Solar Panel?

8 4x10 PANEL SOLAR POOL HEATER HEATING KIT 2 HEAD NEW
$1,745.00
Time Remaining: 1h 53m
Buy It Now for only: $1,975.00

MIDWEST SOLAR POOL COVER HEAVY HEATING THERMOTEX BLANKET 18 X 36 3 YR WARRANTY
$80.70
Time Remaining: 23d 4h 41m
Buy It Now for only: $80.70

6 4x12 PANEL SOLAR POOL HEATER HEATING KIT 15 HEAD
$1,395.00
Time Remaining: 1h 53m
Buy It Now for only: $1,575.00

Solar Panel Repair Kit For Sungrabber Solar Panels
$12.95
Time Remaining: 20d 1h 29m
Buy It Now for only: $12.95

7 4x12 PANEL SOLAR POOL HEATER HEATING KIT 2 HEAD NEW
$1,675.00
Time Remaining: 1h 54m
Buy It Now for only: $1,865.00

12 4x12 PANEL SOLAR POOL HEATER HEATING KIT 2 HEAD
$2,850.00
Time Remaining: 1h 54m
Buy It Now for only: $3,150.00

MIDWEST SOLAR POOL COVER HEAVY HEATING THERMOTEX BLANKET 16 X 36 3 YR WARRANTY
$79.99
Time Remaining: 28d 23h 44m
Buy It Now for only: $79.99

8 4x12 PANEL SOLAR POOL HEATER HEATING KIT 2 HEAD NEW
$1,795.00
Time Remaining: 1h 54m
Buy It Now for only: $1,995.00

4 x 20 Sungrabber Pool Solar Replacement ING Panels
$151.95
Time Remaining: 17d 3h 12m
Buy It Now for only: $151.95

10 4x10 PANEL SOLAR POOL HEATER HEATING KIT 2 HEAD
$2,195.00
Time Remaining: 1h 54m
Buy It Now for only: $2,450.00

6 4x12 PANEL SOLAR POOL HEATER HEATING KIT 2 HEAD NEW
$1,495.00
Time Remaining: 1h 55m
Buy It Now for only: $1,650.00

GAME SolarPRO AquaQuik Solar Heater Swimming Pool Heater w Bypass Kit 3pc Kit
$252.95
Time Remaining: 1d 21h 44m
Buy It Now for only: $252.95

10 4x12 PANEL SOLAR POOL HEATER HEATING KIT 2 HEAD NEW
$2,250.00
Time Remaining: 1h 55m
Buy It Now for only: $2,575.00

MIDWEST SOLAR POOL COVER HEAVY HEATING THERMOTEX BLANKET 20 X 40 3 YR WARRANTY
$101.95
Time Remaining: 26d 3h 57m
Buy It Now for only: $101.95

20 Eco Saver Swimming Pool Solar Heater Panel in the Factory Box with Warranty
$73.44 (7 Bids)
Time Remaining: 5h 59m

4x20 Swimming Pool Solar Panel Heater with Diverter Kit for Above Grd Pools
$153.95 (1 Bid)
Time Remaining: 6h 27m

4x20 Swimming Pool Solar Heating Panel w Coupler Made IN USA
$149.00
Time Remaining: 10d 1h 29m
Buy It Now for only: $149.00

DC 12V Electric Centrifugal Water Pump 103 GPH P 38I
$24.80 (2 Bids)
Time Remaining: 7h 20m

Outdoor Yard Sonic Solar Mole Mouse Mice Gopher Rodent Pest Repeller New
$12.89
Time Remaining: 14d 23h 2m
Buy It Now for only: $12.89

20 Eco Saver Swimming Pool Solar Heater Panel in the Factory Box with Warranty
$41.00 (3 Bids)
Time Remaining: 1d 2h 54m

ECO SAVER 20 FT SOLAR HEATING PANEL SYSTEM FOR ABOVE GROUND POOL
$31.00 (5 Bids)
Time Remaining: 2d 9m

ANNIN SOLAR LIGHT FOR FLAGPOLES APRIL 2011 MODEL 3 BATTERIES BRIGHTER LIGHTS
$68.00
Time Remaining: 23d 7h 6m
Buy It Now for only: $68.00

Above ground pool Solar Panels 2 2 x 20
$75.00
Time Remaining: 2d 23h 1m

Solar Panel Repair Kit For Sungrabber Solar Panels
$12.95
Time Remaining: 12d 15m
Buy It Now for only: $12.95

Above Ground Pool Solar Heater Best in Industry NEW
$119.00
Time Remaining: 3d 21h 58m
Buy It Now for only: $139.00

4 4x12 PANEL SOLAR POOL HEATER HEATING KIT 2 HEAD NEW
$995.00
Time Remaining: 4d 21h 4m
Buy It Now for only: $1,095.00

CALLA LILY WITH HUMINGBIRDS SOLAR BOUQUET STAKES GARDEN ACCENT LIGHTING
$16.95
Time Remaining: 24d 5h 25m
Buy It Now for only: $16.95

8 4x8 PANEL SOLAR POOL HEATER HEATING KIT 2 HEAD NEW
$1,695.00
Time Remaining: 4d 21h 4m
Buy It Now for only: $1,875.00

Hayward Goldline GLC 2P A Goldline Pool Solar Panel Controller GL 235 New 2012
$238.95
Time Remaining: 5d 9h 3m
Buy It Now for only: $238.95

6 4x8 PANEL SOLAR POOL HEATER HEATING KIT 2 HEAD NEW
$1,395.00
Time Remaining: 4d 21h 5m
Buy It Now for only: $1,575.00

HAYWARD GOLDLINE GLC 2P A Solar Pool Control System Used 2 Seasons Works Great
$115.00
Time Remaining: 5d 2h 40m

NITE GUARD SOLAR PREDATOR PROTECTION DEER REPELLENT
$74.88
Time Remaining: 6d 4h 42m
Buy It Now for only: $74.88

Above Ground Pool Solar Heater Best in Industry NEW
$119.00
Time Remaining: 5d 17h 37m
Buy It Now for only: $139.00

Panel Repair Kit Pool Solar Panel FREE SHIPPING
$12.90
Time Remaining: 19d 20h 36m
Buy It Now for only: $12.90

GAME SolarPRO AquaQuik Swimming Pool Solar Heater Heating Solar Pro 4512
$98.99
Time Remaining: 5d 20h 43m
Buy It Now for only: $117.95

Solar Powered 20 led butterfly leafage string lights
$9.99
Time Remaining: 38m

Solar Sun Ring Solar Cover For Swimming Pool Heating
$17.87
Time Remaining: 24d 18h 38m
Buy It Now for only: $17.87

Westinghouse Solar Landscape LED Landscaping Light NEW
$25.00 (2 Bids)
Time Remaining: 54m

Solar Power 100 LED String Fairy Lights Outdoor Party
$15.79
Time Remaining: 9h 24m
Buy It Now for only: $15.79

77 Solar Powered Decorative Garden Pathway Lamp Post with 4 Ultra Bright LEDs
$46.67
Time Remaining: 1h 31m

1 PC Outdoor Garden 3 LED Solar Spot Flood Landscape Light led spotlight lamp
$7.51 (12 Bids)
Time Remaining: 1h 38m

4x20 Solar Swimming Pool Heater Add on Panel couplers
$147.75
Time Remaining: 17d 19h 7m
Buy It Now for only: $147.75

NEW Yard Solar Power Ultrasonic Sonic Mouse Mice Mole Insect Rodent Repeller
$0.99
Time Remaining: 1h 44m

Jandy iAquaLink Kit with RS PCB Upgrade IQ900 RS
$479.99
Time Remaining: 22h 27m
Buy It Now for only: $479.99

Vonsolar Garden Outdoor 22in Torch Solar Light 3046 X8
$31.19
Time Remaining: 2h 2m

Butterflies Wind Chimes Color Changing Solar Light
$8.33
Time Remaining: 2h 12m

Solar Power Fountain Water Pump Garden Plants Watering
$12.45
Time Remaining: 11d 2h 35m
Buy It Now for only: $12.45

Solar Powered Rock Shaped Outdoor Garden Path Light
$8.49
Time Remaining: 2h 51m

4x20 Swimming Pool Solar Heating Panel Made IN USA
$149.00
Time Remaining: 12d 6h 48m
Buy It Now for only: $149.00

German Shephard Dog With Lantern Garden Solar Light
$21.49
Time Remaining: 2h 51m

Diving Dolphins Wind Chimes Color Changing Solar Light
$8.33
Time Remaining: 2h 51m

Solar Powered 65 Planter Lamp Post w 3 Lanterns NEW
$124.99
Time Remaining: 7d 38m
Buy It Now for only: $124.99

Decorative Cherub Solar Landscape Outdoor Path Light
$16.67
Time Remaining: 2h 52m

New Solar Power 100LED String Fairy Light Xmas Garden Christmas Party
$13.45
Time Remaining: 17d 8h 5m
Buy It Now for only: $13.45

New Light Up Solar Powered Frog on Lily Pad Garden Lawn Ornament Light
$16.49 (1 Bid)
Time Remaining: 2h 52m

Set of 2 Color Changing Solar Powered Garden Path Light
$7.00
Time Remaining: 2h 52m

Solar 60 100 LED Fairy Light String For Xmas Party Wedding Garden Decor 6 Colors
$15.55
Time Remaining: 19d 13h 58m
Buy It Now for only: $15.55

Solar Powered 20 led water column air bubble Lights
$9.99
Time Remaining: 2h 53m

Solar Power Pond Water Pump 135 Solar Panel 5 Watt
$54.99
Time Remaining: 27d 3h 57m
Buy It Now for only: $54.99

60LED 7M Solar Powered Wedding Party String Lights
$9.95
Time Remaining: 2h 54m

4 Mixed Colors Solar Powered Garden String Lights
$9.99
Time Remaining: 2h 55m

New Solar Powered Garden Yard Decor Stake Multi Color Changing LED LightMoon
$11.49
Time Remaining: 4d 5h 58m
Buy It Now for only: $11.49

Black Labrador Dog With Lantern Garden Solar Light
$17.50
Time Remaining: 3h 11m

Above Ground Swimming Solar Pool Heater Kit EcoSaver
$126.99
Time Remaining: 18h 41m
Buy It Now for only: $126.99

Yellow Lab Dog With Lantern Outdoor Garden Solar Light
$17.50
Time Remaining: 3h 11m

1 PC Outdoor Garden 3 LED Solar Spot Flood Landscape Light led spotlight lamp
$6.50 (10 Bids)
Time Remaining: 3h 38m

GLC 2P A Goldline Pool Solar Panel Controls GL 235
$238.95
Time Remaining: 4d 1h 43m
Buy It Now for only: $238.95

WISHING WELL SOLAR WATER FOUNTAIN NEW
$230.00
Time Remaining: 3h 41m

8 Outdoor Garden Solar Post Deck Cap Square Fence Light
$69.99
Time Remaining: 25d 17h 13m
Buy It Now for only: $69.99

3 LED Solar Flagpole Light
$27.95
Time Remaining: 3h 43m
Buy It Now for only: $31.95

7M Colors Solar Powered Green Cable String Light Lamp
$9.94
Time Remaining: 3h 51m

Solar Lily Flower Garden Yard Decor Stake Multi Color Changing LED Light New
$11.49
Time Remaining: 24d 8h 53m
Buy It Now for only: $11.49

2 SOLAR GARDEN COLOR CHANGING LILY LIGHT PARTY
$9.68
Time Remaining: 3h 53m

Kikkerland Rainbowmaker SINGLE Chi Rainbow Maker
$27.99
Time Remaining: 5d 1h 47m
Buy It Now for only: $27.99

Vonsolar Garden Outdoor Eaves Shed Solar Light 2148 X1
$19.50
Time Remaining: 4h 4m

12 x Stainless Steel Color Changing Solar Lights Pathway Lawn Garden Landscape
$29.99 (1 Bid)
Time Remaining: 4h 14m

Solar Powered Patio Umbrella w 16 LED Lights Taupe NEW
$74.99
Time Remaining: 6d 4h 43m
Buy It Now for only: $74.99

14 JOSEPHS STUDIO SOLAR POWERED BIRD BATH ANGEL OUTDOOR GARDEN STATUE
$67.49 (1 Bid)
Time Remaining: 4h 26m

2x20 SUNGRABBER Solar Swimming Pool Heater Replacement Panel for Above Ground
$79.95
Time Remaining: 28d 9h 42m
Buy It Now for only: $79.95

Fairy Solar Water Fountain
$225.00
Time Remaining: 4h 39m
Buy It Now for only: $299.95

Sloar Hummingbird Hanging Basket
$20.00
Time Remaining: 4h 40m
Buy It Now for only: $29.95

SolarPro XD1 Aboveground Swimming Pool Solar Heater 4512 by GAME
$107.97
Time Remaining: 25d 21h 29m
Buy It Now for only: $107.97

Butterfly Solar Hanging Basket
$20.00
Time Remaining: 4h 40m
Buy It Now for only: $29.95

NEW 3 Solar Cattail Spike Light Yard Stake Water Garden Pond Landscape Lighting
$56.86
Time Remaining: 8d 10h 36m
Buy It Now for only: $56.86

One Red Color Cardinal Solar Powered 32 Garden Yard Stake light
$7.00 (3 Bids)
Time Remaining: 4h 51m

How do you connect a solar panel and wind generator in parallel?

I have an ~18v solar panel and a ~15v wind turbine. Sometimes one generates more voltage than the other. How would I get both of them to charge one ~12v battery? I can't just connect them in parallel with diodes, because in that case, only the higher voltage source gets used. Is there a special charge controller circuit that will do this?

Placing diodes in series with each source to the battery would solve your problem. You should use a charge controller on the system to prevent overcharging the battery.
I've put together a relatively simple dump load circuit which diverts excess power to high power resistors. It is part of a wind charging system with inputs from wind, solar, and a DC power supply.