Info, news & debate
Utilities
Heating old buildings with heat pumps
It looks as though heat pumps are going to provide a lot more of our heating in the future – although there has been some controversy about how well they work in old buildings. Heat pump specialist John Cantor answers some of those concerns.
Why are there thousands of empty flights polluting our skies?
18,000 empty planes will fly across Europe in early 2022. These flights will release 422,280 tonnes of greenhouse gases. Neither the EU nor Lufthansa seems likely to back down.
Things to think about when considering an air source heat pump
We cover ground-source heat pumps more than air-source heat pumps in our topic introduction, so here’s some additional information about air-source heat pumps from our advisor John Cantor:
How to support anaerobic digestion for biogas and compost in communities
SOURCE turns food waste into energy, fertiliser and compost to grow healthy crops and create local jobs – in the heart of our cities!
How to buy second-hand solar panels
In early October 2021 I was teaching a series of workshops for The Brighton Permaculture Trust. One of these was a solar battery half-day workshop which I believe went very well, giving people an introduction to further solar courses. The other workshop was about woodland management; there will be more in 2022. Those people who …
Stop greenwashing of aviation: 5. E-fuels
Over five weeks we’ve published a range of Stay Grounded factsheets about various kinds of techno-greenwashing provided by the aviation industry. Here we look at the potential for synthetic electro-fuels, or e-fuels.
Stop greenwashing of aviation: 4. biofuels
Over five weeks we’re publishing a range of Stay Grounded factsheets about various kinds of techno-greenwashing provided by the aviation industry. This one is about the promise of biofuels.
Stop greenwashing of aviation: 3. hydrogen flight
Over five weeks we’re publishing a range of Stay Grounded factsheets about various kinds of techno-greenwashing provided by the aviation industry. Here we look at the promise of hydrogen-powered flight.
Stop greenwashing of aviation: 2. electric flight
Over five weeks we’re publishing a range of Stay Grounded factsheets about various kinds of techno-greenwashing provided by the aviation industry. Here we look at the promise of electric-powered flight.
Building the new economy with mutual credit in Costa Rica
Here’s a conversation with Emmanuel Savard, co-founder of a group in Costa Rica that’s looking at providing all the essentials of life – food production, housing and energy – for their town via regenerative, non-extractive, sustainable, community-based exchange and investment models.
Stop greenwashing of aviation: 1. efficiency improvements
Over the next five weeks we’ll be publishing a range of Stay Grounded factsheets about various kinds of techno-greenwashing provided by the aviation industry. We’d like to help expose the greenwashing of the aviation industry. First up – efficiency improvements: the lie that aviation can become carbon-neutral via ever-greater aircraft efficiency, reducing the need for …
The problem with COP26
The IPCC recently conducted a study into the combined effects of all the agreed targets of the countries taking part in the ongoing COP talks. Tucked away in the report is this: “The available NDCs of all 191 Parties taken together imply a sizable increase in global GHG emissions in 2030 compared to 2010, of …
Introducing the Velojuicer – pedal-powered apple scratter
Here is an in-depth look at the Velojuicer, our pedal-powered apple juicer. A lightweight, mobile, all-in-one machine that scrats, presses, and juices apples using only human power and a bit of good humour.
Repairing an off-grid wind and solar electrical system
We recently blogged about a project: ‘rebuilding a home, and changing the surrounding fields from dead agricultural land into an oasis of natural life’ – as well as building an off-grid electrical and heating system. Here’s the next in the series – about repairing an off-grid wind and solar electrical system.
Composting toilets and city flats: do they match?
Composting toilets are a great choice for low-impact living — for remote or off-grid homes, for self-contained homes, for boats, for camper vans. That much is certain. But is the ‘revolootion’ possible if you’re renting out a flat? With no garden, no plot of land to call your own, does a composting toilet make any …
Can burning biomass be sustainable?
“Burning biomass is just another path to environmental destruction,” claims a recent article in The Ecologist. Really? Simon Fairlie, who has blithely been burning biomass for the last 50 years, investigates.
£3.3 trillion fossil fuels subsidies by G20 countries since Paris Climate Agreement
All governments, including the UK, are telling us that they’re laser-focused on reducing carbon emissions. How are they doing? The chart above shows how they’re doing (source: Our World in Data). There’s a tiny flatline around 2020, but that’s because of the Covid lockdowns.
Community energy, mutual credit and the mutualist economy
This is the third part of an interview with Jon Halle of Sharenergy, about the prospects for keeping energy production local and mutualised. Here we talk about community energy, mutual credit and mutualisation of the economy.
Building your own sustainable future
Hi. I’m Andy Reynolds – author, instructor, forester, promoter of self-reliance, and for the last few years I have been reflecting on our project’s progression, as it seems to have reached the stage of early maturity. The project – rebuilding a home, and changing the surrounding fields from dead agricultural land into an oasis of …
Keeping energy production local and mutualised: Jon Hallé of Sharenergy, Part 2
This is the second part of an interview with Jon Halle of Sharenergy, about the prospects for keeping energy production local and mutualised. We talk about community energy, Energy Local and the Big Solar Co-op.