Distributed Generation

HOMER’s Hand-Picked Distributed Energy Highlights, Week Ended 4/29

Lots of news in the world of distributed energy this past week, including the U.S. surpassing the 1 million mark in solar energy installations…

HOMER Energy’s Hand-picked News Highlights, Week Ended April 22

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The momentum fueling a global transition to low-, or zero-emissions renewable energy resources continues. A gathering of world leaders and representatives of nearly 170 nations in Paris to sign the historic UN climate treaty was just one of the highlights.

Brooklyn Startup Broadens Solar Power Access with P2P Energy Exchange

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Back in the 1990s the advent of peer-to-peer (P2P) computing sites such as Napster turned reproduction and distribution of music, then TV programs and films, upside down and inside out. A small Brooklyn startup is now looking to do the same for electricity.   TransActive Grid on April 11 announced the first paid P2P energy transaction crossed its online energy trading platform. One member of the Brooklyn Microgrid – former DOE Energy Star […]

A Bright Future for Microgrids and Distributed Generation in Australia: Microgrid 2015 Wrap

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More than 150 highly engaged people from 10 countries attended HOMER Energy’s 3rd and largest annual microgrid conference in Canberra, Australia on October 14 and 15 2015. The meeting kicked off with an inspiring and motivating opening keynote by Simon Corbell, Deputy Minister of the ACT Government and Minister of Environment and Planning. ACT has chosen to be a leader in Australia, with a goal of 100% renewable energy by 2025. Minister Corbell […]

A Technology-Driven Disruption of Historic Proportion: 70 Seconds to Explain

It’s no secret that NRG has been vocal and clear about its opinion of what is happening to energy, in the U.S. and the world, from their lead on the Necker Island (home to out-of-the-box billionaire Richard Branson) microgrid project to their new branding focused on sustainability. This quote of NRG CEO David Crane in today’s RenewEconomy, which they dub as the… “Future of energy – and decline of centralised generation – explained […]

Using HOMER to Model Advanced Inverter Technology in Solar-Plus-Storage for Boulder, Colorado

Solar plus storage has been pegged as a game changer for the grid-connected world, offering a mechanism that allows much higher penetrations of renewable energy than simple rooftop PV. Additionally, properly controlled solar plus storage systems can deliver many additional values including demand-response and increased reliability, taking over when the grid is not available. HOMER Energy is part of the team led by Evolution7 Labs that was recently selected as a recipient of […]

Central Solar Parks versus Microgrids: Cost Versus Security and Reliability

One of the biggest debates in today’s “energy society” relates to grid-scale renewable projects versus distributed generation, in particular the role of rooftop residential solar systems. Proponents of large centralized solar parks, such as the recently announced Xcel project in Pueblo, Colorado, point out, very correctly, that economies of scale allow those projects to produce power at about half the cost (excluding incentives) of residential rooftop projects. The typical counter argument, that distributed […]

Strawman Proposal for a Taxonomy of Renewable Penetration Levels

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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 definitions, but it can vary widely depending on the load shape, characteristics of specific components, and the resource, […]

The Problem with 100% Renewable Energy

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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 the phrase, “Get real, Stanford.” As experts in the economics of renewable energy, HOMER Energy would like to […]