Why Solar
Solar is the fastest-growing source of electricity generation in the United States, adding more new capacity to the grid than any other technology in recent years. Its appeal is structural: sunlight is free, abundant, and delivered to every state, so once a system is built there is no fuel cost and no exposure to volatile commodity prices.
Solar is also uniquely modular. The same photovoltaic cell technology scales from a few panels on a rooftop to gigawatt-class farms spanning thousands of acres. That flexibility lets solar serve homeowners, commercial buildings, industrial loads, and utility transmission systems alike — and it pairs naturally with battery storage to shift midday generation into the evening and peak demand hours when the sun has set.
Onshoring the Solar Supply Chain
The strategic vulnerability in American solar is not the resource — it is the supply chain. Today most of the world's polysilicon, ingots, wafers, cells, and finished modules are manufactured overseas, with a heavy concentration in China. A panel installed in the U.S. may use American sunlight, but its components often crossed multiple oceans before reaching the field.
True solar energy security means rebuilding the full value chain domestically:
- Polysilicon: high-purity silicon refined from quartz, the foundational feedstock
- Ingots & wafers: polysilicon crystallized and sliced into the substrate for cells
- Cells: wafers processed into light-converting photovoltaic devices
- Modules: cells assembled, laminated, and framed into deployable panels
- Inverters & trackers: the power electronics and mounting systems that turn DC sunlight into grid-ready AC power
Manufacturing incentives: The Inflation Reduction Act's Section 45X Advanced Manufacturing Production Credit pays per-unit credits across the solar stack — polysilicon, wafers, cells, modules, inverters, and torque tubes — making domestic production cost-competitive and anchoring a fully American solar supply chain.
The Minerals Behind Solar
Solar manufacturing is mineral-intensive. The core of every panel is silicon (refined into polysilicon), while silver forms the conductive paste that collects current from each cell. Module frames, racking, and wiring depend on aluminum and copper, and when solar is paired with batteries, storage minerals such as lithium, nickel, and graphite enter the picture as well. Securing each of these inputs is part of the same national resource strategy — explore the full set of critical minerals.
Solar + Storage
Solar's one inherent limit is timing: it generates when the sun shines, not necessarily when demand is highest. The answer is firming with batteries. A co-located storage system charges from excess midday generation and discharges into the evening peak, transforming variable solar into a dispatchable, around-the-clock resource. This is where renewable generation meets advanced cell technology, and where battery storage turns sunlight into firm capacity.
Cheapest firm capacity: In sunny regions, solar-plus-storage now delivers the lowest-cost new firm capacity available — undercutting new gas peakers on a levelized basis while producing zero emissions and zero fuel-price risk.
Co-location advantage: The Salton Sea region and the broader American Southwest combine some of the nation's best solar resource with vast lithium-rich geothermal brine — making it a prime site to co-locate solar generation, battery storage, and domestic lithium production on a single footprint.