Strawman Proposal for a Taxonomy of Renewable Penetration Levels

by Peter Lilienthal, Ph.D. 09.20.2013
Thumbnail image for Strawman Proposal for a Taxonomy of Renewable Penetration Levels

This strawman taxonomy provides clear distinctions between different levels of renewable penetration.  By basing the criteria on the architecture and control of the power system, it avoids the ambiguity that is inherent in a taxonomy based on the percentage of renewable penetration or contribution.  Not only is the renewable penetration or contribution subject to multiple […]

Read the full article →

Call for Papers: Microgrid Deployment Forum

by Marilyn Walker, Ph.D. 07.11.2013
Thumbnail image for Call for Papers: Microgrid Deployment Forum

HOMER Energy will convene the Microgrid Deployment Forum 2013 in Cancun, Mexico, November 8 and 9 2013, in conjunction with the Solar World Congress, sponsored by the International Solar Energy Society. The Microgrid Deployment Forum 2013 is a two-day event that carefully examines the business models, optimal technology mix, and critical steps for successfully deploying […]

Read the full article →

Lifestyle Change: The 3rd Rail of Clean Energy

by Peter Lilienthal, Ph.D. 07.08.2013
Thumbnail image for Lifestyle Change: The 3rd Rail of Clean Energy

Nobody likes being told what to do. Clean energy was probably set back a decade when Jimmy Carter told us all to wear a sweater. Now Barack Obama is telling us we don’t have to wear a jacket. Hopefully, that is better.  Without behavior changes, the transition to clean energy requires investments in new technologies. […]

Read the full article →

HOMER Software Training Institute Held

by Marilyn Walker, Ph.D. 06.24.2013
Thumbnail image for HOMER Software Training Institute Held

The first HOMER Software Training Institute was held at HOMER Energy headquarters in Boulder, Colorado, on June 13 and 14, 2013. The first day focused on the basic principles of hybrid renewable microgrids using HOMER Explorer, and the second day explored advanced topics with HOMER 2. HOMER, or Hybrid Optimization of Multiple Energy Resources, is […]

Read the full article →

The Problem with 100% Renewable Energy

by Peter Lilienthal, Ph.D. 04.24.2013
Thumbnail image for The Problem with 100% Renewable Energy

The New York Times reported recently on the work of a group of Stanford researchers, who published a piece in the journal Energy Policy claiming that the main issues with 100% renewables are neither economic nor technical but rather social and political will. Jesse Berst of Smart Grid News countered with a title that included […]

Read the full article →

How to Classify Microgrids: Setting the Stage for a Distributed Generation Energy Future

by Peter Lilienthal, Ph.D. 04.02.2013
Thumbnail image for How to Classify Microgrids: Setting the Stage for a Distributed Generation Energy Future

In this post by HOMER CEO Dr. Peter Lilienthal, we consider the problem of how to classify microgrids. This is a special entry in our microgrid learning series. Although microgrids are becoming more and more prevalent in both the press and in energy world, there is no common definition of exactly what constitutes a microgrid […]

Read the full article →

Virgin seeks proposals for renewable energy project on Sir Richard Branson’s Necker Island

by Marilyn Walker, Ph.D. 02.13.2013
Thumbnail image for Virgin seeks proposals for renewable energy project on Sir Richard Branson’s Necker Island

http://pdf.reuters.com/htmlnews/8knews.asp?i=43059c3bf0e37541&u=urn:newsml:reuters.com:20130212:nBw126722a WASHINGTON–(Business Wire)– The Carbon War Room (CWR), Homer Energy, and Reznick Think Energy, LLC (RTE) launched a request for proposals (RFP) today on behalf of Virgin Limited Edition for the provision of renewable energy and energy services on Necker Island in the British Virgin Islands, home of Sir Richard Branson. The goals of the […]

Read the full article →

Will the real microgrid please stand up? (What is a microgrid and why should I care?)

by Marilyn Walker, Ph.D. 10.29.2012
Thumbnail image for Will the real microgrid please stand up? (What is a microgrid and why should I care?)

This is the second post in the HOMER Energy Microgrid Learning Series, designed to help the layperson understand what microgrids are and why they will soon be a household word. Microgrids are independent energy systems that provide grid backup or off-grid power. A slightly more technical definition is a local power network that uses distributed […]

Read the full article →

Smart Microgrids: Scripps Ranch Recreation Center Microgrid Installed

by Marilyn Walker, Ph.D. 10.02.2012
Thumbnail image for Smart Microgrids: Scripps Ranch Recreation Center Microgrid Installed

After careful planning (and wise application of the HOMER software), the City of San Diego, California now has a smart microgrid. The solution, commissioned by Princeton Power, integrates a 30kW photovoltaic (PV) array with a 100 kilowatt hour lithium-ion battery, which is designed to keep the facility running in the event of a power outage. […]

Read the full article →

Island Energy: How to get to high penetrations of renewable energy on islands

by Marilyn Walker, Ph.D. 10.02.2012
Thumbnail image for Island Energy: How to get to high penetrations of renewable energy on islands

With the cost of diesel continuing to rise and the cost of solar PV continuing to fall, the economics of renewable energy for islands, where diesel generation has been the norm, continue to improve. Island utilities and governments wishing to incorporate renewable energy into their mix want to know just how high they can go. […]

Read the full article →

The Microgrid Learning Series: Introduction and Overview

by Marilyn Walker, Ph.D. 09.05.2012
Thumbnail image for The Microgrid Learning Series: Introduction and Overview

Welcome to the first in a series of articles about microgrids, written specifically for people interested in clean energy and clean tech but without a background in power system engineering. If you have an interest in renewable energy, and in maximizing how much renewable energy is used throughout the world, then you should have some […]

Read the full article →

HOMER helps bring electricity to remote areas of Afghanistan

by Marilyn Walker, Ph.D. 07.18.2012
Thumbnail image for HOMER helps bring electricity to remote areas of Afghanistan

Phys.org reported today that Mahdi, Sadiqi, a recent graduate of Kansas State University and native of Afghanistan, used the HOMER software to model robust, reliable energy systems for remote areas of Afghanistan. Although HOMER is increasingly used for state of the art microgrid design, this example goes back to HOMER’s roots as a tool for […]

Read the full article →