We're looking at a new-build project and obviously the house will be well insulated and consume as little energy as possible.
The site has the potential for solar PV and thermal, small-scale hydro and wind.
Ignoring an ROI analysis of each technology, and given that we'll be spending some money on grid-supplied electricty anyway.
If I focus on climate impact rather than my electricity spendaspend over time, should I support a 100% green-energy provider like PurePlanet instead of generating my own power?
Any kit I buy to generate power will have its own carbon footprint including manufacture and shipping.
I assume that the greenest of green energy generators are those that operate at massive scale - monster wind turbine versus a handful of solar panels on my roof.
Has anyone done that kind of comparison? If so, I'd welcome any pointers on bringing myself up to speed on how to evaluate this kind of back-to-back test based on CO2 rather than cash.