging and discharging. The remaining generation (1964 kWh, or 49% of the total) is exported to the grid.

**Lifetime Savings with Battery**

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**£11227 over 25 years.**

**Mid-terrace**

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**10 Panel System**

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The property is expected to consume 2779kWh of electricity each year. Around 36% of this (1003 kWh) is expected to be supplied directly by the solar array. The remaining 64% (1783 kWh) is supplied from the grid.

The solar PV array is expected to generate 4044 kWh over a typical year. 25% (1003 kWh) of the electricity generated is expected to be used directly in the property. The remaining generation (3041 kWh, or 75% of the total) is exported to the grid.

**Independence-**Proportion of electricity consumption provided by PV 36 %

**10 Panel with battery storage**

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The property is expected to consume 2779kWh of electricity each year. Around 36% of this (1003 kWh) is expected to be supplied directly by the solar array. Another 23% (632 kWh) is supplied from the storage battery. The remaining 41% (1151 kWh) is supplied from the grid.

The total self-consumption is expected to be 59% (1635 kWh) with the battery storage system. Without battery storage it would be 36% (1003 kWh).The solar PV array is expected to generate 4044 kWh over a typical year. 25% (1003 kWh) of the electricity generated is expected to be used directly in the property. 18% (719 kWh) is directed to the battery for later use, although 88 kWh of this is lost during battery charging and discharging. The remaining generation (2322 kWh, or 57% of the total) is exported to the grid.

**Independence-**Proportion of electricity consumption provided by PV 59 %

**Lifetime Savings with Battery**

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**£5540 over 25 years.**

**End-terrace**

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**10 Panel System**

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The property is expected to consume 3442kWh of electricity each year. Around 34% of this (1175 kWh) is expected to be supplied directly by the solar array. The remaining 66% (2277 kWh) is supplied from the grid.

The solar PV array is expected to generate 4044 kWh over a typical year. 29% (1175 kWh) of the electricity generated is expected to be used directly in the property. The remaining generation (2869 kWh, or 71% of the total) is exported to the grid.

**Independence-**Proportion of electricity consumption provided by PV 34 %

**10 Panel with battery storage**

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The property is expected to consume 3442kWh of electricity each year. Around 34% of this (1175 kWh) is expected to be supplied directly by the solar array. Another 19% (645 kWh) is supplied from the storage battery. The remaining 47% (1632 kWh) is supplied from the grid.

The total self-consumption is expected to be 53% (1820 kWh) with the battery storage system. Without battery storage it would be 34% (1175 kWh).

The solar PV array is expected to generate 4044 kWh over a typical year. 29% (1175 kWh) of the electricity generated is expected to be used directly in the property. 18% (734 kWh) is directed to the battery for later use, although 89 kWh of this is lost during battery charging and discharging. The remaining generation (2135 kWh, or 53% of the total) is exported to the grid.

**Independence-**Proportion of electricity consumption provided by PV 53 %

**Lifetime Savings with Battery**

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**£10279 over 25 years.**

**Bungalow**

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**10 Panel System**

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The property is expected to consume 3866kWh of electricity each year. Around 33% of this (1278 kWh) is expected to be supplied directly by the solar array. The remaining 67% (2600 kWh) is supplied from the grid.

The solar PV array is expected to generate 4044 kWh over a typical year. 32% (1278 kWh) of the electricity generated is expected to be used directly in the property. The remaining generation (2766 kWh, or 68% of the total) is exported to the grid.

**Independence-**Proportion of electricity consumption provided by PV 33 %

**10 Panel with battery storage**

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The property is expected to consume 3866kWh of electricity each year. Around 33% of this (1278 kWh) is expected to be supplied directly by the solar array. Another 17% (647 kWh) is supplied from the storage battery. The remaining 50% (1952 kWh) is supplied from the grid.

The total self-consumption is expected to be 50% (1925 kWh) with the battery storage system. Without battery storage it would be 33% (1278 kWh).

The solar PV array is expected to generate 4044 kWh over a typical year. 32% (1278 kWh) of the electricity generated is expected to be used directly in the property. 18% (736 kWh) is directed to the battery for later use, although 90 kWh of this is lost during battery charging and discharging. The remaining generation (2030 kWh, or 50% of the total) is exported to the grid.

**Independence-**Proportion of electricity consumption provided by PV 50 %

**Lifetime Savings with Battery**

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**£10887 over 25 years.**

### Solar module types

### Mono-Crystalline

### Poly-Crystalline

**What's the difference?**

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