Grid Builder: Understanding the Dynamics of Power Systems |…

What Grid Builder Simulates

Grid Builder is an advanced simulation that allows users to construct and manage a 3D island's energy infrastructure. By placing various types of power plants such as wind, solar, gas, nuclear, hydroelectric, and battery storage units, you can model the dynamics of a real-world power grid over a full year (8,760 hours).

The simulation provides detailed metrics like capacity factors for each source, the infamous duck curve that illustrates the challenge of integrating high levels of solar energy into the grid, loss-of-load hours indicating periods when demand exceeds supply, and cost per MWh as well as CO2 emissions.

The Duck Curve Explained

The duck curve is a graph that shows how solar power production varies throughout the day. It takes its name from its distinctive shape resembling a duck, with a steep rise in the morning as the sun comes up and a rapid decline as it sets. This curve highlights the challenge of managing grid stability when relying heavily on intermittent renewable sources like solar.

The simulation allows you to observe how different energy mixes can flatten this curve, reducing the need for traditional peaking power plants that are typically used to balance supply with demand.

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Capacity Factors and Their Importance

Capacity factors refer to the ratio of actual electricity output from a generating unit compared to its maximum possible output over a given period. For example, solar panels might have a capacity factor of 20% if they produce at 20% of their peak capacity on average throughout the year.

Understanding these factors is crucial for optimizing energy production and ensuring grid reliability. Grid Builder helps users see how different combinations of power sources can affect overall system efficiency.

Reliability and Cost Considerations

Grid reliability is a key concern, especially when integrating more variable renewable resources into the grid. The simulation models loss-of-load hours to show how often the grid might fail to meet demand, which can lead to significant economic and social impacts.

Cost per MWh (megawatt-hour) is another critical metric that Grid Builder calculates. Users can explore different energy mixes to find the most cost-effective solution while balancing environmental concerns such as CO2 emissions.

Frequently asked questions

What does the duck curve represent in power grids?

The duck curve represents the variation in solar power production throughout a day, highlighting the challenge of managing grid stability when relying heavily on solar energy. It shows how demand and supply must be balanced to avoid overproduction or shortages.

How does Grid Builder help with understanding capacity factors?

Grid Builder provides detailed metrics for each power source's capacity factor, helping users understand the actual output compared to maximum possible output. This information is crucial for optimizing energy production and ensuring grid reliability.

Why are loss-of-load hours important in a power grid simulation?

Loss-of-load hours indicate periods when demand exceeds supply, leading to potential blackouts or brownouts. In Grid Builder, these metrics help users understand the importance of maintaining adequate reserve capacity and managing energy storage solutions.

How does Grid Builder assist in balancing cost and environmental impact?

Grid Builder calculates the cost per MWh and CO2 emissions for different energy mixes. This helps users find a balance between economic efficiency and environmental sustainability, allowing them to make informed decisions about their power grid design.

Try it live

Everything above runs in your browser — open Grid Builder: Capacity Mix, Duck Curve and Reliability Lab and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.

▶ Open Grid Builder: Capacity Mix, Duck Curve and Reliability Lab simulation