Solar Spectrum Ltd

Solar Panel PV Installations

Call: 01689 885048

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Important Information


From 1st April 2012 you will need an Energy Performance Certificate (EPC) if you are selling or leasing your property.

An EPC survey is an assessment based on visual inspection, recording and measuring various aspects of a property. On average it takes about an hour, and does not involve drilling holes or disturbing the fabric of a property in any way. Assessors will require access to the loft where possible. The EPC is assessing the ways in which a property uses and loses heat or energy

In general, an EPC Survey records the following aspects of a property:

> Exterior/ interior dimension measurements

> Windows and the type of glazing

> Aspects of the heating system (visual observations)

> Aspects of hot water system (visual observations)

> The boiler and systems controls (visual observations)

> Any secondary heating system

> Presence of any energy saving features/ light bulbs

> Inspection of the loft space and insulation (if accessible)

It is advisable to have any guarantees for any works done to your home available 
for the inspector. You may also bring to the notice of the inspector any information 
about your home's heating system, insulation and refurbishment works that could 
have added extra insulation.

An EPC Survey can only be done by a licensed energy assessor

The Department of Energy & Climate Change (DECC) has now confirmed that from 1st April 2012, homes will require an Energy Performance Certificate (EPC) with a SAP (Standard Assessment Procedure) Rating of D or above (A being the highest - very energy efficient, lower running costs) to qualify for the higher feed-in tariff (FiT) for a solar panel installation.
NOTE: Solar PV can be included towards the D Rating.

SAP Ratings are expressed on a scale of 1 to 100 - the higher the number, the better the rating.

Below is a table of the SAP Ratings

Energy Efficiency Rating Points
A 92 plus
B 81-91
C 69-80
D 55-68
E 39-54
F 21-38
G 1-20

The table below shows how Solar PV can improve your SAP Rating

kWp SAP Improvement
1 2-4
2 4-6
3 6-14
4 8-18
5 16-25
6 18-28
7 25-30
8 28-40
9 35-40+
10 25-50+

The EPC will be undertaken once a PV Installation Agreement is signed and a deposit taken. Within the following seven days, an accredited EPC Inspector will undertake the survey to produce a draft EPC Rating of your property. Remember by installing a Solar PV System, it itself, may already have raised your Rating to a D or above.

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Some properties will simply not be able to achieve a D Rating, or the cost to do so will be prohibitive. In those situations there is a strong likelihood that the installation will not proceed. The payment for the EPC will be deducted from the initial deposit. The deposit will be returned in full only minus the EPC fee. The EPC will serve other purposes in the future. It is valid for 10 years, and could be used if you sell your property.

Here are how different measures can also potentially improve your SAP Rating

Improvement Measure Potential Improvement in SAP Rating
Loft Insulation 4-10
Cavity wall Insulation 5-9
Solid Wall Insulation 6-12
Hot Water Cylinder Insulation 2-3
Draught-proofing 1-2
Low Energy Lights 1
Cylinder Thermostat 2-4
Room Stat 1-6
TRVs 2-7
Boiler Upgrade 5-20
Double Glazing 2-5