NetPLUS Concepts - Your home and your energy in one comfortable package.

Capturing the sun's energy -

NetPLUS Concepts' technologies provide a measurable reduction in the operating costs of businesses by reducing energy demand during peak usage periods. As the graph on the left shows, (click here to enlarge the graph) when electrical usage peaks approach total capacity, brownouts or blackouts can occur. Extremely hot or cold weather-related demand spikes also stress the grid enough to produce wide spread power outages.

	Supermarket Data Analysis-
	Applying the Arthur D. Little data to the Mid Atlantic region and a 60,000 square foot rooftop solar collector area can gather an annual average of 57 million BTUs/day. A typical supermarket would consume roughly 36 million BTUs/day or roughly 60% of the energy available at the rooftop. The worst case scenario occurs during mid-winter, when the fewest daylight hours are available. Even then, the theoretical maximum solar energy collected on a 60,000 square foot roof is about 47 million BTUs/day, which is nearly 1.5 times the energy needed to supply the HVAC requirements of this building. The remaining electrical demand, around 200 kW/h, equates to about 6 billion BTUs annually, about 4 billion more than is required to make the store completely self-sufficient.

Costs and Return on Investment -

Three types of refrigeration systems—DX, Secondary Loop and Distributed Systems—were considered in the Arthur D. Little report. Measured consumption in the stores studied averaged 3.7 gigawatts per year. If we assign a cost of 10¢ per kWh, these stores would face estimated electricity bills of nearly $31,000 per month.

While retrofitting our technology to existing buildings is challenging at best, specifying our technology for a new build adds less than $30 per square foot to construction costs, providing a five year Return On Investment.

The above ROI calculation is predicated on energy prices remaining flat and become even more attractive as the cost of electricity continue to rise.

Supermarket Case Study Data -
	Average store size is 60,000 square feet
	Average design load for low temperature is 330,000 Btu/hour and the average design load for medium temperature is 1,150,000 Btu/hour
	Aggregated average connected load for a 60,000 sq. ft. supermarket is 440 kW or 1,496,000 BTUs per hour
	Average connected electric load is 440 kW, ~56% of which is used to operate refrigeration equipment.

	The above data is excerpted from a 1999 Arthur D. Little report, based on an average of six Hussmann installations throughout the United States.