Xtreme Power

iPower Systems, formerly Gaia Power, aims to provide turnkey distributed energy management and storage systems in 11kW building blocks. The company's systems are designed to reduce utility bills for businesses, provide an alternative to generators for backup power, deliver whole-home and whole-room power conditioning, and improve the performance of alternative energy technologies in off-grid and end-of-grid applications . iPower's core technology is a Modular Stationary Power Supply (MSPS), which integrates all balance-of-system components, including an IT platform with communications and control, power electronics, and proven energy storage technology, into a cabinet-sized energy management system. Per the company, the system: 1) installs easily 2) operates quietly, continuously and emissions-free 3) can be controlled remotely and networked to aggregate power and storage, and 4) integrates seamlessly with multiple power sources.

Sheetak aims to offer efficient, reliable, and green electronic refrigeration

By some measures, of all the energy used today over 60% is being lost as waste heat. Beakon Technologies is putting a patented Swedish physical invention in the field of thermoelectric to use for the benefit of sustainable human life by helping the world convert waste heat, wherever it occurs, back into useful electric energy. The technology can also be applied to more energy efficient cooling and heating, replacing compressors wherever they are used. In today's society the energy consumption is ever increasing and it becomes paramount to use the energy as efficient as possible. Today the company only use 1/3 of the energy, the rest becomes waste heat. The current solutions are based on non renewable natural resources that besides quickly draining also have a very negative environmental impact on the company's world. It is consequently vital for scientists to develop a sustainable energy system based on the sun, inner inertia and the movement of the earth. Beakon's innovation, a cooling and energy chip, is an important contribution in the quest for a sustainable energy system. The chip can with its high efficiency convert heat energy to electric energy and thereby converts the waste heat into useful electric energy. The chip can also be used as a heat pump. There are many applications for a thermoelectric chip with efficiency equivalent to today's compressors, but with advantages such as form factor, reliability, silent, environmentally friendly and simplicity to stabilize temperatures. The uniqueness of the core technology of Beakon Technologies is that it addresses the greatest problem of today's thermoelectric elements (Peltier element), the low efficiency. There are two competing heat carrying processes; one being the desired flow of electrons transporting heat in the intended direction and the other being the undesirable flow of phonons in the opposite direction which increases proportionally to how hard the Peltier element tries to pump electrons in the desired direction. The Beakon Technologies element contains a nano-scale "phonon trap", which hinders phonons creating the competing flow. Calculations show that the Beakon Technologies element has the potential of delivering 10-15 times higher energy efficiency than the Peltier elements of today, and 30% higher efficiency than today's compressors.

Core4 Systems is developing a system to more efficiently cool data centers. Core4's promised energy savings comes from reduced compression, achieved in a number of ways. Instead of filtering external air, Core4 claims to use only internal air ¢‚¬" in a method called refrigerant-side economizing ¢‚¬" which attempts to mitigate the filtering costs while cutting compressor energy consumption.Per the company, Core4 also uses outside wet-bulb temperatures ¢‚¬" the temperature at which water begins to evaporate outside ¢‚¬" rather than the higher dry bulb temperature, which aims to allow its gear to continue economizing even on extremely hot, humid days when airside systems can't. Refrigerant-side economizing also cuts down on server and hard drive failures, which contribute to the volume of e-waste shipped to overseas landfills.

EcoDog, Inc. offers energy consumption tools with the aim of helping to reduce homeowners' expenses and lowering demand for electricity.

Powercast has focused on capturing radio waves to power devices.