A Zero Energy home (also Zero Net Energy (ZNE) or Net Zero Energy (NZE) home), produces as much energy through on-site renewable energy (usually solar PV), as it consumes annually. The energy consumption is reduced through higher energy efficiency home systems resulting in a self-sustaining home consuming a net zero energy. A Zero Energy home is thus a super energy efficient home powered by a solar PV system. Currently PV is the norm as it is the most economical (in future other renewable sources such as small wind or fuel cells will be a possibility).
A Zero Energy Home produces as much energy as it consumes, in a year
The Zero Energy software module is powered by our proprietary A.I. algorithms, public and private data cohorts, and rapid energy analyses & financial analyses. Write to us to get access and get a solution for your home or for your client's home.
Zero Energy meaning and definitions are driven by the end goal, and have been rapidly evolving - from "near ZNE" to "Site ZNE" and "Source ZNE" to the more recent "Zero TDV" (time dependent valuation).
The various definitions and interpretations are based on:
1) How the energy consumed and generated is factored (Site or Source),
2) Economics and the cost,
3) Societal value, factoring in peak consumption (TDV),
4) Environmental impact (Emissions)
Zero Net Energy Time Dependent Valuation (TDV) is the CEC (California Energy Commission) and CPUC (California Public Utilities Commission) preferred definition that will be used in California, in the future, and takes into account the peak hours consumption. The energy generated and energy efficiency measure savings are valued differently at different times to reflect the actual costs to users, to the utility system, and to society.
Zero Energy is Not Zero Electricity Bills
The above definitions do not target achieving zero bills. A zero energy home does not guarantee zero electric bills, as of now. This is important for the home owners, residents and buyers to understand.
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