How To Design Your Solar Roof: Sizing Guide

How To Design Your Solar Roof: Sizing Guide

Photo voltaic power is a renewable power that converts daylight power into electrical energy. That is made doable by way of photovoltaic modules. You may then use the generated electrical energy immediately. The additional energy is saved by both getting fed again to the facility traces or battery banks. This power supply may be very clear and dependable and can be utilized each in residential homes or industries.

Now, folks on this energy supply would not have to depend on solely panels since there are actually photo voltaic shingles (roof tiles). These shingles are sometimes a hybrid of each roofing sheets and photo voltaic panels. They work identical to panels by absorbing the daylight after which altering it to electrical energy.

Therefore, they provide help to defend your own home the identical approach typical roofs do whereas supplying the house with electrical energy as nicely.

You may’t set up these shingles by your self. As a substitute, you’ll have to rent knowledgeable with the technical know-how, gear, and software program to deal with the job. You may go to to be taught extra concerning the software program utilized by contractors for photo voltaic set up.

On this article, we shall be guiding you thru the varied sizing that must be carried out when your photo voltaic roof is being designed. However let’s first check out the benefits and drawbacks of photo voltaic roofs.

Benefits and Disadvantages of Photo voltaic Roofs


The next are a few of the main benefits of photo voltaic roofs:

  • In the event you’re constructing your roof from the scratch, photo voltaic shingles are less expensive than panels
  • Sustaining them is simpler than sustaining panels
  • They’re sturdy and weather-resistant
  • They’re extra aesthetically pleasing than panels as their look is sleeker. In the event you’re layering them in your already current roof, they are going to combine seamlessly with it. That is very true for asphalt and concrete roofs


The next are a few of the main disadvantages of photo voltaic roofs:

  • They’re comparatively new when in comparison with panels which have existed for some time now. Due to this fact, they don’t seem to be provided by all producers
  • They’re comparatively costlier
  • It’s nonetheless an evolving expertise and a few installations points typically come up. For example, they aren’t appropriate for each form of roof. So, typically, it’s possible you’ll want a complete roof substitute earlier than the photo voltaic roof could be put in.
  • The colours and kinds they’re accessible in are considerably restricted.

Sizing Concerned in Photo voltaic Roof Design

The next must be carried out so that you can design your photo voltaic roof:

1. Figuring out Energy Consumption

The very first thing that must be carried out when designing the system is determining the precise power and energy consumption of the masses the system shall be supplying. That is carried out by calculating the precise Watt-hours each equipment will use in a day. The Watt-hours required out of your system per day may also be calculated.

2. PV Modules Sizing

The PV modules’ dimension sometimes determines the quantity of electrical energy being produced, and totally different dimension produces totally different electrical energy quantity.

The PV modules’ dimension in addition to the situation’s local weather determines the height watt that the system produces. With regards to PV modules sizing, the Watt-peak the photovoltaic modules want shall be calculated, in addition to, the PV shingles wanted.

The shingles estimate gotten is normally the minimal shingles required. In the event you set up greater than the required shingles, then you can be optimizing the system. But when fewer shingles than what’s calculated are used, your system’s efficiency could also be affected, it could even fail to work throughout cloudy climate.

3. Battery Sizing

For PV techniques, deep cycle batteries are the advisable battery kind. These batteries are particularly designed for discharging power at decrease ranges and cycle discharged and charged every day for a number of years. You may watch this video to be taught extra about deep cycle batteries.

One other factor that must be correctly thought-about in a PV system design is the battery dimension. The battery must be sufficiently big in order that it could possibly conveniently retailer power that shall be sufficient to energy the house and home equipment throughout cloudy days and night time instances.

4. Inverter Sizing

Inverters are used for techniques that want AC energy outputs. The inverter’s enter score must not ever be under the home equipment’ complete watt. The inverter additionally must have the precise nominal voltage that the battery does.

If you’re designing a stand-alone system, then your inverter must be sufficiently big to hold the overall Watts that shall be used at a time. Your inverter must be twenty-five to thirty % bigger than the home equipment’ Watts.


Photo voltaic roofs are new however they’ve a variety of potentials and would most certainly quickly turn out to be very fashionable. Whereas they’ve their disadvantages, they’ve so many different professionals over panels. If you wish to get photo voltaic roofs in your dwelling, then some elements sizing should be correctly evaluated whereas designing the system. We’ve mentioned a few of these elements on this article.

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