Sustainable Living Stack Exchange
Sustainable Living Stack Exchange

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Why create green hydrogen using renewable energy? Why not directly use electricity from Renewable sources?

We generate "green hydrogen" using electrolysis of water which is powered by Renewable energy sources like Solar Panels, Wind mills, Hydro power etc. When we obtain such hydrogen and store it for use later on to generate electricity, the output can…
krishan sai
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Is it more ecological to take a diesel ferry or drive an EV the longer route?

I'm trying to figure out my daily dilemma: whether it's less polluting to take a diesel ferry that hops me over the river (roughly 160 m) or to drive my electric vehicle (EV) on a 15 km detour to take the nearest bridge? Ferry Ships consume a ton…
adamsfamily
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I'm in England, and want to move to a time-of-use electricity tariff, how do I get an appropriate meter fitted?

I'm in England, and currently on a single-price electricity tariff, that's measured by a (very) old-style electricity meter (mine says "property of Eastern Electricity Board" on it, so it's well over 20 years old). After my previous question on how…
410 gone
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Efficiency of car-sized vehicles running on train tracks

New Zealand doesn't have particularly advanced technology for its railroads, but I have seen pickup trucks that have wheels that can run on railroad tracks as well as a separate set of wheels with tyres for driving on the road. I think they are used…
Highly Irregular
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Is there such a thing as safe and green incinerators?

Is there such a thing as safe and green incinerators? Do those cutting-edge incinerators in developed countries like Sweden emit pollutants in quantities that can negatively affect human health and deteriorate the environment (GHG aside)? If it's a…
Sergey Zolotarev
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Radiative Cooling for Residential

I've seen a lot of references to films which radiate heat from an underlying surface out into space. For…
Dark Falcon
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What quantity of basalt would power NYC with power for a day?

Some companies are refitting steam power stations to hot basalt, where many tons of rocks are heated to 750°C by wind power and the thermal energy is used to generate steam in power stations. How much basalt can supply 11,000 megawatt-hours, enough…
DeltaEnfieldWaid
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Can mealworms form part of a healthy diet in the UK?

Mealworms for birds are a cheap form of nutrition. Could they be processed at home in a way to make them healthy? Dried mealworms are sold as bird food for just under £8/Kg in the UK or $3/Kg from China. This is mostly a dehydrated fat protein…
Simon
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What is the fair-market value of the Solar System installed by Solar City in 2013?

I live in the Maryland suburbs of Washington DC. On December 31, 2012, I signed a lease deal with SolarCity (now Tesla) to install solar panels on the roof of my home + associated electrical infrastructure. I would pay $0 down, I would lease the…
Saqib Ali
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How much electricity does 1,000 liters of water per meter of height fallen generate in various hydro generator arrangements?

How would one go about calculating the amount of electricity (kilowatt hour) produced from a quantity of, say, 1,000 liters of water per hour falling from a 20 meter fall through a hydro electric generator turbine? Are there differing hydro electric…
ylluminate
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Does plastic really degrade in a landfill?

There seems to be a lot of debate about whether, and how, plastic degrades in a landfill. There are many different types of plastic, from polypropylene to polystyrene. With this variety, it seems possible that each polymer could have a different…
Adam McKenna
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Which CO2 price would make a real difference?

For context: Sweden is said to have the highest carbon price in the world at €110/ton (source). This price only applies to emissions not covered by the EU ETS (about half) which currently trades at an all-time high of €38/ton (source).  The implicit…
sba222
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Any way for microinverter PV array to power a house when the grid is down?

Suppose I'm already heavily invested in microinverter type solar panels -- with the inverter on the panel on the roof. These comply with UL 1741 and will stop supplying power the moment they see grid power disappear (referred to as anti-islanding…
Harper - Reinstate Monica
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Determining carbon reduction vs cost of various home upgrades

I've done some amount of upgrades to my house to reduce my overall carbon emissions, and reading online there are all kinds of suggestions for doing even more: Replace my natural gas water heater with electric Put solar panels on the roof Buy wind…
Betty Crokker
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Excess solar power

I am wanting to hook up a solar system to my house but don't want to feed back into the grid (for a number of reasons, including legislative bureaucracy and having to change my electricity company). Notwithstanding it may make sense for me to spec…
davidgo
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