Conf Call Jul07 Mike Keesee Solar Subdivisions

Starting a New Solar Homes Utility Program SEPA Conference Call July 18, 2007

Mike Keesee PV Project Manager Renewable Generation Assets SMUD

SMUD’S Experience • SMUD’s Solar Home Experience • What Builders and Homebuyers Want • Lessons Learned

Why Solar? • Fulfills Utility’s RPS commitment • State Efficiency Standards are reaching their limits • Reduces summer peak, yet preserves off-peak sales • Creates local jobs • Because our customers want it ……

Average 15 Minute Interval Peak Demand ZEH vs. Non ZEH July, 2005 MW

Avg High temp 98 degrees F Avg Min Temp 65 degees F

3,500

3,000

System Peak MW Average of ZEH Net Grid Load (kW) Average of Power Produced by PV (kW) Average of Non-ZEH Net Grid Load (kW) Avg Gross Load (Kw)

kW

3.5

2.9 kW 3

2.5

2,500 2.2 kW; 24%

2

1.6 kW 2,000

1.5 1.3 kW; 55% 1.2 kW; 25% 1

1,500

0.5 1,000 0 500 -0.4 kW; 125%

0

-0.5

-1

12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 AM AM AM AM AM AM AM AM AM AM AM AM PM PM PM PM PM PM PM PM PM PM PM PM

Time

Why PV In Residential New Construction? • Residential New Construction is PV’s “Holy Grail” – High volume drives down costs – Standardized system design – Builders masters of cost cutting

• Zero Energy Homes – Energy Efficiency with 2 kW PV Energy Roofs – Potential: 16+MW Capacity in District per year

• At