23 ATTACHMENTS 3-8 - Laserfiche WebLink

DRAFT 10. Energy Element Renewables Program provides generous rebates fox residential and commercial renewable energy installations. Transmission and Distribution of Electricity An electric power system consists of power plants, transmission lines, distribution substations, and distribution lines. Currently, the Tri Valley's electric power is supplied by a combination of private suppliers which sell power to PG&E for resale. Electric power is "stepped up" to higher voltages'- at the generating source to allow power to be delivered over a number of wires. The electricity is transported via a network or "grid" of high-voltage transmission lines. At substations, transformers "step down" the voltage to lower levels fox distribution. There are €~e-four large substations in/near Pleasanton that serve many customers within the Planning Axea: Vineyard„ Radum„ North Dublin and San Ramon. Figure 12-1 shows the locations of these multi-customer substations. There are also three smaller substations that serve single customers: ~°~°° ;''°' "~°~; °°a r ._i_.. Tri-Valley Capacity_Increase Project Most electric power is brought to Pleasanton and other Tri-Valley substations via transmission lines connected to the statewide grid system. Electric power capacity is looked at on a subregional rather than citywide basis. Local electrical capacity is a function of ~ transmission network ca aci to bring this power to Pleasanton and the Tri Valley, the-capacity of the local substations to ower the voltages (ox step down the power to deliverable voltages, and; e~j~ the adeq~xe~+-aba ility of the local distribution network to deliver adequate power to customersei~-users. In 2001 PG&E reported that the Tri-Valley electrical transmission and distribution system was in need of an upgrade to increase capacity. To address this issue, in 2002 PG&E constructed a transmission-=capacity-=increase project in the Tri_Valley. In Pleasanton, the project included the installation of a new underground 230 kV line under/near Vineyard Avenue and the upgrading of the existing Vineyard Substation to accommodate the increased capacity. Transmission and Distribution of Natural Gas A natural gas power system consists of undexgrotznd natural gas reservoirs, drilling equipment, long =distance transmission pipelines, and local distribution pipelines. Natural gas is a fossil fuel made of decomposed plant and animal material and is usually found near a petroleum reservoir. Natural gas is pumped from the underground reservoir into large transmission pipelines which transport the gas to local distribution pipelines. Some local distribution systems lead to underground storage. These natural gas storage areas are utilized during seasonal peaks. In Pleasanton there axe three natural gas transmission pipelines. These pipelines axe located on Foothill Road, Santa Rita Road, and Stanley Boulevard. There are no natural gas storage areas in ~ Voltage equals the electric potential expressed in volts. Energy redline mpy per PC, OS 07 10-3 Ciy Council 6/5/07