San Francisco’s first neighborhood powered entirely by clean, renewable energy is planned for a 93-acre parcel at the former Hunters Point Naval Shipyard by a collaboration between San Francisco Public Utilities Commission (SFPUC) and Lennar BVHP.
It was bright and sunny in the Los Angeles area, the kind of summer day the Chamber of Commerce likes to trumpet. Convertible tops were down on the freeways, tourists behind sunglasses were taking in the sights and residents accustomed to the warm, balmy weather were attired in cotton comfort.
Distributed generation allows for the use of small-scale power generation technologies located nearby the load being served. It can be applied in many different forms. There are various methods by which customers can generate their own electricity, with or without the backup grid.
Solar-power cells, also known as photovoltaics (PV), are semiconductors that convert sunlight directly to direct current (DC) electric power. “The sun’s light dislodges free electrons in each cell on the solar panel and collects them on conductors to create a volt.
Photovoltaics (PV) have a sunny future in the building industry. After a number of false starts over the past 30 plus years, PV has the potential to become a significant contributor to the U.S. energy supply in the coming decades.
The Leadership in Energy and Environmental Design (LEED) recognizes the contribution that photovoltaics (PV) make to the sustainability and efficiency of a building project through its Green Building Rating System for New Construction & Major Renovations (LEED-NC Version 2.1).
Photovoltaic (PV) installations are becoming more common in commercial and residential buildings as PV-system efficiencies increase, installed costs decrease and cost of conventional utility-supplied electric power increases.
Energy codes establish the minimum requirements for the performance of new buildings. States have typically adopted either the ASHRAE/IESNA Standard 90.1 or the International Energy Conservation Code (IECC) as their energy code for commercial buildings.
A utility-interactive photovoltaic (PV) system is defined in Section 690.2 of the National Electrical Code (NEC) (NFPA 70-2005) as a “photovoltaic system that operates in parallel with and may deliver power to an electrical production and distribution network.” NEC Article 690 covers Solar Photovol