Lesson 2: Evaluating Energy Solutions

Key Idea

Engineering is about solving problems within limits. When designing a solution, engineers first define the criteria, which are the specific goals or standards the solution must meet to be considered successful.

Simultaneously, they must account for constraints, which are the non-negotiable limitations such as budget, safety rules, or available space. A viable solution is one that effectively satisfies the criteria without violating any of the constraints.

Key Idea

Engineers do not guess; they investigate. Before selecting a new energy system, they must gather comprehensive evidence about all available options. This involves researching how each source works, its long-term reliability, and its environmental impact.

By collecting this data, engineers can weigh the pros and cons of each choice based on facts rather than opinions, ensuring the decision is grounded in scientific evidence.

Key Idea

All energy solutions share the same basic function: they help communities obtain electricity by converting a natural form of energy into electrical power. However, no solution is perfect.

Each method comes with inherent trade-offs—beneficial features in one area may lead to drawbacks in another. Communities must evaluate these trade-offs to determine which solution aligns best with their specific needs and geography.