# Subdivision 5. International Energy Conservation Code

Codified through Bill No. CB-018-2026, adopted May 12, 2026, effective July 24, 2026. Source: Municode, Supplement 2026 Update 2. Editorial notes and legislative history omitted.

## Subdivision 5. International Energy Conservation Code

### Sec. 4-256. Building Envelope Requirements; C402.2.1.1, Roof Solar Reflective and Thermal Emittance

Prince George's County, Md., Code § 4-256 (2026)

Section C402.2.1.1. is amended to read as follows: Low sloped roofs, with a slope less than 2 units vertical in 12 horizontal, directly above cooled conditioned spaces in Climate Zones 1, 2, 3 and 4 shall comply with one or more options in Table C402.2.1.1.

### Sec. 4-257. Building Envelope Requirements. Table C402.3. Fenestration

Prince George's County, Md., Code § 4-257 (2026)

Table C402.3 is amended to read as follows: SHGC is Climate Zone 4 is changed from .40 to .35.

### Sec. 4-258. Electrical Power and Lighting Systems (Mandatory); C405.2.1 Occupant Sensor Controls

Prince George's County, Md., Code § 4-258 (2026)

Section C405.2.1 Occupant sensor controls shall be installed in all classrooms, conference/meeting rooms, employee lunch and break rooms, private offices, restrooms, storage rooms, janitorial closets, enclosed stairways, and other spaces 300 square feet (28m2) or less enclosed by floor-to-ceiling height partitions. These automatically turn off lights within 30 minutes of all occupants leaving the space, and shall turn the lighting on to not more than 50 percent power.

### Sec. 4-259. Electrical Power and Lighting Systems (Mandatory); C405.2.4. Specific Application Controls

Prince George's County, Md., Code § 4-259 (2026)

Section C405.2.4 7. Lighting for parking areas shall have automatic controls so that after 15 minutes of non-activity, lighting power density can be reduced by 30 percent.

### Sec. 4-260. Electrical Power and Lighting Systems (Mandatory); C405.10. Solar Energy Systems

Prince George's County, Md., Code § 4-260 (2026)

Section C405.10. Provide adequate on-site access for solar energy systems and provide interconnection pathways to building distribution. Documentation must be provided through construction documents and the main electrical service panel.

### Sec. 4-261. Additional Efficiency Package Options; C406.5. On-site Renewable Energy

Prince George's County, Md., Code § 4-261 (2026)

Section C406.5. Total minimum ratings of on-site renewable energy systems shall comply with one of the following: 1. Provide not less than 1.75 Btu (1850 W), or not less than 0.50 watts per square foot (5.4 W/m2) or conditioned floor area. 2. Provide not less than 5 percent of the energy used within the building for building mechanical and service water heating equipment and lighting regulated in this chapter.

### Sec. 4-262. Additional Efficiency Package Options; C406.5, District Energy Systems

Prince George's County, Md., Code § 4-262 (2026)

Section C406.5 is added to read as follows: A minimum of 40 percent of heating and cooling load as calculated in section C403.2.2 must be provided by a district energy system.

### Sec. 4-263. Additional Efficiency Package Options; C406.9. Water Heating Needs

Prince George's County, Md., Code § 4-263 (2026)

Section C406.9. Hotels, motels, hospitals, restaurants, buildings with residential occupancies, buildings with laundry facilities or other high process service water heating needs or buildings showing a service hot water load of 10 percent or more of total building energy shall provide at least forty percent (40%) of hot water through instantaneous or tankless fuel-fired water heating systems, waste heat recovery from equipment or Combined Heat and Power (CHP), solar water heating systems.