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Using 316 marine-grade stainless steel and polycarbonate lenses, the 60-, 120-, and 180-watt LED boat lights resist damage from shock and vibration. Hardware is included for surface-mounting on a variety of transom types, and the LED lights must be completely submerged to function properly. To prevent failure due to out-of-water use, a built-in temperature protection circuit powers the lights off if they reach 194 degrees Fahrenheit. The underwater boat lights operate within a wide 9-32V DC range and are designed to last 50,000 hours.

One of the limitations of some grid-tied photovoltaic systems is that the owner will only benefit as long as there is sunlight while the grid is functioning. Otherwise, if there is an outage, they may not even use the energy they are generating from the rooftop. During such times when the grid is disconnected, the owner can neither use the rooftop solar nor export the energy to the grid.

Owners of PV systems without backup functionalities can upgrade by adding AC coupling. This enables them to store energy and use it anytime, including during emergencies and grid outages. The AC coupling converts a simple grid-tied system into a Grid/hybrid or grid interactive system. This provides grid-ties savings whenever the grid is up and running, and off-grid independence, as well as security when there is a utility outage.

The main components of AC coupling include an energy storage system, a grid-interactive inverter/charger, a coupling device and the second panel with additional wiring for the critical loads to supply during outages.

Battery storage enables better power management by providing a number of benefits which include:

Compact Fluorescent Lights: Think of a normal florescent light tube, but curled up to fit the shape of a standard light bulb. The best CFLs last 10 times as long and use a quarter of the energy of old incandescent bulbs, according to the federal Department of Energy. The drawbacks of CFLs are that they can be damaged if they are turned on and off too frequently, and they don't work well in the cold so their outdoor utility is limited.

Light Emitting Diodes: Traditionally, LEDs were for power lights on appliances and other limited uses, but advances in technology have greatly expanded their utility, and there are now numerous options for LED light bulbs available to consumers. LEDs are a fantastic value: they use only about 25 percent of the energy of standard light bulbs and can last up to 25 times as long.

Halogen Incandescents: Halogen bulbs are a twist on the old-fashioned incandescent bulbs. They function in essentially the same manner, except the glass globe is filled with halogen gas, which amplifies the light and therefore decreases the amount of electricity needed, hiking its efficiency rating. They aren't as stingy with energy as CFL or LED lights, but work well for outdoor spotlighting.

While modern bulbs cost more to buy than the incandescents you were accustomed to, their increased longevity and efficiency actually lead to big savings in the long run.

Electricity is like a kitchen knife. If you use it wisely, it can cut food and prepare delicacies. If you use it unwisely, it can end up cutting your finger. Electricity flows through anything that is a “conductor.” Interestingly, humans are very good conductors of electricity!

Since electricity is a form of energy, a strong current has the ability to seriously harm you. If the current is strong enough, you can be fatally injured. Due to the strong possibility of a fatal injury occurring, electric cables are insulated. Another important reason why they are insulated is to prevent energy from dissipating into the surroundings, allowing it to be conserved.