ENERGY STRATEGIES - SAVINGS

Lightbulbenergyconservation

The initial cost was determined by the average cost of replacement bulbs ($5.00) x the number of bulbs needed for the residential building (4000; 200 residential units x 20 approximate lights per unit)

As per Module 13 replacing 20 bulbs "saves $511 the first year (net, after purchase of CFLs), and $1,519 in the tenth year, with a cumulative ten-year net savings of $11,448; reduce carbon emissions by 29,050 pounds over the ten years, equivalent to removing one car off the road for one year.

Energyharvestfromsolartiles

For our ecoblock, we expect to have approximately 10,000 sqf of usable roof space for solar tiles. This excludes permeable roofs such as green roofs, and accounts for the possibility that some sections of roof may not be ideal for solar energy harvest. Combined with a robust energy storage system, we anticipate that this amount will meet our ecoblock’s needs.

Modules: 1,786

Energy: 700 kW

Daily: 5,600 kW/daily

ANNUALTOTAL:2,044,000kW/yr

Assuming an average annual use per dwelling of 10,000 kW/yr, wehaveachievednotjustnetzeroenergy,butnetpositive.