EnergyNeutralHome.pdf

When combined with energy management systems ems on

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When combined with energy management systems (EMS), on-site storage can maximise returns by allowing consumers to choose when they use their electricity or export it to the grid at peak prices. Rapid development in smart grids, smart appliances, interactive home EMS and battery technology means systems suitable for both residential and commercial application are already commercially available, although most are still undergoing development ( ). Next generation PHEVs with increased battery capacity can be plugged directly into a standard 15amp power outlet in the garage for two-way energy management. (Household power outlets are generally 10amp; specify 15amp at design or have it retrofitted by a licensed electrician.) Battery charging via EMS facilitates storage of excess electricity generated on site to augment household supply during early evening peak demand or low on-site generation periods. PHEV batteries can be recharged with off-peak power during the night or in parking stations during peak daytime solar PV output. PHEVS and stand alone battery systems also have potential to store off-peak grid electricity and return it to the grid during peak demand via grid interactive EMS and time-of-use metering. This helps to offset variable output from renewable sources like wind and solar and increases returns on investment by householders. Beyond the carbon zero home The ASBEC carbon zero definition requires that all efficiencies and renewable energy generation be achieved on site because off-site schemes can be unsubscribed or discontinued. However, when striving for affordable carbon zero living in a home that is unable to be altered (e.g. a rental or heritage listed property) or for beyond carbon zero status, off-site schemes are highly effective and often more efficient than on-site schemes. Carbon offsetting Carbon offsetting removes or averts greenhouse gas emissions that have been or would be emitted into the atmosphere and destroys, stores or ‘sequesters’ them for periods of varying duration depending on the sequestration method. Many carbon offset schemes are available in the market that can offset the emissions from our homes and lifestyles. Choose a scheme that guarantees permanent or long-term sequestration and creates local social and economic benefits. Calculation to offset emissions CO 2 emissions are calculated for an activity Offset credits are purchased through an accredited scheme Overall CO 2 in the system is neutral If 1 tonne of CO 2 is emitted each year, e.g. through transportation or burning of fossil fuels for electricity generation + 1 tonne of CO 2 is absorbed by planting trees or other sequestration measures = the net result of CO 2 being emitted by the activity is deemed to be carbon neutral Carbon offsetting through sequestration or diversion is a viable, low cost way to reduce atmospheric carbon emissions in the short to medium term. Because achieving carbon zero status is a voluntary act of
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