How does a solar (photovoltaic PV) panel system work?
The solar panel contains several individual cells which are made largely of two layers of silicon. By design there is an electronic imbalance between the two layers and when the sun’s photons bombard the cell it knocks the electrons loose and they “bounce” from the top layer to the bottom layer creating energy. These bouncing electrons are captured as electricity by metal contacts in the panel.
Since the electricity created inside the panel is direct current or DC, it is necessary to push the current through an inverter which creates alternating current or AC. Once converted this electricity is then routed to your electrical outlets for your use.
Since the electricity created inside the panel is direct current or DC, it is necessary to push the current through an inverter which creates alternating current or AC. Once converted this electricity is then routed to your electrical outlets for your use.
How long will a solar panel system last?
Although most solar components have a 25-year warranty, they are expected to continue to produce power for 40+ years. There are no moving parts and virtually no maintenance which means longevity also comes with reliability. Major solar module (panel) manufacturers have modules that were installed 37 years ago and they are still producing clean, renewable energy today
How much does a solar installation cost?
The cost of a system varies on a few factors including the system size and location. In the past four years prices have decreased as much as 75% making solar a financially sound investment. Many solar systems can be installed under $2.00 per watt prior to Federal and State Incentives. Economies of scale also come into play as larger systems will cost less than smaller system on a per kW basis.
How will switching to solar solar impact my business?
From day one solar power offsets a portion of your electricity purchases from your utility and therefore reduces your electric bills. Since there is very little, if any, on-going costs, you also lock in the solar portion of your electricity costs which is a great hedge against inflation and makes budgeting your utility costs more predictable.
What size solar electric system does my business need?
The recommended size of your system depends on your power consumption. If you want to completely offset your current electrical usage from the utility with a solar electric system, the first step is to review your annual energy consumption which can be obtained from your utility bill. Commercial systems can range in sizes from 10,000W up to and beyond 100,000W, or 1,000 to 10,000 square feet of solar modules. Your needs will depend upon the size of your facility and your energy loads.
Will solar increase the property value of my Building?
Absolutely, for every $1 of electricity that you offset through solar you will increase the value of your building by $20. So if you reduce your electricity consumption by $20,000 your building will be worth an additional $400,000, immediately.
What is the average payback period for a commercial solar system?
The average payback period for commercial solar is 3 to 7 years. This depends on the location and size, federal and local incentives.
Will solar improve my company’s brand and image?
Definitely! Going solar will demonstrate that your company is committed to environmental responsibility. In this transparent economy, consumers are increasingly demanding that the companies they do business with engage in sustainable business practices. There is a huge amount of public interest in renewable energy, climate and sustainability.
Does it matter what type of roof I have?
Solar modules can be installed on any roof, but different roofing materials require different methods which can impact the system's installation costs. If your roof will need to be replaced during the next ten years we recommend that you replace it before having your system installed.
What is the best orientation of my roof?
In general there’s one big rule: if you’re in the U.S., your solar panels should face true south (though there is an exception).
Can the building owner sell power back to their utility?
Yes, through net metering any excess electricity generated will spin your meter backwards which has the effect of selling your excess power to the utility at a full retail rate. On a monthly basis, you pay only the net of the power you used. If you generate more power than you used in a month your utility company will forward your excess solar energy credits to be used during the next month. This allows any excess energy generated in the summer to be used during the winter when there is less solar energy and usually higher energy usage.
Can my business reduce its carbon footprint by installing a solar system?
Answer to question 11