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Renewable/NG Heating and Cooling (Space and Water)

Integrated systems combine a renewable energy source with natural gas to meet either heating or cooling demands, such as gas-fired water heaters or heat pumps integrated with solar thermal heating. Technology innovation would be focused on the interface between the two system components and on advances that would render these systems more cost-competitive on the market. Given historic challenges in developing integrated systems that are sufficiently cost-competitive for broad market application, it is not expected that these technologies will result in significant emissions reductions during the time period.

Table 16: Residential Technology Summary

Stated Need Technology Descriptor

Impact Ranking

Economy Environment

Small-scale (single family home) CHP units with reduced capital cost in order to encourage uptake in the residential market.

Less Expensive Micro-CHP Units 1.46 0.43

Lower capital cost ultra-high efficiency water heaters that improve user experience, integrate with low-flow appliances and meet footprint requirements.

Less Expensive Ultra-High Efficiency Water Heaters

1.48 0.58

Technologies that improve the efficiency of residential heating and/or cooling for apartment buildings

Multi-unit Heat Pumps 1.37 0.69

Measurement and data management to better control natural gas consumption in residential buildings

Smart Energy Meters/System components and Data Management Solutions

1.49 0.64

Integrated systems that combine a renewable energy source with natural gas to meet either heating or cooling demands.

Renewable/NG Heating and Cooling (Space and Water)

0.79 0.43

Figure 23: Residential Technology Plot

0.0

0.5

1.0

0.0 1.0 2.0

Economy

Less Expensive Micro-CHP Units

Renewable/NG Heating and Cooling (Space & Water)

Residential Smart Energy Meters/System Components and Data Management Solutions

Less Expensive Ultra-High Efficiency Water Heaters

Multi-unit Heat Pumps