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R esidentia l renewa b le energy m a rket ha s b ec o m e c o m petitive in rec ent yea rs. Lo s Angeles is o ne o f the to p 20 so la r c ities in the c o untry (Burr, 2014). S o la r pa nel insta llers ha ve spent m illio ns o f do lla rs o n m a rketing a nd a dvertising to c la im tha t their so la r pa nel system s c a n sa ve c o nsum ers’ m o ney o n their elec tric b ills. Ho useho ld susta ina b ility sho uld b e a universa l prio rity fo r fa m ilies a ro und Lo s Angeles, but due to the c o sts o f so la r pa nels, a nd insta lla tio n, it ha s b ec o m e a n o b sta c le fo r lo w-inc o m e fa m ilies.

Ho w c a n residents in disa dva nta ge c o m m unities (DAC) b enefit fro m ro o fto p so la r? S B 535 wa s pa ssed b a c k in 2012 to reduc e greenho use ga s em issio ns, in a dditio n a qua rter o f the pro c eeds fro m the Greenho use Ga s R educ tio n Fund m ust go to pro jec ts tha t pro vide a b enefit to DAC. A m inim um o f 10 perc ent o f the funds m ust b e fo r pro jec ts lo c a ted within tho se c o m m unities. T he legisla tio n gives the Ca lifo rnia Enviro nm enta l Pro tec tio n Agenc y respo nsib ility fo r identifying tho se c o m m unities (o ehha .c a .go v). W ith ro o fto p so la r, DAC c a n reduc e their elec tric ity b ill a nd b ec o m e susta ina b le a ll a t o nc e. T he Lo w-Inc o m eHo using T a x Credit (LIHT C) pro gra m enc o ura ges the investm ent o f priva te equity in the develo pm ent o f a ffo rda b le renta l ho using fo r lo w-inc o m e ho useho lds (o c c .go v). LIHT C gives S ta te a nd lo c a l LIHT C-a llo c a ting a genc ies the equiva lent o f nea rly $8 b illio n in a nnua l budget a utho rity to issue ta x credits fo r the a c quisitio n, reha b ilita tio n, o r new c o nstruc tio n o f renta l ho using ta rgeted to lo wer-inc o m e ho useho lds.

Introduction

ReferencesBurr J., Dutzik T., S c hneider J. & S a rgent R . 2014. “S hining Cities: At the fo refro nt o f Am eric a ’s S o la r Energy R evo lutio n” Enviro nm ent T exa s R esea rc h & Po lic y Center.

Methodology Integra ting Geo gra phic a l Info rm a tio n S ystem s (GIS ) a llo ws us to identify lo w-inc o m e ho useho lds in disa dva nta ged c o m m unities. Using da ta fro m the N a tio na l Ho using Preserva tio n Da ta b a se, US Census a nd Ca lEPA, we will identify fina nc ia lly distressed pa rc els in disa dva nta ged c o m m unities. W ith LA Co unty S o la r m a p, we c a n a lso explo re the o ptim ized so la r energy po tentia l o f a c ity b y c a lc ula ting the ro o fto p a rea o f ea c h pa rc el.

Optimal rooftop area ( sq.ft.) x Solar Panel Energy Output (per sq.ft.) = Potential Solar Energy ProductionAssuming peak sun hours in Los Angeles County is 5 hours, Potential Solar Energy Production x 5 hours x 7 days x 4 weeks= Monthly Electricity Production

Analysis and Recommendation- Mo st o f the m ulti-fa m ily LIHT C pa rc els ha ve high so la r energy po tentia l due to their la rge ro o fto p a rea . - S o m e LIHT C pa rc els no t o nly a c hieve zero building sta nda rd but a lso regenera te eno ugh renewa b le energy fo r the entire zip c o de a rea .- Investing ro o fto p so la r energy infra struc ture sa ves a lm o st $80,000 elec tric ity b ill pa ym ent per m o nth fo r so m e zip c o des. T he m a ps illustra te the fa c t tha t b y fa c ilita ting ro o f so la r insta lla tio ns in DAC c o m m unities in Lo s Angeles Co unty, the po tentia l energy o utput is equa lly pro po rtio na l to wha t they c o nsum e fro m the grid no w. W e rec o m m end tha t educ a tio na l to o lkits b e develo ped to increa se a wa reness a nd tha t LA Co unty develo p a n expedited pro c ess fo r so la r energy insta lla tio ns. Prio ritizing so la r energy insta lla tio ns c a n ha ve num ero us po sitive externa lities to a llo w renewa b le energy infra struc ture to gro w in residentia l, c o m m erc ia l a nd industria l zo nes.

Data SourcesLIHT C 2010 fro m Offic e o f Po lic y Develo pm ent a nd R esea rc h., U.S . HUDLA Co unty S o la r Ma p 2010 fro m Ma rk Greninger, LA Co unty Interna l S ervic es Depa rtm ent Ca lEnviro S c reen3.0 fro m Ca lifo rnia Enviro nm enta l Pro tec tio n Agenc yCity o f LA Avera ge m o nthly residentia l energy usa ge b y zip c o de fro m LADW P

LegendFinal_LIHTC_with_solar_in_DAC

DAC in LA County0-70%

Percentile71-75%76-80%81-85%86-90%91-95%96-100%

LIHTC parcelskWh

!( 0+!( 50+!( 150+!( 300+!( 500+

Low-Income Housing Tax Credit Parcelsin Disadvantage Communities

Solar Energy Potential of Low-Income Housing Tax Credit Parcels in Disadvantaged Communities in LA County

Monthly Solar Energy Output per Zip Code

LegendkW_month

.000000 - 369.000000

369.000001 - 1176.700000

1176.700001 - 2476.400000

2476.400001 - 4387.000000

4387.000001 - 8835.500000

0 6 123Miles

0 7 143.5Miles

City o f LA's R a tio o f S o la r Energy to R esidentia l Co nsum ptio n

City o f LA's Mo ney S a ved

LegendCityLASolarMap

usage_mon

137760.000000 - 225792.000000

225792.000001 - 313824.000000

313824.000001 - 464352.000000

464352.000001 - 714336.000000

714336.000001 - 1274112.000000

LegendCityLASolarMap

Sum_monthly_saving / none

.00000000 - 114.668800

114.668801 - 488.096800

488.096801 - 1104.44160

1104.44161 - 2437.46640

2437.46641 - 4395.88880

Mena Abdul-AhadKam Fung Lau

Refugio Jesus Torres-CamposAdvisor: Courtney Knapp, Ph.D., AICP

Using City o f LA a s a n exa m ple, we use a residentia l energy c o nsum ptio n in 2010 to sho w the effic ienc y o f so la r pa nels,

Result

Source: City of LA Average Monthly Residential Energy Usage by Zip Code from LADWP

Sources: LIHTC 2010

LA County Solar Map

CalEnviroScreen3.0

Source: LA County Solar Map 2010

City of LA Average Monthly Residential Energy Usage by Zip Code

Source: LA County Solar Map 2010

City of LA Average Monthly Residential Energy Usage by Zip Code