Ideas and sketches for a diy hillside energy storage system

I started with a number of guidelines in terms of what to consider and came up with probably a similar list to what I imagine many of you are already aiming for.

Summarized in the following are loose goals and hard limits (among others):

As cheap as possible or free, which includes

• Can't require extremely technical/ unavailable skills
• Can't require more time/ intense labor than a typical small family can supply
• Prefer using scrap/ waste, or reuseables

Fastidiously avoid

• Adding to pollution, or continuing to use polluting materials in a way where they are still seeping, offgassing, or otherwise not being contained or remediated
• Minimizing the impact of harvesting any natural materials

Please check out my sketches/ notes, below. i'd love to hear your thoughts. I'll be providing cleaner illustrations, typed notes, etc, soon, so sorry about the current sloppiness! (thanks for stopping by!)