Fuel-Free Cooking

Instead of using propane, gas, or charcoal, why not cook a meal with the sun? The GoSun solar cooker is a fuel-free, green way to cook—at the beach, while camping, or just in the backyard. Inventor Patrick Sherwin is a solar energy expert. After disassembling a solar water heater, Patrick noticed the vacuum tubes were still hot enough to reheat his lunch. It inspired the idea for a solar oven. GoSun uses an evacuated glass tube to absorb sunlight and convert it to heat. Just open the reflective panels and angle them toward the sun. It’s so efficient that you can even cook on a cloudy day, it just requires a bit more time. Cut food into small pieces to cook more quickly and better fit the tray. We suggest lining the tray with aluminum foil or parchment paper for easier cleanup, too, and using a fork or tongs to remove food. Even though the outer glass is cool to the touch, the inside can reach up to 550°F. Take GoSun tailgating, on a picnic, or on a hike. All you need for a hot meal is a little sun.

GoSun

Solar Cooker

Fuel-Free Cooking

Instead of using propane, gas, or charcoal, why not cook a meal with the sun? The GoSun solar cooker is a fuel-free, green way to cook—at the beach, while camping, or just in the backyard. Inventor Patrick Sherwin is a solar energy expert. After disassembling a solar water heater, Patrick noticed the vacuum tubes were still hot enough to reheat his lunch. It inspired the idea for a solar oven. GoSun uses an evacuated glass tube to absorb sunlight and convert it to heat. Just open the reflective panels and angle them toward the sun. It’s so efficient that you can even cook on a cloudy day, it just requires a bit more time. Cut food into small pieces to cook more quickly and better fit the tray. We suggest lining the tray with aluminum foil or parchment paper for easier cleanup, too, and using a fork or tongs to remove food. Even though the outer glass is cool to the touch, the inside can reach up to 550°F. Take GoSun tailgating, on a picnic, or on a hike. All you need for a hot meal is a little sun.
Crowdfunded
Independent Maker
Sustainable Living
Tech & Innovation

Grommet Launch Conversation

Grommet Launch Conversation

  • Patrick
    Patrick

    Hello everyone! I'm proud to introduce GoSun to The Grommet. I'd be happy to answer any questions you have!

  • Mike
    Mike – Grommet Team
    4/29/2016 1:56 PM

    You have a lot of experience in solar energy, how did you get idea for the solar cooker

  • Patrick
    Patrick – Special Guest
    4/29/2016 1:57 PM

    I'm always trying to find ways to get solar power into our lives. I decommissioned a solar water heater and instead of tossing it in the dumpster, I started tinkering. There was a lot of heat still in the evacuated tube so I thought... I wonder if this could make some sausages? Yup, it did.

  • Mike
    Mike – Grommet Team
    4/29/2016 1:57 PM

    Why should people switch to GoSun as a grill?

  • Patrick
    Patrick – Special Guest
    4/29/2016 1:58 PM

    GoSun is super easy to use so your mind is not occupied with cooking. Being so portable, it's a great companion for outings. Finally, GoSun is leading an effort to bring fuel-free technology to those stuck cooking with wood and charcoal on a daily basis. Your support helps us grow in these emerging markets.

  • steven
    steven
    5/2/2016 10:47 AM

    how breakable is it?

    what does it weigh?

    how do you clean it?

    how do you know when your food is cooked?

  • Patrick
    Patrick – Special Guest
    5/2/2016 11:01 AM

    @steven It's made of tough borosilicate glass (similar to Pyrex) and the circular form makes it very strong. The entire package weighs about 7 pounds. 90% of the mess remains in the stainless steel tray so cleaning is easy. To clean grease build up after many uses, a scrub pad is attached to the Cooking Tray and plunged inside the tube. Finally, you know when food is cooked by both the steam pouring out and the smell - cooked food always smells different. Pulling the tray out for a glance anytime is also fine.

  • Martha
    Martha
    5/2/2016 10:52 AM

    Love, love, love the idea. Can you tell us about how long it might take to cook a few things on a sunny day? Recognizing that might be the ideal situation, and clouds or overcast sky might slow things down a bit, can you give us a ballpark idea? Great invention!!!

  • Patrick
    Patrick – Special Guest
    5/2/2016 11:05 AM

    @Martha thanks! In full sun, the GoSun Sport takes 30 minutes to cook anything from raw meat to root veggies. Breads and lighter dishes can be done in 20 minutes. Full sun can be found even in the winter but lower sun angle (early morning, late afternoon or winter sky) will slow things down as will cloud cover. I've been able to make a cookie log on a day with partial cloud coverage in 40 minutes - slight overcast is about the same.

  • Clarissa
    Clarissa
    5/2/2016 11:01 AM

    Fantastic!

    I am ready to buy but have three questions

    1) I backpack and I am interested in this, can you please provide dimensions and weight?

    2) I camp and often use dehydrated food which simply requires boiling water. Would there be a problem with putting some sort of metal container of water (with vents for the steam)into the unit that holds the food and boiling water instead

    3) Can you consider a water boiler option for those of us who camp and want to boil water for either drinks or adding to dehydrated food?

  • Patrick
    Patrick – Special Guest
    5/2/2016 11:11 AM

    @Clarissa great questions. GoSun is going to be a little heavier than other backpack stove options but it is a lot light in other ways :) We are launching the GoSun Brew accessory this summer to allow 14 OZ of water to slow boil in about 40 minutes (water is slow to heat up). The Brew will be perfect for the needs you're describing.

    Here's the dimensions

    Dry Weight: 7 lbs (3.18kg)

    Oven Volume: 40oz (1.2L) fluid or up to 3 lbs (1.4kg) of food

    Oven Dimensions: 2.7” (7.0cm) outside diameter, 2.1” (5.4cm) inside diameter , 24” (61cm) length

    Unit Open Size: 24” (61cm) long x 16” (41cm) tall x 12” (30cm) wide

    Unit Closed Size: 24” (61cm) long x 8” (20cm) tall x 5” (13cm) wide

  • Clarissa
    Clarissa
    5/2/2016 11:15 AM

    @Patrick Fantastic

    I agree it is a little heavier but I really dislike the cans of gas associated with camp stoves...so this is better

    Also this will be great for car camping

    One more question, sorry, if I buy the stove now for food I can purchase the brew accessory separately when it comes out?

  • Patrick
    Patrick – Special Guest
    5/2/2016 11:50 AM

    @Clarissa yes. We expect the Brew will be available in late summer. As an accessory for the GoSun Sport, we estimate it will cost about $40.

  • Katherine
    Katherine
    5/2/2016 11:19 AM

    Will meat brown? Is there a way to cook rice?

  • Patrick
    Patrick – Special Guest
    5/2/2016 11:49 AM

    @Katherine yes, you can get meats to brown. You'll want to drain the juices once or twice to remove the moisture. GoSun definitely gets hot enough to brown/carmelize. Yes, we have cooked rice and other grains. Adding 3/4 of the normal amount of water usually does the trick.

  • Nancy
    Nancy
    5/2/2016 11:54 AM

    It seems like an awesome idea except I am picturing a very long meal if you need to cook multiple dishes.. How does that work?

  • Patrick
    Patrick – Special Guest
    5/2/2016 12:10 PM

    @Nancy you can feed two people every 30 minutes with the GoSun Sport. When making side dishes, you can feed appetizers to 4-5 people with each dish.

  • Darren
    Darren
    5/2/2016 11:55 AM

    Patrick, given it's size and the space it would take up in most packs may I suggest a molle compatible carrying case simillar in design to a Maxpedition bottle holder? This way it can be strapped onto multiple pack designs and by using Cordura in common pack colors such as olive drab, coyote tan, charcoal it would appeal to a wide array of the buyers looking for cooking options. Love your concept.

  • Patrick
    Patrick – Special Guest
    5/2/2016 12:11 PM

    @Darren thanks for the advice.

  • Kimberly
    Kimberly
    5/2/2016 12:00 PM

    Are there a instruction/recipe booklet included? I assume you have to adjust its position to capture the rays during the cooking time?

  • Patrick
    Patrick – Special Guest
    5/2/2016 12:12 PM

    @Kimberly yes, the package includes a User Manual and a Cook Booklet. We have a large community of users (about 3,000) who post on a community group on Facebook with new recipes every day.

  • Ryan
    Ryan – Grommet Team
    5/2/2016 12:37 PM

    @Kimberly In addition to the GoSun community, you can also find cooking time instructions by clicking here.

  • Linda
    Linda
    5/2/2016 12:30 PM

    Pretty cool-price point seems a little high to me-but I have nothing to compare it to so its originality may be what I'm paying for. Still, a little too costly for a non-camper like me who would just like it as a once in awhile gadget. Hopefully this concept will become more affordable. I have been in countries where, if it was, it would be reach a huge amount of folks and do so much good!

  • Patrick
    Patrick – Special Guest
    5/2/2016 1:01 PM

    @Linda thanks for sharing. We are working on a Social Enterprise model to serve those in need of this technology in developing world markets. We're off to a good start thanks to a grant from the United Nations Foundation - Global Alliance for Clean Cookstoves.

  • Linda
    Linda
    5/2/2016 1:10 PM

    @Patrick Now that makes me more inclined to buy-just to support your idea and company! Thanks for sharing!

  • Patrick
    Patrick – Special Guest
    5/2/2016 2:25 PM

    @Linda thanks! Every bit seriously helps. Besides the UN Grant we've been funding our GoSun Global efforts with our limited start-up capital. With more supporters we can put more ovens on the ground.

  • Darren
    Darren
    5/2/2016 12:42 PM

    Is this unit design compatible with cooking trail food such as Mountain House meals that require water in the re-hydration process or is there an additional container needed to cook these types of meals?

  • Patrick
    Patrick – Special Guest
    5/2/2016 1:03 PM

    @Darren we are releasing an accessory designed for heating 14OZ of fluid this summer. With the Brew, the GoSun Sport will be great for those dehydrated meals as well.

  • Christina
    Christina
    5/2/2016 1:40 PM

    Smokey the Bear must be so proud! What a GREAT concept and device. I will definitely be recommending it to my circle.

  • Patrick
    Patrick – Special Guest
    5/2/2016 2:26 PM

    @Christina Smokey the Bear is a good friend :) No flames, no fuels, no worries.

  • Lauren
    Lauren
    5/2/2016 5:46 PM

    Hi Patrick, Do you have any photos of the Sports Solar Cooker Pro Pack? I see that it comes with two tubes...but haven't seen if they are used at the same time to double the amount of food cooked simultaneously? Such a cool product! I'm going to be spending a lot of time in the desert this summer and this may work for us.

  • Ryan
    Ryan – Grommet Team
    5/2/2016 6:15 PM

    @Lauren Hi, thanks for the note. The Pro Pack comes with two tubes but GoSun is designed to use one at a time. For example, you may cook breakfast in one tube and can't clean it immediately, so you'll use the second tube for easy cooking for lunch until you get your first tube cleaned. Hope that helps!

  • Patrick
    Patrick – Special Guest
    5/2/2016 6:43 PM

    @Ryan, @ Lauren, for clarity, we call the oven itself a tube and the implement that brings food in and out of the oven is the Cooking Tray. The ProPack comes with two Cooking Trays - i.e. 0ne for sweet, one for savory.

  • Michael
    Michael
    5/2/2016 9:49 PM

    Really like the concept, I was turned off by the extremely high price. Thanks.

The launch day conversation has ended. Please direct further questions about this Grommet to our Community Experience Team.

 

GoSun

Solar Cooker

Fuel-Free Cooking

Instead of using propane, gas, or charcoal, why not cook a meal with the sun? The GoSun solar cooker is a fuel-free, green way to cook—at the beach, while camping, or just in the backyard.

Inventor Patrick Sherwin is a solar energy expert. After disassembling a solar water heater, Patrick noticed the vacuum tubes were still hot
enough to reheat his lunch. It inspired the idea for a solar oven.

GoSun uses an evacuated glass tube to absorb sunlight and convert it to heat. Just open the reflective panels and angle them toward the sun. It’s so efficient that you can even cook on a cloudy day, it just requires a bit more time.

Cut food into small pieces to cook more quickly and better fit the tray. We suggest lining the tray with aluminum foil or parchment paper for easier cleanup, too, and using a fork or tongs to remove food. Even though the outer glass is cool to the touch, the inside can reach up to 550°F.

Take GoSun tailgating, on a picnic, or on a hike. All you need for a hot meal is a little sun.
Read More Read Less
Odd shape. Fuel free. This oven is amazing.

Grommet Launch Conversation

  • Patrick
    Patrick

    Hello everyone! I'm proud to introduce GoSun to The Grommet. I'd be happy to answer any questions you have!

  • Mike
    Mike – Grommet Team
    4/29/2016 1:56 PM

    You have a lot of experience in solar energy, how did you get idea for the solar cooker

  • Patrick
    Patrick – Special Guest
    4/29/2016 1:57 PM

    I'm always trying to find ways to get solar power into our lives. I decommissioned a solar water heater and instead of tossing it in the dumpster, I started tinkering. There was a lot of heat still in the evacuated tube so I thought... I wonder if this could make some sausages? Yup, it did.

  • Mike
    Mike – Grommet Team
    4/29/2016 1:57 PM

    Why should people switch to GoSun as a grill?

  • Patrick
    Patrick – Special Guest
    4/29/2016 1:58 PM

    GoSun is super easy to use so your mind is not occupied with cooking. Being so portable, it's a great companion for outings. Finally, GoSun is leading an effort to bring fuel-free technology to those stuck cooking with wood and charcoal on a daily basis. Your support helps us grow in these emerging markets.

  • steven
    steven
    5/2/2016 10:47 AM

    how breakable is it?

    what does it weigh?

    how do you clean it?

    how do you know when your food is cooked?

  • Patrick
    Patrick – Special Guest
    5/2/2016 11:01 AM

    @steven It's made of tough borosilicate glass (similar to Pyrex) and the circular form makes it very strong. The entire package weighs about 7 pounds. 90% of the mess remains in the stainless steel tray so cleaning is easy. To clean grease build up after many uses, a scrub pad is attached to the Cooking Tray and plunged inside the tube. Finally, you know when food is cooked by both the steam pouring out and the smell - cooked food always smells different. Pulling the tray out for a glance anytime is also fine.

  • Martha
    Martha
    5/2/2016 10:52 AM

    Love, love, love the idea. Can you tell us about how long it might take to cook a few things on a sunny day? Recognizing that might be the ideal situation, and clouds or overcast sky might slow things down a bit, can you give us a ballpark idea? Great invention!!!

  • Patrick
    Patrick – Special Guest
    5/2/2016 11:05 AM

    @Martha thanks! In full sun, the GoSun Sport takes 30 minutes to cook anything from raw meat to root veggies. Breads and lighter dishes can be done in 20 minutes. Full sun can be found even in the winter but lower sun angle (early morning, late afternoon or winter sky) will slow things down as will cloud cover. I've been able to make a cookie log on a day with partial cloud coverage in 40 minutes - slight overcast is about the same.

  • Clarissa
    Clarissa
    5/2/2016 11:01 AM

    Fantastic!

    I am ready to buy but have three questions

    1) I backpack and I am interested in this, can you please provide dimensions and weight?

    2) I camp and often use dehydrated food which simply requires boiling water. Would there be a problem with putting some sort of metal container of water (with vents for the steam)into the unit that holds the food and boiling water instead

    3) Can you consider a water boiler option for those of us who camp and want to boil water for either drinks or adding to dehydrated food?

  • Patrick
    Patrick – Special Guest
    5/2/2016 11:11 AM

    @Clarissa great questions. GoSun is going to be a little heavier than other backpack stove options but it is a lot light in other ways :) We are launching the GoSun Brew accessory this summer to allow 14 OZ of water to slow boil in about 40 minutes (water is slow to heat up). The Brew will be perfect for the needs you're describing.

    Here's the dimensions

    Dry Weight: 7 lbs (3.18kg)

    Oven Volume: 40oz (1.2L) fluid or up to 3 lbs (1.4kg) of food

    Oven Dimensions: 2.7” (7.0cm) outside diameter, 2.1” (5.4cm) inside diameter , 24” (61cm) length

    Unit Open Size: 24” (61cm) long x 16” (41cm) tall x 12” (30cm) wide

    Unit Closed Size: 24” (61cm) long x 8” (20cm) tall x 5” (13cm) wide

  • Clarissa
    Clarissa
    5/2/2016 11:15 AM

    @Patrick Fantastic

    I agree it is a little heavier but I really dislike the cans of gas associated with camp stoves...so this is better

    Also this will be great for car camping

    One more question, sorry, if I buy the stove now for food I can purchase the brew accessory separately when it comes out?

  • Patrick
    Patrick – Special Guest
    5/2/2016 11:50 AM

    @Clarissa yes. We expect the Brew will be available in late summer. As an accessory for the GoSun Sport, we estimate it will cost about $40.

  • Katherine
    Katherine
    5/2/2016 11:19 AM

    Will meat brown? Is there a way to cook rice?

  • Patrick
    Patrick – Special Guest
    5/2/2016 11:49 AM

    @Katherine yes, you can get meats to brown. You'll want to drain the juices once or twice to remove the moisture. GoSun definitely gets hot enough to brown/carmelize. Yes, we have cooked rice and other grains. Adding 3/4 of the normal amount of water usually does the trick.

  • Nancy
    Nancy
    5/2/2016 11:54 AM

    It seems like an awesome idea except I am picturing a very long meal if you need to cook multiple dishes.. How does that work?

  • Patrick
    Patrick – Special Guest
    5/2/2016 12:10 PM

    @Nancy you can feed two people every 30 minutes with the GoSun Sport. When making side dishes, you can feed appetizers to 4-5 people with each dish.

  • Darren
    Darren
    5/2/2016 11:55 AM

    Patrick, given it's size and the space it would take up in most packs may I suggest a molle compatible carrying case simillar in design to a Maxpedition bottle holder? This way it can be strapped onto multiple pack designs and by using Cordura in common pack colors such as olive drab, coyote tan, charcoal it would appeal to a wide array of the buyers looking for cooking options. Love your concept.

  • Patrick
    Patrick – Special Guest
    5/2/2016 12:11 PM

    @Darren thanks for the advice.

  • Kimberly
    Kimberly
    5/2/2016 12:00 PM

    Are there a instruction/recipe booklet included? I assume you have to adjust its position to capture the rays during the cooking time?

  • Patrick
    Patrick – Special Guest
    5/2/2016 12:12 PM

    @Kimberly yes, the package includes a User Manual and a Cook Booklet. We have a large community of users (about 3,000) who post on a community group on Facebook with new recipes every day.

  • Ryan
    Ryan – Grommet Team
    5/2/2016 12:37 PM

    @Kimberly In addition to the GoSun community, you can also find cooking time instructions by clicking here.

  • Linda
    Linda
    5/2/2016 12:30 PM

    Pretty cool-price point seems a little high to me-but I have nothing to compare it to so its originality may be what I'm paying for. Still, a little too costly for a non-camper like me who would just like it as a once in awhile gadget. Hopefully this concept will become more affordable. I have been in countries where, if it was, it would be reach a huge amount of folks and do so much good!

  • Patrick
    Patrick – Special Guest
    5/2/2016 1:01 PM

    @Linda thanks for sharing. We are working on a Social Enterprise model to serve those in need of this technology in developing world markets. We're off to a good start thanks to a grant from the United Nations Foundation - Global Alliance for Clean Cookstoves.

  • Linda
    Linda
    5/2/2016 1:10 PM

    @Patrick Now that makes me more inclined to buy-just to support your idea and company! Thanks for sharing!

  • Patrick
    Patrick – Special Guest
    5/2/2016 2:25 PM

    @Linda thanks! Every bit seriously helps. Besides the UN Grant we've been funding our GoSun Global efforts with our limited start-up capital. With more supporters we can put more ovens on the ground.

  • Darren
    Darren
    5/2/2016 12:42 PM

    Is this unit design compatible with cooking trail food such as Mountain House meals that require water in the re-hydration process or is there an additional container needed to cook these types of meals?

  • Patrick
    Patrick – Special Guest
    5/2/2016 1:03 PM

    @Darren we are releasing an accessory designed for heating 14OZ of fluid this summer. With the Brew, the GoSun Sport will be great for those dehydrated meals as well.

  • Christina
    Christina
    5/2/2016 1:40 PM

    Smokey the Bear must be so proud! What a GREAT concept and device. I will definitely be recommending it to my circle.

  • Patrick
    Patrick – Special Guest
    5/2/2016 2:26 PM

    @Christina Smokey the Bear is a good friend :) No flames, no fuels, no worries.

  • Lauren
    Lauren
    5/2/2016 5:46 PM

    Hi Patrick, Do you have any photos of the Sports Solar Cooker Pro Pack? I see that it comes with two tubes...but haven't seen if they are used at the same time to double the amount of food cooked simultaneously? Such a cool product! I'm going to be spending a lot of time in the desert this summer and this may work for us.

  • Ryan
    Ryan – Grommet Team
    5/2/2016 6:15 PM

    @Lauren Hi, thanks for the note. The Pro Pack comes with two tubes but GoSun is designed to use one at a time. For example, you may cook breakfast in one tube and can't clean it immediately, so you'll use the second tube for easy cooking for lunch until you get your first tube cleaned. Hope that helps!

  • Patrick
    Patrick – Special Guest
    5/2/2016 6:43 PM

    @Ryan, @ Lauren, for clarity, we call the oven itself a tube and the implement that brings food in and out of the oven is the Cooking Tray. The ProPack comes with two Cooking Trays - i.e. 0ne for sweet, one for savory.

  • Michael
    Michael
    5/2/2016 9:49 PM

    Really like the concept, I was turned off by the extremely high price. Thanks.

The launch day conversation has ended. Please direct further questions about this Grommet to our Community Experience Team.