Rate Analysis of Two Photovoltaic Systems in San Diego

Doris, E. ; Ong, S. ; Van Geet, O.

关键词: ECONOMICS;    PRICES;    SOLAR SYSTEM;    WATER TREATMENT RENEWABLE ENERGY;    RE;    CALIFORNIA;    SAN DIEGO;    CITY OF SAN DIEGO;    SOLAR PHOTOVOLTAICS;    SOLAR;    PV;    BUILDING ENERGY;    DEMAND CHARGES;    WATER TREATMENT FACILITIES;    PEAK LOAD;    RATE OPTIONS;    Energy Analysis;   

DOI  :  10.2172/962496
RP-ID  :  NREL/TP-6A2-43537
PID  :  OSTI ID: 962496
Others  :  TRN: US200916%%286

美国|英语

来源: SciTech Connect

【 摘 要 】

Analysts have found increasing evidence that rate structure has impacts on the economics of solar systems. This paper uses 2007 15-minute interval photovoltaic (PV) system and load data from two San Diego City water treatment facilities to illustrate impacts of different rate designs. The comparison is based on rates available in San Diego at the time of data collection and include proportionately small to large demand charges (relative to volumetric consumption), and varying on- and off- peak times. Findings are twofold for these large commercial systems: 1) transferring costs into demand charges does not result in savings and 2) changes in peak times do not result in a major cost difference during the course of a year. While lessons learned and discussion on rate components are based on the findings, the applicability is limited to buildings with similar systems, environments, rate options, and loads.