Category Archives: Photovoltaic Solar

Short-circuiting a solar boom in Japan

Spain is still feeling the painful effects of the costs of overbuilt solar PV, and now Japan is finding itself in the same position.  This article does a lousy job of explaining that the grid must be in exact supply … Continue reading

Posted in Distributed Generation, Grid instability, Photovoltaic Solar, Renewable Integration | Comments Off on Short-circuiting a solar boom in Japan

Is there enough renewable energy to replace fossil fuel electricity generation?

NREL. July 2012. U.S. Renewable Energy Technical Potentials: A GIS-Based Analysis. National Renewable Energy Laboratory. This document is a thought experiment that uses GIS mapping to estimate how much renewable power could possibly be generated in each state regardless of … Continue reading

Posted in Alternative Energy, Concentrated Solar Power, Photovoltaic Solar, Renewable Integration, Wind | Tagged , , , , , | 4 Comments

Solar Photovoltaics (PV) limited by raw materials

This paper (excerpts below) shows that there are limits to growth — there simply aren’t enough minerals in the world that can be produced physically and/or at a reasonable cost for the many of the most common kinds of PV … Continue reading

Posted in Alternative Energy Resources, Photovoltaic Solar | Comments Off on Solar Photovoltaics (PV) limited by raw materials

Distributed Generation is destabilizing the Electric Grid

Electricity distribution is designed to flow one way from a centralized system to customers. But Distributed Generation (DG) from solar  PV and wind violates this. Impacts caused by high penetration levels of intermittent renewable DG can be complex and severe … Continue reading

Posted in Electric Grid, Photovoltaic Solar, Wind | Comments Off on Distributed Generation is destabilizing the Electric Grid

Renewable incentives destabilize, harm electric grid

Wald, Matthew L.   7 Oct 2014. How Grid Efficiency Went South. New York times. Summary: 1) society would be better off if homeowners faced their rooftop solar panels westward, the peak time more energy is needed, but they won’t because … Continue reading

Posted in Alternative Energy, Natural Gas, Nuclear Power, Photovoltaic Solar | Comments Off on Renewable incentives destabilize, harm electric grid

Wind & Solar need thousands of tons of steel, aluminum, cement, concrete, copper but produce little energy

Summary of Sergio Pacca and Darpa Horvath 2002 Greenhouse Gas Emissions from Building and Operating  Electric Power Plants in the Upper Colorado River Basin ENVIRONMENTAL SCIENCE & TECHNOLOGY / VOL. 36, NO. 14 pp. 3194-3200 As you can see, Wind … Continue reading

Posted in Alternative Energy, Photovoltaic Solar, Wind | Tagged , , , , , | Comments Off on Wind & Solar need thousands of tons of steel, aluminum, cement, concrete, copper but produce little energy

Photovoltaic solar has many problems

Although sunlight is renewable, photovoltaic panels aren’t. PV isn’t ready yet. NREL (National Renewable Energy Lab) lists the technical barriers below in: PV Roadmap. U.S. Dept of Energy National Center for Photovoltaics. Lack of widespread availability of low-cost feedstock and … Continue reading

Posted in Photovoltaic Solar | Tagged , | Comments Off on Photovoltaic solar has many problems

Relax! Solar energy can save us. Krugman says so. by Ted Trainer

Ted Trainer is the author of Renewable Energy Cannot Sustain a Consumer Society and his “What to Do” can be found at The Simpler Way http://socialsciences.arts.unsw.edu.au/tsw/, in The Transition to a Sustainable and Just World, Envirobook, 2010, and the papers … Continue reading

Posted in Photovoltaic Solar | 2 Comments