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Microgrids ? Part 1 What Are They?

For Tuesday 23 June 2020 provided by (#letsfindsolutions)

News for green investors and organisations, stock watch & grant opportunities

Microgrids ? Part 1 What Are They?

In the strictest sense, a microgrid is defined as a group of interconnected loads and distributed energy resources within clearly defined electrical boundaries that acts as a single controllable entity with respect to the grid. A microgrid can connect and disconnect from the grid to enable it to operate in both grid-connected and island-mode. It typically incorporates renewable energy sources, but it could also include co or trigeneration and/or diesel generator capacity. It can also be a system completely independent of the grid, such as remote mining operations.

However, the use of the word microgrid is used liberally to describe all types of systems. For instance, a house that has solar generation and battery storage is a microgrid in the sense that the loads are interconnected, it has distributed energy sources and can act in island-mode. A label for this arrangement, however, would more accurately be nanogrid.

An embedded network is a type of microgrid. An embedded network is a type of electrical network you?ll find in a privately owned and operated multi-tenant development. The consumption of this network is consolidated to a single connection point called a Parent Meter. These meters connect directly to the National Electricity Market (NEM), which is used for all purchases of electricity for the building.?Electricity is then ?on-sold? to each customer in the development based on measured consumption. Whoever owns, controls or operates the embedded network in the building is referred to as the Exempt Embedded Network Service provider (EENSP). It incorporates renewable energy options such as?solar generation, battery storage and (EV) charging.?It also incorporates energy efficiencies specifically for the Common Areas ? such as LED lighting, sensor lighting, elevator?management, HVAC (heating, ventilating, and air conditioning) and heat?pumps.

The word minigrid is often used instead of microgrid. Some organizations define minigrids in terms of the generation capacity i.e. between 10 kW to 10 MW. Others define it in terms of customers reached i.e. minigrids reaching 20-100 customers are called micro minigrids and minigrids reaching over 500 customers are called full minigrids. Therefore, a microgrid or micro minigrid could be a school, hospital or university campus.

However, there are a number of products being marketed as microgrids but are actually sophisticated data collection and data swapping systems. We will discuss this aspect in the next newsletter.

Grants/Subsidies/Funding ? Microgrid funding

The Australian government has awarded about $13.2 million (U.S.) for microgrid feasibility studies as part of a growing effort to bolster grid reliability and provide electricity in unserved areas across the continent. The June 5 awards were the first to be made by the Regional and Remote Communities Reliability Fund, which intends to provide $35.1 million over five years.

The fund supports feasibility studies looking at microgrid technologies to replace, upgrade or supplement existing electricity supply arrangements in off-grid and fringe-of grid communities in regional and remote areas.

The first tranche of funding will help 17 projects study whether setting up a microgrid, or upgrading existing off-grid technologies, can better meet the electricity needs of regional and remote communities.

?Microgrid technology is becoming increasingly cost effective, creating the opportunity for a reliable, low cost, off-grid supply to our regional communities and industries,? Angus Taylor said. ?This funding will enable many communities to realize the potential of innovative technologies or distributed energy resources, like solar and batteries, or reduce their reliance on costly diesel generation.?

The microgrid feasibility studies range widely in their goals. One of the larger projects, for example, will test the feasibility of setting up microgrids for the dairy industry based on biogas anaerobic digester power generation.

Another will explore setting up microgrids using solar-diesel hybrid generation to serve Aboriginal people living in Western Australia?s remote communities. In Exmouth, Western Australia, microgrid technology will be used to help the town achieve 100 percent renewable energy.

Another project will focus a 1-MW solar and battery microgrid that will combine the energy needs of several industrial businesses into an aggregated network. The structure will provide cost savings for the clients and increase their energy security with the addition of shared resources, according to the Australian government.

The Australian government is increasingly focusing on improving grid reliability and providing economic power, especially at the edges of the grid system, according to Terry Mohn, CEO of General Microgrids and former chairman of the Australia-based International Microgrid Association.

Australia?s remote regions tend to have unreliable power and often rely on diesel generators, Mohn said, noting that wildfires have led to recent outages. Also, as more and more distributed solar comes online, Australia is seeing a growing mid-day trough in demand, leading baseload generation to move towards retirement, he said. ?Microgrids have an opportunity to offset some of the challenges,? Mohn said.

Eco-tip for the day ? Globes

An LED globe that draws 9 watts, puts out the equivalent amount of light of a 60-watt incandescent light. That amount of light can be quantified as 650 lumens. It would be written on the packet as 650 LM. So, an LED globe that emits 850 lumens of light is brighter and the lumen emission will be shown on the packet at 850 LM. In this case, the number of watts the lamp draws would be about 11 watts.

The next thing to look for is the colour of the light emitted from the globe. The packet will show either ?yellow light, 2800 K?. The symbol K stands for Kelvin degrees and is a measure of the colour of light. The whiter the light, the higher the Kelvin. So, daylight colour light will be about 4000 K.

Share watch ? Cann Group (CAN:ASX)

Established in 2014, Cann Group is the first company to be issued with a Cannabis Research Licence by the Australian Government?s Office of Drug Control (ODC) in February 2017. This Licence authorises Cann to cultivate cannabis (in association with a relevant permit) for research purposes. In addition, in March 2017, Cann Group was issued Australia?s first Medicinal Cannabis Cultivation Licence, which authorised Cann to produce Australian-grown cannabis (in association a relevant permit) for medicinal purposes.

Cann?s Board and management have extensive experience in the agriculture, agronomic and health research sectors and in developing and commercialising agricultural technology.

Cann has established R&D and cultivation facilities in Australia and is pursuing a fully-integrated business model with collaboration agreements, resources and capabilities that will enable it to establish a leading position in plant genetics, breeding, cultivation, production, manufacturing, and clinical evaluation to facilitate the supply of medicinal cannabis for a range of diseases and medical conditions.

Cann?s vision is to be a leading developer and supplier of cannabis, cannabis resin and medicinal cannabis products.

The graph shows the five-year share price history.

Financial indicators

The VIX fear gauge down by 1.14 points since Friday EST to 31.77.

The Dow Jones Industrial Average down since last Friday EST by 55.14 points or 0.21% to 26,024.96, the STOXX 600 up 1.03 points or 0.28% to 364.54 and the Shanghai Composite index up 19.72 points or 0.67% to 2,970.62.

Gold up to 1,761.50. US 10-year Treasury Bonds up to 0.714 and oil up to 40.48. Cryptos Bitcoin up 298.24 points since Friday or 3.20% to 9,628.81.

ASX 200 up 106.60 points or 1.82% since Friday to 5,954.40. The Aussie dollar on 69.21US cents.


Eco Market Spot Prices

ACCU $15.80

LGC $38.50

STC $39.40

ESC $25.00

VEEC $30.25

Sources:?RenewEconomy, demandmanager,? Reuters, SMH, Market Watch, Forbes

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