I love this video 😉
I love this video 😉
The Food Forest writes…
This rare and candid interview with David Holmgren, co-originator of the permaculture concept was obtained by Sam Collins during a Permacuture Design Certificate course David taught at The Food Forest in April 2010. David reflects on the future of human occupation on the planet and permacultures template for survival and abundance.
HOMER is a computer model that simplifies the task of evaluating design options for both off-grid and grid-connected power systems for remote, stand-alone, and distributed generation (DG) applications. HOMER’s optimization and sensitivity analysis algorithms allow you to evaluate the economic and technical feasibility of a large number of technology options and to account for variation in technology costs and energy resource availability. HOMER models both conventional and renewable energy technologies:
• solar photovoltaic (PV)
• wind turbine
• run-of-river hydro power
• generator: diesel, gasoline, biogas, alternative and custom fuels, cofired
• electric utility grid
• fuel cell
• battery bank
• daily profiles with seasonal variation
• deferrable (water pumping, refrigeration)
• thermal (space heating, crop drying)
• efficiency measures
You can download and use HOMER for free.
The DailyGreen writes…
“Learn the basics of solar panels, inverters, installers, siting, financing and more. Harvest your own clean energy from the Sun.
The following guide will help you start exploring the possibility of going solar at your house. Let’s first get up to speed on solar electricity basics with a few key definitions:
PV Module: aka a solar panel, converts energy from the sun into direct current (DC) energy. PV Modules come in varying wattages and sizes. Typical PV modules used on home installations are 200 watts and about 14 square feet.
PV Array: A number of PV modules wired together. Using 5 x 200 watt PV modules creates a 1,000 watt PV array. Typical array sizes range from 2,000 to 5,000 watts and up.
Inverter: Converts DC electricity into alternating current (AC) electricity used around the house. A 3,000 watt inverter will output 3,000 watts of AC electricity given enough PV input. Typical inverter sizes range from 2,000 watts to 7,000 watts…”
“John Rudgard was leading a stressful life in the hospitality sector, working unholy hours at the office when his wife, Stephanie, sent him on a course — Permaculture for Busy People. It changed their lives. Now they lead a more sustainable existence, raising animals and growing food, and make a living teaching others how to follow in their footsteps, from their house, Rifleman Cottage, in Kent… ”