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At the baseline scenario, the EUI is 53.9
By applying the envelope method the EUI had dropped to 50.5.
![image](https://www.notion.so/image/https%3A%2F%2Fprod-files-secure.s3.us-west-2.amazonaws.com%2Fc9309505-badd-417b-9f36-8d458a986009%2F56a688ce-3542-49a8-9b0e-95b824e729e9%2Fbce00df68e8d49ee8bfa8d7705eb154.png?id=27aea376-db60-4407-ae9b-674ac4bf8e51&table=block)
The detailed adjustment is changing the wall into 14-inch ICF
![image](https://www.notion.so/image/https%3A%2F%2Fprod-files-secure.s3.us-west-2.amazonaws.com%2Fc9309505-badd-417b-9f36-8d458a986009%2Fa93ab1dc-1b72-4860-b462-ae38185e963e%2Fc5d1c48dc9dc5b5700fb40d30a153d4.png?id=0bb9c14e-f61f-426b-b768-62970bea71e0&table=block)
By the lighting method, the EUI had dropped to 45.6.
![image](https://www.notion.so/image/https%3A%2F%2Fprod-files-secure.s3.us-west-2.amazonaws.com%2Fc9309505-badd-417b-9f36-8d458a986009%2F4ddb4fad-d5ea-4f9a-82eb-ba69b695a39f%2Fe27823c731320570518f0146dda0f94.png?id=d380ce84-935b-4b2c-9071-40b0224fc9d8&table=block)
The detailed adjustments are that: 1. Lower the lighting efficiency to 0.3 E/sf. 2. Lower the plug load efficiency to 0.6 W/sf.
![image](https://www.notion.so/image/https%3A%2F%2Fprod-files-secure.s3.us-west-2.amazonaws.com%2Fc9309505-badd-417b-9f36-8d458a986009%2F91818f65-7f38-4b35-95e2-44ff0d27fba5%2Fedae2a06bc8bc6035659931a7748885.png?id=98893115-7fbf-46ac-a9a4-794ad1131d81&table=block)
After applying the PV method, the EUI had dropped dramatically to 12.3.
![image](https://www.notion.so/image/https%3A%2F%2Fprod-files-secure.s3.us-west-2.amazonaws.com%2Fc9309505-badd-417b-9f36-8d458a986009%2Fd586419d-a50b-44b2-8d00-d65b726c3fba%2Face34f9d1f1b2c2e8e6b6fcb155ea8c.png?id=aca940c9-19b2-4fa8-809d-ad8e70cd3c22&table=block)
The detailed adjustment are: 1. Increase the panel efficiency to 20.4%. 2. Increase the payback limit to 20 years. 3. Increase the surface coverage of PV panels to 90%.
![image](https://www.notion.so/image/https%3A%2F%2Fprod-files-secure.s3.us-west-2.amazonaws.com%2Fc9309505-badd-417b-9f36-8d458a986009%2Fa56927a6-37bf-4e35-99c1-4e1acf3f1444%2Fe732872d6f8f136d7f4906de36b7f29.png?id=468c7f3b-b416-4c03-8aff-f45ccbdb6bd7&table=block)
As a result, adding PV panels can be the most efficient way to help us build a more sustainable building, the comparison among methods are below:
![image](https://www.notion.so/image/https%3A%2F%2Fprod-files-secure.s3.us-west-2.amazonaws.com%2Fc9309505-badd-417b-9f36-8d458a986009%2Fd34de8d9-fb17-492f-b5ee-be74730b37b0%2F260966f2c922f846a11a0c8fd964aa6.png?id=24432413-8d46-450e-ba09-31e62faea337&table=block)