Photovoltaic Systems

The cells in Photovoltaic (PV) panels convert the sun’s energy into a DC current, which flows into an inverter and changes DC to AC electricity in order to supply power to household appliances, machines or utility loads.
PV modules have a 50+ year life expectancy; show little degradation over time while in operation; and usually carry a 25-year manufacturer’s warranty.
Photovoltaic costs have dropped considerably in the last couple years. On the utility scale, PV is rapidly becoming in parity with coal. As coal costs go up, the cost of PV has lowered to provide a cleaner and sustainable solution to our power needs. Via local distributed generation, PV will rapidly become the goal for future development. Locally generated power is more efficient because it does not travel through miles of utility lines and transformers. Homes and businesses will greatly benefit from producing their own power and selling the excess power back to the grid.
The investment in photovoltaic systems is a win-win situation for the consumer and the power company. The utility will not have to upgrade their current gird system to accommodate growth. They also would benefit from a large amount of PV power produced during peak demand periods Allowing them to stabilize, and possibly reduce utility rates.
SWT Energy is not only working with homes and business applications, the company is working with communities to establish base-load renewable applications along with micro-grid applications. PV can be combined with other renewable energy sources to greatly reduce the dependence of electricity produced by fossil fuel.
SWT Energy provides many variations when comes to the most costeffective and, or, practical installation for the end user. Roof-mount hardware can be mounted directly to the roof or with ballasted racking systems. Awnings can be engineered to provide both power and protection from the weather. Ground-mount applications can get set at a fixed angle on a singe pole or multiple poles. Tracking systems allow the more power with less panel needed. Single-axis and dual-axis trackers are very popular and SWT Energy offers both.
The electrical distribution can be handled in several ways. The typical system will have the solar panels wired and series and ran to a single inverter located near the main panel or at the solar array. These inverters brands SWT Energy works with include SMA, KACO, Fronius and Power One. When battery backup systems are installed, the Outback inverter and controller is the logical choice.
SWT Energy also specializes in micro-inverters. These inverters attach directly to PV modules , or pairs of modules, and convert DC power to AC power at the array. These systems reduce costs, work superior in areas where shade is a concern and can be installed in phases to work with the customer’s needs or budget. The main manufacturers for micro-inverters include Enphase, Direct Grid and Power One.
Most inverter companies offer software for monitoring systems on a personal computer or company server. Web-base monitoring is also available. This allows the customer to check on their system any where the internet is available.
SWT Energy has over 30 years of energy expertise. Owner, Randy Schantell, is a certified energy analyst and has done energy audits on over 1000 schools, hospitals and government buildings via the Department of Energy (DOE). SWT Energy will analyze consumption history and customize a system to provide an accurate projection of the proposed photovoltaic system . This includes annually load, annual PV power production, monthly PV power production, firm installation cost and projected return on investment. SWT will also help the customer with all paperwork required for permits and utility connection requirements.
Click the following links to figure a rough cost estimate based on your energy usage. There are two pages for each: 50% of load and GRID MAX. GRID MAX is rated at 75% of load, the cut-off point for maximum return.