Solyx develops hybrid solar-plus-storage projects in the markets that need firm, dispatchable clean power most — high prices, tight evening capacity, and strong policy support. Our lead project is in Southern California, with a second in early development in Northern Texas.
California · hybrid solar + long-duration storage
The San Diego County project pairs 140 MW of utility-scale solar with 600 MWh of long-duration battery storage on a high-irradiance parcel in San Diego County — inside the San Diego Local Capacity Area, where the grid is short on in-basin evening capacity and ratepayers carry the highest electricity bills in the continental United States.
California is legally bound to 100% carbon-free electricity by 2045, and it already runs roughly two-thirds clean. Hitting the remaining targets means adding exactly what the San Diego County project delivers — solar paired with storage. Pick a year: the power mix on the left, the legal target on the right, and how California measured up.
California electricity generation by source
2025 · California generation
Sources: 2010 — U.S. EIA; 2020 — CEC Total System Power Mix; 2025 — EIA full-year average; 2030/2045 — modeled SB 100 targets.
The target that year
33% renewables by 2020
—
The result →
And California can't do it alone today: the state imported about 29% of its electricity in 2023 — more than any other state. In-basin generation like the San Diego County project reduces that dependence and strengthens local reliability.
Drag across 30 years. SDG&E's residential rate has pulled away from California's average — itself far above the U.S. — and now runs well over twice the national rate. High, rising, structurally sticky prices are the backdrop a fixed-cost, local, clean project relieves.
A fixed-price, local PPA looks like a bargain against three decades of relentless rate increases — and a region this expensive is a motivated buyer for every megawatt-hour the project produces.
Average residential electricity price · cents per kWh
SDG&E vs. California vs. U.S. average, 1996–2025
Sources: U.S. EIA (CA & U.S. residential, Form EIA-861/861M); SDG&E rate history. Older SDG&E years estimated above the CA average.
Midday solar is so abundant it pushes net load into a deep "belly" — then the sun sets, demand peaks, and the grid scrambles for tens of gigawatts in a few hours. More solar alone makes it worse. The fix is banking cheap midday energy and discharging it into the evening peak. Toggle "with storage" to see the ramp flatten.
CAISO net load over 24 hours
Loading recent CAISO day · gigawatts
Net load = demand − solar − wind. Pulls a real recent CAISO day from the EIA; falls back to a representative day offline.
Storage charges on cheap midday solar, then discharges into the 4–9 PM peak — shaving the ramp and displacing the gas "peaker" plants that set San Diego's prices.
In April 2024, batteries became California's single largest source of evening-peak supply for the first time ever.
The result → the grid's scarcest, most valuable product is dispatchable capacity from 4–9 PM. That's exactly what the San Diego County project is built to sell.
Press play. The San Diego County project banks midday solar in its 600 MWh battery, then delivers 100 MW precisely into the 4–9 PM window — the exact capacity the San Diego area is short, in-basin, replacing imported power. The gauge tracks the energy moving through the day.
Time of day
5:00PM
Solar output
0MW
Battery
0MW
State of charge
0%
Press play to run the day. The shaded 4–9 PM band is the money window.
The result → the project sells the grid's most valuable hours — earning Resource Adequacy and peak time-of-day value under a contracted PPA.
San Diego County — modeled clear-day dispatch
Megawatts · 140 MW solar + 100 MW / 600 MWh battery
Illustrative dispatch using project specs (335 GWh/yr, 100 MW / 600 MWh battery). Real shape varies by day and season.
ERCOT · hybrid solar + storage · details to be announced
Solyx is in early development on a second hybrid project in Northern Texas. Full project details — capacity, site, offtake, and timeline — will be published here. The case for building in ERCOT is already clear: it is the fastest-growing grid in the country, and the fastest-growing storage market in the world.
This section will be populated with the Northern Texas project's specifications and milestones.
ERCOT went from almost no batteries to roughly 14 GW of operational storage entering 2026, alongside ~27 GW of solar and rising. An energy-only market with extreme price volatility and surging demand makes Texas one of the most attractive places in the world to build hybrid solar-plus-storage.
The result → a deep, liquid market where firm, fast-dispatching clean capacity is rewarded — the ideal setting for a Solyx hybrid system.
ERCOT operational battery storage capacity
Gigawatts · 2020 → entering 2026
Sources: ERCOT; Modo Energy buildout reports; IEEFA. 2026 figure is operational capacity entering the year.
For offtake, community partnership, land, or investment conversations on any project in the Solyx pipeline.
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