Accurately predicting the formation, development and dissipation of fog and low stratus (LS) still poses a challenge for numerical weather prediction (NWP) models. Errors in the low cloud cover NWP forecasts directly impact the quality of photovoltaic (PV) power prediction. On days with LS, day-ahead forecast errors of Germany-wide PV power frequently lie within the magnitude of the balance energy and thus pose a challenge for maintaining grid stability. An indication in advance about the possible occurrence of a critical weather situation such as LS would represent a helpful tool for transmission system operators (TSOs) in their day-to-day business. In the following, a detection algorithm for low stratus risk (LSR) is developed and applied as post-processing to the NWP model forecasts of the regional non-hydrostatic model COSMO-DE, operational at the German Weather Service. The aim of the LSR product is to supply day-ahead warnings and to support the decision making process of the TSOs. The quality of the LSR is assessed by comparing the computed regions of LSR occurrence with a satellite based cloud classification product from the Nowcasting Satellite Facility (NWCSAF). The results show that the LSR provides additional information that should in particular be useful for risk adverse users.
“Americans overestimate the contribution of renewable energy in powering the U.S. and underestimate the role of coal, oil and natural gas now and in the future. In 2016, solar and wind together made up just 3% of U.S. energy consumption, while survey respondents put the figure at 20%. Furthermore, respondents predict that wind and solar will make up 34% of energy consumption in five years; however, the experts predict that they will be less than 5% of our energy consumption. Conversely, respondents perceived fossil fuels to be a much lower percentage of the energy mix than they are today and projected them to be even less in five years.”
“Incorporating Distributed Energy Resources (DERs) can optimize your energy strategy for cost efficiency, reliability, security, and reducing your organizations environmental impact – but the benefits can vary significantly. Learn how to assess the benefits of DERs with five key considerations. Download this guide to help you consider whether DERs are right for your organization, when to make the investment, and how to make a strong business case for DERs.”
This exclusive study will bring together a consortium of utilities, project developers, software and hardware providers, and other key microgrid and nanogrid stakeholders, to:
Discuss best practices and forward-looking business models
Explore regulatory frameworks that can facilitate market growth
Collaborate with industry peers and develop lasting relationships with key partners across the small grid industry in a close, collegial and low risk environment.
Providing access to a high-level team of Navigant small grid subject-matter experts in a casual, in-person group setting, the study will provide answers to the following questions:
What are the most promising economic models for financially sustainable microgrids and nanogrids?
What are the key technologies (and key vendors) playing or emerging in the small-grid sector?
What are the critical deployment issues and opportunities particular to small-scale grids?
What are the primary microgrid/nanogrid growth drivers, markets, and segments?
We post solicitations for renewable energy generation, renewable energy certificates, and green power as a courtesy to our web site visitors. Unless otherwise noted, these requests for proposals (RFPs) and solicitations are neither supported nor endorsed by the U.S. Department of Energy, Green Power Network.
” For example, existing biomass, geothermal, wind and solar facilities directly support more than 4,000 high-wage jobs, many in the Central Valley and Northern California whereunemployment remains high. Some of these facilities will not secure new contracts because a few retail sellers would be forced to buy the new high-priced geothermal. The net result is that many local communities would suffer both job losses and higher costs while a few communities in the Imperial Valley reap all the benefits.”
Read more here: http://www.sacbee.com/2014/08/15/6629618/viewpoints-geothermal-bill-will.html#storylink=cpy
One of the most important and sobering lessons learned in the wake of Superstorm Sandy was how susceptible New Jersey’s critical facilities, such as water and wastewater treatment centers, transportation centers, emergency shelters, and health care facilities are to major storm events and resulting energy disruptions. In order to combat similar widespread power losses and disruptions in critical services in the future, New Jersey is in the process of establishing the New Jersey Energy Resilience Bank (ERB) to encourage the development of distributed energy resources.
“To establish a common basis for electrical energy providers and consumers to manage and communicate about electrical energy consumption and forecasts, ASHRAE and the National Electrical Manufacturers Assn. (NEMA) are jointly sponsoring Standard 201P: Facility Smart Grid Information Model. The model will facilitate integration of objects and actions within the electrical infrastructure, such as on-site generation, demand response, load control, load shedding, submetering, load prediction, and energy storage. Ultimately, Standard 201P will promote the effectiveness of smart facilities, supporting optimal functionality of a national Smart Grid. The Smart Grid Interoperability Panel, a private/public partnership originally established by the National Institute of Standards and Technology, is acting in an advisory role in the development of the standard.”
via Smart Grid Standard 201P status check | Consulting-Specifying Engineer.